66 results about "Wide open throttle" patented technology

An electronically controlled electrical power generator comprises a generator (15) driven by a heat engine (11), operated by control means (19), and carrying an electrical load (22). Operation of the heat engine (11) is at wide open throttle. Control over engine operation and electrical output of the generator (15) is achieved by electronically manipulating the electric load (22), and/or adjusting excitation levels at the generator's magnetic fields, so as to change engine/generator equilibrium speed. In a beneficial embodiment, the generator (15) is powered by an energy storage unit (21), to temporarily act as a motor and rotate the engine (11) when starting, and during power absorbing strokes. A method for controlling an unthrottled engine (11) including varying the gear ratio of a transmission connected between the mechanical output of the engine (11) and a mechanical load (22), to provide a torque load to the engine (11) to cause the engine (11) to move to an equilibrium speed at which its power output substantially meets a power output requirement. In a second embodiment, variance in the impedance of an AC generator (15) connected to the engine (11) provide a torque load to the engine (11) to control its equilibrium speed.

In a power output apparatus of the present invention, a control unit sets a WOT (wide open throttle) line L2, where the maximum torque of an engine attains, as a boundary between an over drive area and an under drive area in the case where a rotor shaft of an assist motor is set in a state of over drive linkage. The control unit determines a target working point of an outer rotor shaft of a clutch motor, which functions as a drive shaft, based on an externally required output, and selects the WOT line L2 as a performance line of the engine in the case where the target working point of the outer rotor shaft is present in the under drive area. The control unit then sets a switching instruction flag, in order to change the state of linkage of the rotor shaft of the assist motor from the state of over drive linkage to a state of under drive linkage. This arrangement of the invention reduces the maximum load capacity of the assist motor and decreases the maximum electric current of an inverter circuit for driving the assist motor.

An electronically controlled electrical power generator comprises a generator driven by a heat engine, operated by control means, and carrying an electrical load. Operation of the heat engine is at wide open throttle. Control over engine operation and electrical output of the generator is achieved by electronically manipulating the electric load, and/or adjusting excitation levels at the generator's magnetic fields, so as to change engine/generator equilibrium speed. In a beneficial embodiment, the generator is powered by an energy storage unit, to temporarily act as a motor and rotate the engine when starting, and during power absorbing strokes.

A carburetor including a frame having a first air/fuel channel and a second air channel; and a throttle valve assembly connected to the frame and having two valve sections. Each valve section is located in a respective one of the channels. A second one of the valve sections has an air bleed hole therethrough. The second valve section is movable relative to the frame from a first idle position to a second intermediate closed position and then to a third open position at a wide open throttle (WOT). The air bleed hole allows flow through the second channel at the first idle position, but does not allow flow through the second channel when the second valve section is at the second intermediate closed position.

The invention discloses a diesel engine air inlet and outlet control system. The diesel engine air inlet and outlet control system comprises an exhaust gas recirculation (EGR) valve, a variable geometry turbocharger (VGT) and a throttle valve to adjust the mass air flow (MAF) flowing into an engine. The engine control system comprises a first module and a second module, wherein the first module is a working condition state monitoring module based on position signals of an accelerator pedal and is used for judging whether the engine is in an urgent acceleration condition or not, the second module is used for adopting a transient open-loop control strategy under the urgent acceleration condition or an EGR valve, VGT and throttle valve cooperative control strategy with the difference of the MAF target value and the measured value as the control input according to the judgment result of the working condition of the first module, wherein the transient open-loop control strategy can improve the air inlet system reaction speed and optimize the transient smoke exhausting, and according to the EGR valve, VGT and throttle valve cooperative control strategy, the EGR valve is taken as the principal thing, VGT flow area adjusting is taken as the secondary thing, throttle valve control is taken as the auxiliary thing, and an MAF is accurately controlled. By means of the method, the complete opening state of the throttle valve can be kept as much as possible, the throttling loss can be reduced, and the purposes of improving the fuel economy and reducing standardized workloads are achieved.

A method to control the full-behavior air-fuel ratio of the bimodal bursting petrol motor adopts different air-fuel ratio under the different combustion modes to control combustion: under the firing mode, the triple effect catalytic converter uses the theoretical air-fuel ratio to reduce the emission. Under the compression-ignition mode, use the lean-burn with the throttle fully opening to improve the fuel economy. In the transition zone of the two combustion modes, the throttle jaw opening is kept and the air-fuel ratio of the firing mode is little higher than the theoretical value. The laminar lean-burn is realized matching the injection strategies. The gas mixture under the compression-ignition mode is stronger than that under the firing mode with the same throttle jaw opening. The air-fuel ratio is closes to the theoretical value. This method can combine the advantages of the two combustion modes, avoid defects and realize stable combustion in the full-behavior range. Especially during the mode transmitting process, it can simplify the control strategies, improve the smoothness and avoid the abnormal combustion phenomenon of knocking and losing fire during this process.

