Class / Patent application number | Description | Number of patent applications / Date published |
123304000 | Injecting diverse fuels or different states of same fuel | 41 |
20080289599 | Controller for homogeneous charge compression ignition internal combustion engine - A HCCI engine ( | 11-27-2008 |
20080289600 | Controller for homogenous charge compression ignition internal combustion engine - A homogeneous charge compression ignition internal combustion engine (HCCI) ( | 11-27-2008 |
20090084349 | FUEL MANAGEMENT SYSTEM FOR VARIABLE ETHANOL OCTANE ENHANCEMENT OF GASOLINE ENGINES - Fuel management system for efficient operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder of the engine. A fuel management microprocessor system controls injection of the anti-knock agent so as to control knock and minimize that amount of the anti-knock agent that is used in a drive cycle. It is preferred that the anti-knock agent is ethanol. The use of ethanol can be further minimized by injection in a non-uniform manner within a cylinder. The ethanol injection suppresses knock so that higher compression ratio and/or engine downsizing from increased turbocharging or supercharging can be used to increase the efficiency of the engine. | 04-02-2009 |
20100175659 | FUEL MANAGEMENT SYSTEM FOR VARIABLE ETHANOL OCTANE ENHANCEMENT OF GASOLINE ENGINES - Fuel management system for efficient operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder of the engine. A fuel management microprocessor system controls injection of the anti-knock agent so as to control knock and minimize that amount of the anti-knock agent that is used in a drive cycle. It is preferred that the anti-knock agent is ethanol. The use of ethanol can be further minimized by injection in a non-uniform manner within a cylinder. The ethanol injection suppresses knock so that higher compression ratio and/or engine downsizing from increased turbocharging or supercharging can be used to increase the efficiency of the engine. | 07-15-2010 |
20100199948 | Concurrent Injection Of Liquid And Gaseous Fuels In An Engine - Disclosed is a method and corresponding fuel injector for injecting gaseous and liquid fuel into an engine. The method comprises delivering a liquid fuel to a fuel injector, delivering a pressurized gaseous fuel to the fuel injector, entraining the liquid fuel within the gaseous fuel within a chamber of the fuel injector and injecting the gaseous fuel and atomized liquid fuel into the combustion chamber. The liquid fuel can be passed through and dispensed from a needle into a chamber in the injector nozzle where it is entrained in the gaseous fuel during an injection event. The liquid/gas mass ratio is controlled by the needle movement, hydraulic resistances or electronic valves so that the majority of the liquid is injected during the first part of the gas injection. The injector can be used for late cycle direct injection of natural gas, or any number of gaseous fuel blends combined with many liquid fuels such as diesel, biodiesel and DME. | 08-12-2010 |
20100236518 | FUEL INJECTION CONTROL DURING START-UP - A method of operation of an internal combustion engine including an intake valve coupled to a combustion chamber, and a port fuel injector positioned upstream of the intake valve in an intake manifold including a throttle, the port fuel injector fluidly coupled to a fuel rail included in a fuel delivery system housing a fuel at least partially composed of alcohol. The method including, during a start-up operation when the temperature of the engine is below a threshold value and fuel is actively being injected into the intake manifold, adjusting a cone angle of a fuel spray from the port fuel injector, via adjustment of the throttle and/or fuel delivery system, based on the position of the intake valve. | 09-23-2010 |
20100294236 | Fuel-Based Injection Control - Systems and methods of operating an engine, the engine including an injector configured to directly inject fuel into an engine cylinder. One example method comprises, during an engine cold start, performing compression direct fuel injection, and retarding a timing of the compression injection as a fuel alcohol content of the fuel increases. | 11-25-2010 |
20110011369 | Arrangement and Method for an Internal Combustion Engine with Direct Dual Fuel Injection - An arrangement and a method for a combustion engine with direct injection and in particular for switching between two types of fuel. A high-pressure pump is connected to a combustion engine and the high-pressure rail for the direct injection of a fuel. At least two fuel storages containing petrol and liquefied gas are present. The arrangement allows for switching from one fuel to another. Switching occurs by purging a fuel from the high-pressure pump and the fuel supply line connected thereto by temporarily collecting the fuel in a purge unit. The purge unit is arranged for purging the high-pressure pump, thus forcing out the prevailing fuel and replacing it with the new fuel. | 01-20-2011 |
