44results about "Non-electrical control" patented technology

In an engine starting control system of an internal combustion engine in which an eco-run control is performed, a combustion stroke that each cylinder reaches when the internal combustion engine comes to an engine stopped state by the eco-run control is predicted, and in an expansion stroke cylinder that the predicted combustion stroke is an expansion stroke, fuel of a predetermined amount is injected from an intake passage injection valve into an intake passage just before the internal combustion engine comes to an engine stopped state, and in the expansion stroke cylinder, an engine start of the internal combustion engine in an engine stopped state is performed by injecting fuel from the cylinder injection valve into the cylinder and igniting the air-fuel mixture in the cylinder by an ignition plug.

Dual fuel compression ignition engines and methods that allow compression ignition on gaseous fuels like compressed natural gas, hydrogen and ammonia, yet will run on liquid fuels, including diesel fuels for such purposes as starting or when the gaseous fuel is not available or has been consumed and greater range or operating time is needed. Ignition of fuels having a high self ignition temperature is assured by recirculating high temperature exhaust gas back into the intake charge before compression. Existing engines may be converted to run as a dual fuel engine by replacement of the engine head or heads. Various embodiments are disclosed.

A speed governor is used with an engine having a crankshaft and a balancer shaft arranged substantially in parallel to the crankshaft, in which a drive gear provided in the crankshaft and a driven gear provided in the balancer shaft are meshed with each other so as to transmit mechanical power. The speed governor includes a plurality of flyweights pivotally supported on the driven gear of the balancer shaft by the plurality of support pins. The driven gear has a recess portion on an end surface thereof, and the support pins supporting the flyweights are arranged in the recess portion. Each of the support pins has two ends in a longitudinal direction and through holes are respectively located at the ends of the support pins.

The disclosure relates to an engine assembly, and an internal combustion engine assembly for a motor vehicle is provided. The engine assembly comprising: an engine; an electric motor; and a balance shaft comprising an eccentric mass, wherein the electric motor is configured to selectively rotate the balance shaft in order to balance a vibration characteristic of the engine. A method of operating the engine assembly is also provided.

Methods and systems are provided for an engine. The internal combustion engine has a plurality of cylinders that utilize oil for lubrication purposes. In one embodiment, a system includes a high speed diesel engine having cylinders in banks, each cylinder having at least one port, and a controller configured to operate the engine in at least two modes, with at least one mode being a port heating mode. The controller is configured to vary the port heating mode based on at least one of a function of time, engine age, and a measured or calculated megawatt hours of the engine, so that the variation decreases for the port heating mode, based on one or more of: frequency of port heating events, duration of a port heating event, target temperature of a port heating event, and amount of fuel used by at least one of the cylinders during a port heating event.

ethods and systems are provided for adjusting engine operation of a hybrid vehicle to increase power output, and fuel efficiency. In one example, a method may include operating the engine using an Atkinson cycle during a lower than threshold engine torque demand, and a lower than threshold battery state of charge, and operating the engine using an Otto cycle during a higher than threshold torque demand. During operating in the Otto cycle, an octane booster may be injected to the fuel line to increase the octane level in the fuel.

In an exemplary embodiment, an internal combustion engine, in which a valve is opened and closed when a piston reciprocates in a cylinder, has a configuration to perform repeatedly the following combined strokes: an intake stroke→a compression stroke→a combustion stroke→an exhaust stroke in a four-cycle internal combustion engine are combined with an intake and compression stroke→a combustion and exhaust stroke in a two-cycle internal combustion engine. The internal combustion engine can reduce pumping loss in a six-cycle internal combustion engine and increase the output.

The invention discloses a control method for piston motion track of a free piston engine, and belongs to the technical field of control. The invention aims to provide the control method for the piston motion track of the free piston engine, and the control method establishes a free piston internal combustion engine generator mechanism model system under an MATLAB environment according to the working mechanism of the free piston internal combustion engine generator, can effectively compensate interferences and keeps stable operation of the free piston internal combustion engine generator. The control method comprises the following steps of: establishing a free piston electric generator simulation model; controlling piston track of the free piston electric generator; enabling track of the piston to trace reference track, wherein the reference track is that a FPEG works under load needed for a driver; establishing a control-oriented model; designing a quadric-form secondary optimal controller; expanding design of a state observer; and performing uncertainty compensation. According to the control method disclosed by the invention, a control-oriented simplified model of the system is established, a piston motion control method based on linear quadratic type (LRQ) and extended state observer (ESO) is disclosed, and piston motion track of EPEG is controlled by regulating circulating oil spray amount.

The invention provides a control method and system for a multi-stroke circulation gasoline engine and a vehicle. The control method comprises the steps that if the engine is a multi-stroke circulation direct-injection gasoline engine, gasoline fuel is provided for a combustion chamber from the end section of an induction stroke and / or a compression stroke to the front section of an expansion stroke in a current multi-stroke circulation mode; ignition time is determined according to finishing temperature, a mixed gas average air-fuel ratio, a gasoline fuel injection amount around a compression upper dead center and injection timing, and ignition is performed at the ignition time; if the engine is a multi-stroke circulation port injection gasoline engine, the gasoline fuel is provided for a port at the induction stroke and / or an exhaust stroke in the current multi-stroke circulation mode; and ignition timing is determined during a period from the end section of the compression stroke to the front section the expansion stroke, and ignition is performed at the ignition timing. By adopting the method, fuel economy of the engine in multiple operation conditions can be effectively improved; and emission of tail gas pollutants is lowered.

An internal combustion engine (1) and corresponding method, cylinder, closing plate, cylinder and kit of parts, in particular a two-stroke engine, preferably a diesel two stroke engine, which comprises at least one piston (10) arranged in a cylinder (11). Said piston (10) and said cylinder (11) define a variable combustion chamber (101) and a variable second chamber (102). The variable combustion chamber (101) is fluidly connectable to the compressor side of a turbocharger (2,2') via at least one inlet opening (111) and to the turbine side of the turbo charger (2,2') via an exhaust opening (112). The second chamber (102) is fluidly connectable to the compressor side of the turbocharger (2,2') to introduce a compressed air flow into the second chamber (102). The compressed air flow is interruptible such that the second chamber (102) is disconnected from the turbocharger (2, 2') and the second chamber (102) comprises an outlet opening (113) for reducing a pressure of the second chamber (102). The outlet opening (113) preferably comprises a controllable chamber valve.

The invention relates to the technical field of automobiles, in particular to a method for preventing engine cylinder scoring. According to the method for preventing engine cylinder scoring, whether an engine fails or not is judged by measuring performance parameters of the engine; when it is judged that the engine fails according to the performance parameters of the engine, the output torque of the engine is limited first; and after the output torque of the engine is reduced, when the abnormal situation of the engine is still not improved or eliminated, the engine is directly turned off. According to the method, the situation that the gas inlet temperature, water temperature and lubrication situations of the engine become abnormal within a short period of time due to burst problems such as intercooler and throttle valve blockage, fan faults and engine oil leakage is considered, and it is effectively avoided that cylinder scoring happens when this type of situations happen to the engine.