A piston 10, a spring operatively coupled to a piston, the spring being inside 21 or outside 41 the piston, and if the spring is inside the piston, the diameter of the spring is equal to 0.7 to 0.9, and if it is outside of the piston it is an external coil spring which is outside the cylinder which contains the piston and is able to provide a force of thousands of pounds per inch, and furthermore so that at light load the compression ratio (CR) is greater than 13 to 1 designated as CR0, at medium load has a compression ratio less then CR0 but greater than CReff, and at wide open throttle (WOT) has a CR equal to Creff, the CR is less than CR0 as would occur at medium or higher load which would lead to a flexing of the spring, and the cycle on the compression stroke is known as the HCX cycle where the pressure goes between Ppre and less than or equal to Pf.

The invention relates to a hydrogen-doped inlet air and oxygen-enriched gasoline engine with EGR and a combustion control method. The device mainly comprises a gasoline engine, an EGR cooler, an EGR valve, a water electrolysis device, a hydrogen storage, an oxygen storage, a pressure control device, a hydrogen injection device and an oxygen injection device. According to the hydrogen-doped inlet air and oxygen-enriched gasoline engine, in-cylinder combustion modes of four air inlet modes including inlet air doped with hydrogen and oxygen, small-scale exhaust gas recirculation and hydrogen doping, large-scale exhaust gas recirculation and hydrogen doping and oxygen enrichment are respectively adopted in a cold start and idling condition, a medium or small load condition, a large load condition and a full load condition of the engine, so that the effects that the thermal efficiency is obviously improved and the HC and CO discharge is reduced at the cold start and idling stage of the gasoline engine can be achieved; the pumping loss of the engine is greatly reduced in the medium or small load condition, and the oil consumption and NOx discharge are greatly reduced; the engine power is obviously increased within short time when a throttle valve is fully opened. The hydrogen-doped inlet air and oxygen-enriched gasoline engine has excellent overall properties such as low emission, low oil consumption and instantaneous high power output.

A hybrid power vehicle and an operation method thereof are provided. A disconnect clutch selectively separates an electric machine from a combustion engine. If a wide open throttle or high torque command is requested and the combustion engine is shut down, a 12 volt starter may be used to start the combustion engine while disconnected from the electric machine and all of the electric machine torque available may be used for traction.

A method and system to improve fuel economy of an engine on a vehicle is offered. An electronic throttle control device is commanded to a wide open throttle position during vehicle coast down, thus improving engine breathing and reducing pumping losses, and improving engine efficiency. This includes monitoring operator inputs to: an accelerator device, a braking device, and a cruise control device, and, monitoring throttle position control input from the electronic controller to the electronically controlled throttle mechanism. The electronically controlled throttle mechanism is commanded to a substantially wide-open throttle condition only when the monitored operator inputs to the accelerator device, the braking device, and the cruise control device are each at a null position. A further limitation on the wide-open throttle command includes monitoring other inputs from the electronic controller to the throttle mechanism.

A system for improving performance of a hybrid vehicle at higher elevations. The system includes a plurality of wheels, an engine, an altitude sensor, a transmission, a memory for storing target engine speeds, and a processor. The engine provides a torque to the plurality of wheels through the transmission, based on gear ratios limited by a wide open throttle (WOT) guard. The altitude sensor determines an elevation of the vehicle. Above a certain threshold elevation, the processor changes the WOT guard to improve performance at lower gears, such as standing start performance.

The invention relates to the technical field of fuel cell air compressor control, in particular to a fuel cell system and a control method thereof. The system comprises a fuel cell stack, an air compressor, a controller and a throttle valve arranged on an air outlet pipeline of the fuel cell stack, wherein the air compressor supplies air into the fuel cell stack through the air supply pipeline; the output end of the controller is connected with the air compressor and the throttle valve, the input end of the controller collects a corresponding signal, when a fuel cell is started, the throttle valve is controlled to be fully opened, the air compressor is started at a first set rotating speed, and when the fuel cell is required to be started for blowing, the rotating speed of the air compressor is adjusted to be a second set rotating speed after first set time; when the fuel cell is shut down, if the controller determines that blowing shut-down is needed, the throttle valve is controlledto be fully opened, and the rotating speed of the air compressor is adjusted to be a first set rotating speed value after first set time, so that the matching of the rotating speed and the back pressure of the air compressor in the starting and shutting stages is ensured, and the problem of surge of the air compressor in the starting and shutting stages is solved.

The invention discloses a control system of an electronic throttle valve of an exhaust gas turbocharged engine. The control system of the electronic throttle valve of the exhaust gas turbocharged engine is characterized by comprising a throttle valve controller, the throttle valve controller has a throttle valve normal control mode, a throttle valve full-open control mode and a throttle valve anti-overshoot control mode, wherein the effective area of the throttle valve is the effective area of a target throttle valve under the throttle valve normal control mode; the effective area of the throttle valve is the maximum opening area of the target throttle valve under the throttle valve full-opening control mode, and the change rate of the effective area of the target throttle valve is the maximum change rate allowed by the throttle valve when the throttle valve is fully opened; and the effective area of the throttle valve is the corrected value of the effective area of the target throttlevalve under the throttle valve anti-overshoot control mode. According to the control system and method of the electronic throttle valve of the exhaust gas turbocharged engine, the stability of the target air inlet pressure in an air inlet system is ensured, so that the stability of the dynamic property of a vehicle is ensured.