20110100323 | DIMETHYL ETHER (DME) ENHANCED GASOLINE ENGINE - An engine having DME pilot ignition is disclosed. DME Pilot ignition creates far more energy than a conventional spark plug, thus minimizes the possibility of misfire in the engine map. DME injection can be used in a number of ways. In one embodiment, DME injection replaces the conventional spark plug in an Otto cycle engine. In another embodiment, DME injection is used in addition to spark ignition to minimize the use of DME. In this embodiment, DME injection is only used during those portions of the engine map where misfire may occur, or during those times when a misfire sensor detects misfire. DME injection can also be used in conjunction with alcohol boosting in other embodiments. | 05-05-2011 |
20110209686 | LOW OCTANE FUEL FOR GASOLINE COMPRESSION IGNITION - The present invention provides an automotive fuel injection system for a compression ignition engine, comprising a fuel injector configured to receive a fuel having an octane rating between 87 and −30 and configured to meter the fuel into the compression ignition engine, and a heater coupled to the fuel injector and configured to heat the fuel injector such that the fuel is heated to a predetermined minimum temperature, whereby the ignition delay of the fuel is reduced below a predetermined maximum ignition delay. | 09-01-2011 |
20110253097 | Approach for Improved Fuel Vaporization in a Directly Injected Internal Combustion Engine - A system and a method of facilitating fuel vaporization in a directly injected internal combustion engine are provided. As one example, the method comprises: closing an exhaust valve of the cylinder; opening an intake valve after the exhaust valve has closed; moving a piston of the cylinder away from top dead center between the closing of the exhaust valve and the opening of the intake valve to expand the cylinder volume and reduce a pressure within the cylinder to below a pressure of an air intake manifold of the cylinder; and initiating an injection of fuel directly into the cylinder via an in-cylinder injector after the exhaust valve has closed. | 10-20-2011 |
20120085317 | Method for Reducing Engine Emissions Using a Liquid Aerosol Catalyst - A catalyst composition and method of improving fuel efficiency and reduced emissions in combustion engines is disclosed. A liquid aerosol catalyst is introduced in to the air intake stream of a combustion engine and allowed to react during the oxidation of the fuel in the combustion chamber. The catalyst mixture contains platinum, rhenium, cerium, alcohol, and water. | 04-12-2012 |
20120097127 | Separate igniter fuel injection system - A separate igniter fuel injection system is described for use with diesel engines operating on tar based slurry fuel with a common rail slurry fuel injection system. The igniter fuel is injected prior to injection of the slurry fuel, during each engine compression stroke, so that the ignition and burning of the igniter fuel will supply hot gases for the evaporation and thermal cracking needed to ignite the tar fuel portions of the slurry. This separate igniter fuel injection system can also be used for cold startup of a diesel engine operated on tar based slurry fuels. | 04-26-2012 |
20120118263 | POSITIVE DISPLACEMENT RADICAL INJECTION SYSTEM - A system, comprising, a combustion chamber, and a free-radical ignition system configured to inject free radicals into the combustion chamber at an ignition timing to trigger combustion of a fuel-air mixture. | 05-17-2012 |
20120266843 | FUEL INJECTION APPARATUS FOR INTERNAL COMBUSTION ENGINE - A fuel injection apparatus for an internal combustion engine including a fuel injector having a leading end portion that has an internal space in which fuel is stored and an injection nozzle for injecting fuel; and an adsorbent disposed in the internal space, the adsorbent being capable of selectively adsorbing an alcohol component in a blended fuel of gasoline and alcohol. The adsorbent has a characteristic such that an amount of alcohol adsorption is small when a fuel pressure is low and large when the fuel pressure is high. Adsorption of alcohol onto, and desorption of alcohol from, the adsorbent can be controlled by changing the fuel pressure in the internal space. | 10-25-2012 |
20120285419 | Dual Fuel Injector Feed Using Differential Length Quills - A duel fuel quill assembly and method for assembling such an assembly for an engine are disclosed. The dual fuel quill assembly may comprise a cylinder head including a main bore and a receiving cavity, an outer quill tube, an inner quill tube nested within the outer quill tube, an adapter slidingly received inside the main bore of the cylinder head, and a manifold secured to the adapter. The adapter may be moveable between a first position and a second position and may define an axial bore configured to receive the outer quill tube and the nested inner quill tube. The manifold may define a recess configured to compress the outer and inner quill tubes against the cylinder head cavity when the adapter is in the second position. | 11-15-2012 |
20120298072 | Directly Injected Internal Combustion Engine System - An engine system for a vehicle, comprising of a combustion chamber, a first in-cylinder direct injector configured to deliver a first substance including at least gasoline directly to the combustion chamber at a first pressure; and a second in-cylinder direct injector configured to deliver a second substance including at least an alcohol directly to the combustion chamber at a second pressure less than the first pressure. | 11-29-2012 |
