Class / Patent application number | Description | Number of patent applications / Date published |
073114130 | Power output | 17 |
20080276697 | Apparatus for Identifying a Non-Uniform Share of Cylinder Power in an Internal Combustion Piston Engine System - The invention utilizes the firing order of the cylinders within the engine to identify the cylinder or cylinders that mainly contribute or, alternatively, contribute as little as possible to the production of certain harmonic frequencies in the engine's torque. In order to use the engine's torque for this purpose, the calculation of torque must take into account the non-linearities of the engine system. Thus the calculation of torque takes into account not only the properties of the engine but also the properties of the load and the shaft. | 11-13-2008 |
20090314069 | METHOD AND APPARATUS FOR ESTIMATING ENGINE POWER - A method is present for estimating engine load factor. Temperature data is obtained from a temperature sensor in a location with respect to an exhaust system for an engine. A rate of temperature change is estimated using the temperature data. A steady state temperature at a selected time is calculated for the location using the temperature data and the rate of temperature change. The engine load factor at the selected time is estimated from the steady state temperature. | 12-24-2009 |
20130068002 | METHOD AND SYSTEM FOR SIMULATING VARIOUS ENGINE OPERATING CONDITIONS TO EVALUATE ENGINE EMISSIONS TEST EQUIPMENT - A system according to the principles of the present disclosure includes an engine control module, a valve control module, and a level determination module. The engine control module controls an engine mounted in one of an engine dynamometer and a chassis dynamometer based on a predetermined schedule specifying a desired speed with respect to time. The valve control module controls a valve to inject a first quantity of a substance into an exhaust system to simulate the engine outputting an emission. The level determination module determines an emissions level of the emission in the exhaust system based on the predetermined schedule and the first quantity. | 03-21-2013 |
20140230530 | DIAGNOSTICS METHOD AND SYSTEM FOR A POWER PLANT HAVING TWO STAGED TURBOCOMPRESSORS - A diagnostics method and system for a power plant including at least one low-pressure turbocompressor and at least one high-pressure turbocompressor, the turbocompressors being staged and supplying an internal combustion engine, the power plant being fitted to a motor vehicle. The method includes determining a mode of operation of the power plant, determining a power of the high-pressure turbine based on a first set of data and based on the mode of operation, determining the power of the high-pressure turbine based on a second set of data, determining a failure criterion as being the ratio between the power of the high-pressure turbine dependent on the first set of data and the power of the high-pressure turbine dependent on the second set of data, and comparing the failure criterion against stored values to determine whether there is a failure. | 08-21-2014 |
073114140 | As horsepower | 1 |
20080295586 | Fuel Tracking System - An apparatus for real-time monitoring of fuel consumption of a vehicle is provided. The apparatus includes a fuel sensor in operative communication with a data tracker for logging set increments. The fuel consumption information is sent to a remote communication device that is in communication with the data tracker, and then the fuel consumption information is sent to a remote monitoring network, where reports detailing fuel consumption are generated. The fuel consumption data provides a user with information about hourly fuel usage, average horse power, operator performance, the location where each increment of fuel is consumed, excessive idle times or breaks in production, and differences in fuel consumption rates for different operators, shifts and jobs. | 12-04-2008 |
073114150 | As torque | 12 |
20090025467 | Abnormality detection apparatus and abnormality detection method for internal combustion engine - A crankshaft of an engine is connected to a carrier shaft of a planetary gear via a damper. The damper includes a torsion member generating elastic force for suppressing relative rotation, when the crankshaft and the carrier shaft are relatively rotated. A control unit estimates engine torque with using rotation angular acceleration of the crankshaft calculated from a detected value of an engine speed sensor, and corrects the estimated engine torque with a correction term of the elastic force of the damper calculated based on a damper torsional angle. Then, the control unit diagnoses an abnormality of the engine based on the estimated engine torque after correction. | 01-29-2009 |
20090100919 | Engine Measurement Device - An engine measurement device includes a detector for measuring individual pieces of time series data containing at least a speed and output torque of an engine in a transient state while the engine is being run in combustion by control of an engine control unit, a torque operation unit for calculating the engine torque on the basis of the time series data of the engine speed and the output torque, and a model operation unit for modeling the engine torque as functions of the engine speed and a fuel injection time. This model is used to calculate both a fuel torque generated by the combustion run of the engine and a mechanical loss torque or the difference between the engine torque and the fuel torque. | 04-23-2009 |
20090100920 | TORQUE ESTIMATION DEVICE FOR INTERNAL COMBUSTION ENGINE - An internal combustion engine torque estimation device that accurately estimates the torque of an internal combustion engine without being affected by engine speed changes. A reference signal, which is output at predetermined rotation angle intervals of a crankshaft for the engine, is acquired. In accordance with the reference signal, the amount of change in the rotation speed of the crankshaft is acquired as a rotational fluctuation. A filtering process is performed on the rotational fluctuation in synchronism with reference signal output timing to extract a frequency component synchronized with a combustion cycle of the engine. The torque of the engine is estimated in accordance with the extracted frequency component. | 04-23-2009 |
