| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 123064000 | SIX-CYCLE | 18 |
| 20090235881 | Six-cycle internal combustion engine - Described is a six-cycle internal combustion engine. Four of the cycles are the standard “Otto” cycles, namely intake, compression, power and exhaust plus two additional cycles, a primary intake cycle and a transfer cycle. The two additional cycles act as a supercharger to provide compressed air to the intake port of the “Otto” cycle. The benefit is reduced fuel consumption due to 1 power stroke per every 3 | 09-24-2009 |
| 20090277403 | Variable-coordination-timing type self-cooling engine - The present invention provides a variable-coordination-timing type self-cooling engine capable of adjusting the initiation timings and the injected amount of each injection process according to the change in the combusting pressure with the variable-coordinate-timing system. | 11-12-2009 |
| 20090277404 | Active-threshold-control type self-cooling engine - The present invention provides an active-threshold control system for the self-cooling engine to improve the energy efficiency of the self-cooling-16-process. | 11-12-2009 |
| 20100050963 | 6-cycle engine with regenerator - In an attempt to regenerate energy of exhaust gas by using a pressure regenerator secured to an exhaust port of a displacement type engine so as to realize the Atkinson's cycle, if the engine is a four-cycle engine, raising regenerative pressure may cause abnormal fuel combustion or melting damage of an exhaust valve. The present invention has successfully solved this problem by using a six-cycle engine. The six-cycle engine with a regenerator according to the present invention is capable of varying proportion of the power output that is generated by the six-cycle engine itself and that is generated by the regenerator. Using this principle enables the six-cycle engine with a generator to be used as an engine that is capable of generating two kinds of output power or as a six-cycle gas turbine with high controllability. The invented internal combustion engine is excellent and valuable in the fuel cost economy when it is used as a motor for a power station and a small generator as well as a motor for a movable body such as a ship or a vehicle. The invented internal combustion engine is especially suitable for a movable body such as a hybrid-system vehicle. Incidentally, the inventor is ready for granting the rights for practicing the present invention. | 03-04-2010 |
| 20100083921 | Catalyst control for six-cycle engine - A six-cycle engine has the advantage for the capability of internal cooling with scavenging air. This advantage enables the compressive ratio to rise, thereby achieving lower fuel consumption. However, there has been a critical problem due to lowered temperature of the exhaust catalyst and excessive volume of oxygen contained therein caused by the mixing of the scavenging air with exhaust gas. To solve the problem of lowered temperature, the invention has thermally insulated the fuel combustion chamber and the exhausting system, and controlled the aperture degree of the scavenging port valve relatively to the suction valve to adjust the scavenging air volume against the suction air, thereby controlling temperature of the exhaust gas. Further, to solve the problem of excessive volume of oxygen, the invention has introduced an EGR (Exhaust Gas Recirculation) system to fully substitute the scavenging air with circulating exhaust gas and a self EGR system to open the exhaust valve during the scavenging air introduction stroke. The present invention has successfully made a naturally good fuel-efficient six-cycle internal combustion engine be suited one for practical use such as conventional vehicles. | 04-08-2010 |
| 20100095913 | SIX STROKE INTERNAL COMBUSTION ENGINE AND METHOD OF OPERATION - An internal combustion engine includes an arrangement of cylinders each having a reciprocating piston operatively linked to a crankshaft. The cycle for each cylinder includes an intake stroke, a compression stroke, a power stroke, an exhaust stroke, and two free strokes during which the exhaust valve or a separate clean air valve is left open. The power stroke of each cylinder fires simultaneously with the free stroke of another cylinder. The engine and method of operation provides a six stroke cycle for each power stroke to yield three revolutions of the crankshaft per cycle, thereby increasing fuel efficiency. | 04-22-2010 |
| 20100300385 | INTERNAL COMBUSTION ENGINE UTILIZING DUAL COMPRESSION AND DUAL EXPANSION PROCESSES - Engines and processes for their operation include a compressor cylinder, at least one power cylinder, and an expander cylinder. The outlet of the compressor cylinder is fed to the inlet of a power cylinder, and the outlet of the power cylinder is fed to the expander cylinder. The compressor cylinder and the expander cylinder are operated in two-stroke fashion, and the power cylinder is operated in four-stroke fashion, all of which cylinders share a common crankshaft. Heat may be recuperated from the exhaust gas and directed to the inlet gas of the power cylinder, increasing overall efficiency. | 12-02-2010 |
| 20100313831 | Highly Efficient 6-Stroke Engine Cycle With Water Injection - A six-stroke engine cycle having improved efficiency. Heat is recovered from the engine combustion gases by using a 6-stroke engine cycle in which combustion gases are partially vented proximate the bottom-dead-center position of the fourth stroke cycle, and water is injected proximate the top-dead-center position of the fourth stroke cycle. | 12-16-2010 |
| 20140158068 | Six-Stroke Engine System with Blowdown Exhaust System - A six-stroke engine system including an engine with a combustion chamber including an exhaust valve that expels exhaust gasses and a blowdown exhaust valve that expels blowdown exhaust gasses during recompression. An exhaust line communicates with the engine to direct exhaust gasses out of the combustion chamber, and a blowdown exhaust line communicates with the engine to direct blowdown exhaust gasses out of the combustion chamber and into the exhaust line. The blowdown exhaust gasses are expelled through the blowdown exhaust valve during the recompression stroke, and the exhaust gasses are expelled through the exhaust valve during the exhaust stroke. | 06-12-2014 |