20130055987 | INTERNAL COMBUSTION RECIPROCATING PISTON ENGINE AND METHOD OF OPERATING THE SAME - Internal combustion reciprocating piston engine and method for operating an internal combustion reciprocating piston engine which works according to the Diesel process and has at least one cylinder ( | 03-07-2013 |
20130068193 | DUAL FUEL INJECTION VALVE APPARATUS INCLUDING A HYBRID NOZZLE FOR DIESEL AND GAS ENGINES - The present invention relates to a dual fuel injection valve apparatus provided with a hybrid nozzle for a diesel engine and a gas engine and an objective thereof is to provide a dual fuel injection valve apparatus provided with a hybrid nozzle for a diesel engine and a gas engine, being capable of respectively injecting two kinds of different fuels from one fuel injection valve by pressure of fuel and tension of a spring. | 03-21-2013 |
20130081593 | Single Actuator Fuel Injector for Dual Fuels - Fuel injectors are disclosed that are capable of simultaneously delivering liquid and gaseous fuels to the combustion chamber of a compression ignition engine. For example, fuel injectors are disclosed that can deliver liquid diesel fuel, as a pilot liquid, along with a gaseous fuel, such as natural gas or other available fuels that are gases at atmospheric pressure and ambient temperature. The fuels are delivered to the needle control valve cavity sequentially via separate passageways. The delivery of the pressurized liquid fuel is actuated by the single actuator that is provided for each fuel injector. The actuator may be of a solenoid type or of a piezoelectric type or other suitable actuator as will be apparent to those skilled in the art. A liquid fuel check valve, in combination with the actuator, controls the delivery of the pilot liquid fuel to the needle control valve cavity. | 04-04-2013 |
20130098332 | Multi-cylinder multi-fuel engine - This engine utilizes the power of cylinder(s) that use diesel fuel which provides great power at slow crankshaft rounds per minute speed. It also utilizes cylinder(s) that operate on dedicated alternant hydrocarbon fuel(s). The fuels do not mix. The diesel cylinder(s) burn only diesel fuel. The alternant hydrocarbon cylinder(s) burn only their assigned fuel. An example would be an engine that had one diesel cylinder and one cylinder that burned natural gas while using a single crankshaft. | 04-25-2013 |
20130118449 | SYSTEM AND METHOD FOR CIRCULATING FUEL THROUGH A DIRECT INJECTION PUMP OF A BI-FUEL ENGINE - A fuel supply system for supplying a bi-fuel engine with a first fuel type, e.g., gasoline, includes a cooling circuit. The cooling circuit circulates the first fuel type through a direct injection pump assembly to prevent the first fuel type from overheating within the direct injection pump assembly. | 05-16-2013 |
20130133616 | ENGINE UTILIZING A PLURALITY OF FUELS, AND A RELATED METHOD THEREOF - At least one donor cylinder is coupled to an intake manifold. The intake manifold is configured to feed a mixture of air and a first fuel, or a mixture of air, the first fuel, and a second fuel to the at least one donor cylinder. At least one non-donor cylinder is coupled to the intake manifold and an exhaust manifold. The intake manifold is further configured to feed air, or a mixture of air and the second fuel to the at least one non-donor cylinder. An exhaust channel extend from the at least one donor cylinder to the intake manifold for recirculating an exhaust emission from the at least one donor cylinder to the at least one donor, and non-donor cylinders via the intake manifold. | 05-30-2013 |
20140053800 | Dual Fuel System Diagnostics For Dual Fuel Engine And Machine Using Same - A machine includes a machine body and a dual fuel compression ignition engine attached to the machine body. A dual fuel system is operably coupled to supply the engine with liquid diesel fuel and natural gas fuel directly into respective cylinders of the engine. The fuel system includes an insulated tank for storing the natural gas fuel, a pressure sensor positioned to measure fluid pressure within the tank, and a pump for drawing the natural gas fuel from the tank. An electronic controller is in communication with the pressure sensor and has a cryogenic system diagnostics algorithm executable thereon that is configured to receive a pressure signal from the pressure sensor, detect a cryogenic system fault based on the signal, and generate a notification signal based on the fault. | 02-27-2014 |
20140102407 | INTEGRATED FUEL INJECTOR IGNITERS CONFIGURED TO INJECT MULTIPLE FUELS AND/OR COOLANTS AND ASSOCIATED METHODS OF USE AND MANUFACTURE - Embodiments of injectors configured for adaptively injecting multiple different fuels and coolants into a combustion chamber, and for igniting the different fuels, are disclosed herein. An injector according to one embodiment includes a body having a first end portion and a second end portion. The injector further includes a first flow channel extending through the body, and a second flow channel extending through the body that is separate from the first flow channel and electrically isolated from the first flow channel. The first flow channel is configured to receive a first fuel, and the second flow channel is configured to receive at least one of a second fuel and a coolant. The injector further comprises a valve carried by the body that is movable between a closed position and an open position to introduce at least one of the second fuel and the coolant into a combustion chamber. | 04-17-2014 |