20090107225 | CYLINDER CHARACTERISTIC VARIATION SENSING DEVICE - A cylinder characteristic variation sensing device has a small injection controlling section that performs small injections sequentially in respective cylinders, a torque increase amount sensing section that senses an increase amount of output torque caused in connection with the small injection for each cylinder, an injection quantity sensing section that senses an actual injection quantity of the small injection for each cylinder, and a cylinder characteristic variation calculating section that calculates a variation in a cylinder characteristic among the cylinders (i.e., a cylinder characteristic variation) based on a variation in the sensing value of the injection quantity sensing section among the cylinders (i.e., an injection quantity variation) and a variation in the sensing value of the torque increase amount sensing section among the cylinders (i.e. a torque increase amount variation). | 04-30-2009 |
20090282903 | ANGULAR VELOCITY/ANGULAR ACCELERATION CALCULATOR, TORQUE ESTIMATOR, AND COMBUSTION STATE ESTIMATOR - An angular velocity/angular acceleration calculator of the crankshaft in an internal combustion engine includes a crank angle detection device, a crank angle correction device, and an angular velocity/angular acceleration calculation device. The crank angle detection device detects a crank angle in the internal combustion engine and a time at the crank angle. The crank angle correction device corrects the crank angle and the time thus detected to an equiangular crank angle and a time corresponding thereto. The angular velocity/angular acceleration calculation device calculates an angular velocity and an angular acceleration of the crankshaft by converting a function of the time with respect to the crank angle that are corrected by the crank angle correction device so as to be regarded as a periodic function, and utilizing the discrete Fourier transform of the converted function. | 11-19-2009 |
20110174065 | METHOD FOR DETERMINING THE POWER OF AN INTERNAL COMBUSTION ENGINE - The power of internal combustion engines is conventionally determined on special power-test stands on which all connections, in particular coolant connections, of the engine must be fitted. In particular, if a cold test of the internal combustion engine is carried out beforehand, it is necessary for said internal combustion engine to be dismounted from the cold-test stand and mounted on the power-test stand, which is time-consuming. The invention indirectly predetermines the power of the internal combustion engine during the cold test. In this way, the determination of the power can be carried out on the cold-test stand without the need for a power-test stand or for the internal combustion engine to be mounted thereon. | 07-21-2011 |
20130333455 | Method For Monitoring The State Of A Piezoelectric Injector Of A Fuel Injection System - A method is disclosed for monitoring the state of a piezoelectric injector of the fuel injection system of an internal combustion engine, the piezoelectric injector having a piezoelectric actuator and a nozzle needle that can be moved by said piezoelectric actuator. The piezoelectric injector can be operated in a partial-stroke mode and a full-stroke mode. In the partial-stroke mode, the curve of an electrical parameter over time is recorded, the maximum value of the curve is determined, a constant parameter value that arises after the presence of the maximum value is determined, the duration between the presence of the maximum value and the reaching of the constant parameter value is determined, the difference between the maximum value and the constant parameter value is determined, and conclusions about the state of the piezoelectric injector are drawn on the basis of the determined duration and the determined difference. | 12-19-2013 |
20150121998 | SYSTEM AND METHOD FOR AN AUTOMOTIVE ENGINE TORQUE SENSOR - The disclosure relates to a method and apparatus of measuring torque. The method and apparatus entails measuring the torque generated by an automobile engine using a torque sensor replacing the driver side engine mount. A spring component of the torque sensor tares the weight of the engine and a hydraulic pressure gauge measures the lifting forces acting on a pressure receiver of the torque sensor. | 05-07-2015 |
20150316445 | STANDARD ENGINE COLD TEST SYSTEM AND METHOD - A standard engine cold test method includes instructing, by a control device, a tester to perform an engine test. The tester drives a motor with a standard mode or a general mode according to a control of the control device to operate an engine which is a test object. The tester measures engine information depending on an operation of the engine using a sensor. A gathering device gathers the measured engine information. The gathered engine information is analyzed to determine abnormality of the engine. | 11-05-2015 |
20160018287 | TORQUE ERROR DETECTION AND TORQUE ESTIMATION SYSTEM - A vehicle may include a powertrain having an engine and a generator coupled to a driveshaft, an inverter configured to provide phase currents to the generator, and a controller programmed to output a fault condition based on first and second generator torques, the first generator torque being based on an engine torque and the second generator torque being based on no more than two phase currents of the generator. | 01-21-2016 |
20160025594 | METHOD TO MEASURE FRICTION LOSS IN ENGINES AND METHOD TO DETECT ENGINE DRIVING STATE - The angular deceleration dω/dt of an output shaft after switching from a driving state, in which an engine is driven by burning fuel that is supplied by a fuel supplying device into an engine cylinder space, to a measuring state, in which deceleration is caused by suppressing the combustion of fuel in the engine cylinder space, is measured, and a friction loss in the engine is determined on the basis of the measured friction torque Tf of the engine determined by Expression Tf=It×dω/dt), where It is the moment of inertia for the entire drive system of the engine, and the friction torque correction quantity corresponding to a work correction quantity performed by post-combustion dripping generated in the engine cylinder space after switching from the driving state to the measuring state. | 01-28-2016 |
20160069759 | INERTIA MOMENTUM MEASUREMENT METHOD FOR ENGINE AND FRICTION LOSS MEASUREMENT METHOD FOR ENGINE - An inertia momentum measurement method for an engine, the method including: a first step for measuring a deceleration dωe | 03-10-2016 |