| 20140158069 | Six-Stroke Engine System with Blowdown Turbocharger - A six-stroke engine system including an engine with a combustion chamber including an exhaust valve that expels exhaust gasses, a blowdown exhaust valve that expel blowdown exhaust gasses during recompression, and an intake valve and a blowdown compressor intake valve that introduce air. An exhaust line directs exhaust gasses to drive a turbine, which drives a compressor. An intake line receives compressed air from the compressor and directs it into the combustion chamber through the intake valve. A blowdown exhaust line, separate from the exhaust line, directs blowdown exhaust gasses from the blowdown exhaust valve to drive the blowdown turbine, which drives a blowdown compressor. A blowdown compressor line directs compressed air from the intake line into the blowdown compressor, and directs super-compressed air from the blowdown compressor through the blowdown compressor intake valve during recompression. | 06-12-2014 |
| 20140158070 | Six-Stroke Engine Power Density Matching System and Method - An engine combustion cylinder is fluidly connectable to an intake system through an intake valve and to an exhaust system through an exhaust valve. A valve activation system is to activate the intake valve and the exhaust valve. The valve activation system is responsive to a controller providing command signals to the valve activation system such that, when the engine operates in a six-stroke combustion cycle, the intake valve is opened during a recompression stroke to allow a portion of the products from the first combustion stroke to exit the combustion cylinder and enter into the intake system. This may be done to match the power densities of the first and second power strokes of the piston. | 06-12-2014 |
| 20140158071 | Six-Stroke Combustion Cycle Engine and Process - A fuel introduction system introduces fuel to an internal combustion engine operating on a six-stroke combustion cycle including a first compression stroke, a first power stroke, a second compression stroke, and a second power stroke. The fuel introduction system includes a first orifice set for introducing a first fuel charge to a combustion chamber of the engine during the first compression stroke and/or power stroke and a second orifice set for introducing a second fuel charge to the combustion chamber during the second compression stroke and/or power stroke. Combustion of the second fuel charge can assist in burning particulate matter left in the combustion chamber from combusting the first fuel charge. The first and second orifice sets can be configured to differentiate the first and second fuel charges by, for example, fuel quantity or spray pattern. | 06-12-2014 |
| 20140158072 | Six-Stroke Internal Combustion Engine Valve Activation System and Method for Operating Such Engine - An engine combustion cylinder is fluidly connectable to an intake system through an intake valve and to an exhaust system through an exhaust valve. A valve activation system is to activate the intake valve and the exhaust valve. The valve activation system is responsive to a controller providing command signals to the valve activation system such that, when the engine operates in a six-stroke combustion cycle, the intake valve is opened during a recompression stroke to allow a portion of the products from the first combustion stroke to exit the combustion cylinder and enter into the intake system. | 06-12-2014 |
| 20140326202 | Six Stroke Internal Combustion Engine and a Method of Operation - The present invention relates generally to an internal combustion engine and a method of operating the engine on a six stroke cycle, in which the fifth and sixth strokes cool the engine to improve efficiency and reduce emissions. | 11-06-2014 |
| 20140366819 | SIX-STROKE CYCLE ENGINE HAVING SCAVENGING STROKE - A six-stroke cycle engine includes an intake passage including a throttle valve, and an exhaust passage including a catalyst. The six-stroke cycle engine includes a scavenging passage including a first end defined by a scavenging port and a second other end connected to the intake passage upstream of the throttle valve. The six-stroke cycle engine includes an intake valve, an exhaust valve, a scavenging valve, and a valve gear configured to operate these valves. The valve gear closes the scavenging valve and operates the intake valve and the exhaust valve so as to execute an intake stroke, a compression stroke, an expansion stroke, and an exhaust stroke, in this order. The valve gear also operates only the scavenging valve so as to execute a scavenging intake stroke and a scavenging exhaust stroke, in this order, following the exhaust stroke. | 12-18-2014 |
| 20150040847 | SIX-STROKE CYCLE ENGINE HAVING SCAVENGING STROKE - A six-stroke cycle engine includes an intake passage including a downstream end connected to a combustion chamber and no throttle valve therein, and an exhaust passage including a catalyst and an upstream end connected to the combustion chamber. The six-stroke cycle engine includes a first valve configured to open and close the intake passage, a second valve configured to open and close the exhaust passage, a valve gear configured to operate the first valve and the second valve so that an intake stroke, a compression stroke, an expansion stroke, and an exhaust stroke are executed, in this order, and to operate only the first valve so that a scavenging intake stroke and a scavenging exhaust stroke are executed, in this order, following the exhaust stroke. The valve gear includes a variable valve mechanism configured to continuously change an opening and closing timing and a lift amount of the first valve. | 02-12-2015 |
| 20160032821 | Six Stroke Internal-Combustion Engine - A method for modification and improvement in internal combustion engine systems utilizing six strokes (1. an intake stroke, 2. a compression stroke, 3. a power stroke, 4. an exhaust stroke, 5. an intake-cooling stroke and 6. an exhaust-cooling stroke) and incorporating changes to the camshaft lobes and valve train timing providing for a 3:1 camshaft to crankshaft ratio allowing for higher revolutions per minute, lower idling speeds, reduced valve float and smoother operation. The system provides for more efficient fuel combustion during the power stroke, which extends past bottom dead center thus increasing power, fuel efficiency, and greatly reduces harmful emissions. The additional fifth and sixth strokes provide for intake and exhaust cooling. The system demonstrates increased reliability, efficiency, and a cooler operating environment while operating with various fuels. | 02-04-2016 |
| 20160169125 | SIX-STROKE ENGINE AND METHOD OF OPERATING SIX-STROKE ENGINE | 06-16-2016 |