20140202420 | ARRANGEMENT AND METHOD FOR AN INTERNAL COMBUSTION ENGINE WITH DIRECT DUAL FUEL INJECTION - An arrangement and method for a combustion engine with direct injection and in particular to switching between two types of fuel is disclosed. A high-pressure pump ( | 07-24-2014 |
20140311444 | Dual Fuel Common Rail Transient Pressure Control And Engine Using Same - A compression ignition engine is fueled from common rail fuel injectors that predominately inject natural gas fuel that is compression ignited with a small pilot injection of liquid diesel fuel. Before and after a rapid load loss transient, the liquid and gaseous rail pressures are controlled toward respective pressures based upon engine speed and load. During the transient, the liquid rail pressure is controlled relative to the gas rail pressure in order to maintain the liquid rail pressure greater than the gas pressure during the transient to avoid migration gaseous fuel into the liquid fuel side of the system. | 10-23-2014 |
20140311445 | METHOD OF SWITCHING FROM A LIQUEFIED GAS FUEL TO A LIQUID FUEL BEING PROVIDED TO A DIRECT INJECTION COMBUSTION ENGINE, AND DIRECT INJECTION BI-FUEL SYSTEM FOR SUCH AN ENGINE - A method of switching between liquefied gas fuel and liquid fuel consuming modes of a direct injection combustion engine including pumping liquefied gas fuel to a high pressure,pump for pumping the liquefied gas fuel to a high pressure rail of the engine during the liquefied gas fuel consuming mode, switching to the liquid fuel consuming mode, pumping the liquid fuel to the high pressure pump, flushing liquefied gas fuel via a return line between the high pressure pump and a fuel tank, controlling pump operation, controlling flow through the return line, and controlling the pressure of the fuels. | 10-23-2014 |
20140331962 | Dual Fuel Engine System And Engine System Operating Method - Operating a dual gaseous and liquid fuel engine includes injecting gaseous and liquid fuels directly into an engine cylinder, and compression igniting the liquid fuel to ignite the gaseous fuel therein. Data indicative of energy content of injected gaseous fuel and also energy content of gaseous fuel conveyed to compensate for depletion of gaseous fuel via injection is received, and a signal outputted indicative of an energy imbalance between the injected and conveyed gaseous fuel responsive to the data. Diagnostics are run in response to the signal. | 11-13-2014 |
20140331963 | Dual Fuel Common Rail Transient Pressure Control And Engine Using Same - A compression ignition engine is fueled from common rail fuel injectors that predominately inject natural gas fuel that is compression ignited with a small pilot injection of liquid diesel fuel. Before and after a rapid fueling increase transient, the liquid and gaseous rail pressures are controlled toward respective pressures based upon engine speed and load. During the transient, the liquid rail pressure is controlled toward an elevated liquid pressure in order to cause a surge in the supply of gaseous fuel to the gaseous fuel common rail to proactively satisfy the increased gaseous fuel injection rate while obviating a substantial pressure deficit in the gaseous fuel common rail. | 11-13-2014 |
20140331964 | Dual Fuel Engine Diagnostic System And Method Of Operating Same - A compression ignition engine is fueled from common rail fuel injectors that predominately inject natural gas fuel that is compression ignited with a small pilot injection of liquid diesel fuel. Prior to servicing the engine, a service tool may establish a communication link with an electronic controller that controls operation of the engine. Pressure information for a gaseous fuel common rail and a liquid fuel common rail are displayed with the service tool, when the engine is stopped, in order to determine whether the rails are completely depressurized indicating that it is then o.k. to perform servicing tasks. | 11-13-2014 |
20140331965 | POSITIVE DISPLACEMENT RADICAL INJECTION SYSTEM - A system, comprising, a combustion chamber, and a free-radical injector configured to inject free radicals into the combustion chamber at an ignition timing to trigger combustion of a fuel-air mixture. | 11-13-2014 |
20150059687 | METHOD FOR CONTROLLING FUEL PRESSURE FOR A LPG ENGINE - Methods and systems are provided for adjusting a phase of gaseous fuel delivered to fuel injectors of a fuel delivery system. In one example, a method may include adjusting a fuel pressure in a fuel delivery system to deliver fuel in each of a liquid and a gaseous phase during different engine operating conditions. The fuel pressure may be based on a temperature, composition, and desired phase of the fuel. | 03-05-2015 |
20150101566 | USAGE STRATEGY FOR MIXED GASOLINE AND CNG FUELED VEHICLES - A method for an engine, comprising: responsive to a pressure in a fuel tank being below a pressure threshold, injecting only a liquid fuel into an engine cylinder, the fuel tank storing the liquid fuel and a pressurized gaseous fuel partially dissolved in the liquid fuel. In this way, the pressurized gaseous fuel may be conserved, thus maintaining a pressure gradient within the fuel system and allowing for judicious use of the pressurized gaseous fuel, for example during cold start conditions. | 04-16-2015 |
20150107550 | METHOD FOR CONTROLLING AND REGULATING AN INTERNAL COMBUSTION ENGINE ACCORDING TO THE HCCI COMBUSTION METHOD - A method is proposed for controlling and regulating an internal combustion engine according to the HCCI combustion method, in which a first fuel in a basic mixture is ignited using a pilot fuel, and in which the fuel quantities of the first fuel and the pilot fuel are changed to represent an operating point of the internal combustion engine. The invention is characterized in that a target combustion energy (VE(SL)) is calculated as a function of a power demand and, based on the target combustion energy (VE(SL)), the fuel quantity of the first fuel and the fuel quantity of the pilot fuel are determined using a distribution factor (CHI), wherein the distribution factor (CHI) is calculated as a function of an actual combustion position (VL(IST)) to a target combustion position (VL(SL)) using a combustion position controller ( | 04-23-2015 |
20150122218 | CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE - An object of this invention is, in an internal combustion engine having of in-cylinder direct injection and port injection, to enable the early elimination of a difference between fuel concentrations of fuel injected from different injection valves that can arise when a mixing ratio of different kinds of fuel contained in the fuel that is used changes significantly. To achieve this, the control device of this invention normally controls a fuel injection amount of each injection valve in accordance with the operating state of the internal combustion engine, while a change arose in the mixing ratio of different kinds of fuel contained in the fuel that is used or while there is a possibility for such a change, the control device controls a fuel injection amount of each injection valve so that fuel is temporarily injected from both the in-cylinder injection valve and the port injection valve. | 05-07-2015 |
20150128902 | DUAL FUEL INJECTION SYSTEM - A method of controlling fuel injection in a dual fuel engine system includes determining, with a first controller, a diesel injection pulse indicative of a first amount of diesel fuel to be injected into a combustion chamber of the engine and a first timing at which the first amount of diesel fuel is to be injected. The method also includes determining, with a second controller, a combined injection pulse based on the diesel injection pulse. The method further includes injecting the second amount of diesel fuel and the third amount of natural gas into the combustion chamber in accordance with the combined injection pulse. In such a method, injection in accordance with the combined injection pulse results in a combustion event characterized by a second combustion characteristic substantially equal to a first combustion characteristic associated with the diesel injection pulse. | 05-14-2015 |
20150136073 | Dual Fuel Injector and Engine Using Same - A dual fuel injector may be used to inject both gas and liquid fuel into a cylinder of a compression ignition engine. An injector body defines a first set of nozzle outlets, a second set of nozzle outlets, a first fuel inlet and a second fuel inlet. A dual solenoid actuator includes a first armature, a first coil, a second armature and a second coil that share a common centerline. The dual solenoid actuator has a non-injection configuration at which the first armature is at an un-energized position and the second armature is at an un-energized position. The dual solenoid actuator has a first fuel injection configuration at which the first fuel inlet is fluidly connected to the first set of nozzle outlets, the first armature is at an energized position and the second armature is at the un-energized position. | 05-21-2015 |
20150361925 | Dual Fuel Common Rail Engine with Co-Axial Quill Assembly - A dual fuel common rail engine supplies pressurized natural gas and liquid diesel fuel at different pressures through a co-axial quill assembly for direct injection from a single fuel injector into an engine cylinder. Pressure waves in the gaseous fuel common rail are damped in a pressure damping chamber of the co-axial quill assembly to promote consistent gaseous fuel injection rates and quantities from the fuel injector. | 12-17-2015 |
20160010569 | Fuel System Protection In A Multi-Fuel Engine | 01-14-2016 |
20160040608 | Internal Combustion Engine Fuelling - This invention is concerned with improving the fuel efficiency of an engine. An engine or method of operating an engine that by introducing a secondary additive fuel or fuels in order to effect within the engine an extended combustion time and improve the ‘burn’ during the power stroke so as to ensure that fuel is utilised (burnt) as fully as possible thus improving the efficiency of the engine and bringing about a reduction of harmful exhaust emissions. | 02-11-2016 |