101results about How to "Reduce fuel injection" patented technology

A system for controlling fuel injection in an engine. The engine includes an intake passage, an intake passage injector, a cylinder having a combustion chamber, and a cylinder injector for injecting a target amount of fuel into the combustion chamber. The system includes a controller for controlling the intake passage and cylinder injectors to permit fuel injection, each with an injection ratio, while said engine operates in a condition in which said engine permits fuel injection from said cylinder injector, a sensor for sensing the amount of fuel injected from the cylinder injector, a detector for detecting the difference between the target injection amount and the amount of fuel injected and an adjustor for adjusting the injection ratio based on the result of the detection by the detector so that the intake passage injector performs fuel injection together with the fuel injection performed by the cylinder injector.

A drive control circuit supplies power to a solenoid coil in an in-cylinder injector of a cylinder in response to a fuel injection signal. A failure detection circuit to detect disconnection failure at an in-cylinder injector is arranged to be shared among cylinders whose phase of each stroke differs 360 degrees in crank angle. An engine ECU detects failure including identification of the injector with disconnection failure based on a failure detection signal from the failure detection circuit, and a crank angle detected by a crank angle sensor. The driver is notified of the failure detection result through the engine ECU.

To provide a fuel injection control apparatus capable of reducing the minimum quantity of fuel injection without reducing the maximum quantity of injection.

For fuel injector valve opening, a driving circuit 56 supplies an electric current from a high-voltage power supply VH to the fuel injector 53, then after valve opening, switches the high-voltage power supply VH to a low-voltage power supply LV, and retains the open state of the valve. A microcomputer 57 is adapted such that for opening the valve of the fuel injector, the microcomputer, after supplying the current from the high-voltage power supply to the injector 53, discharges the current rapidly for a decrease below a first current level Ihold1 at which the open state of the valve cannot be retained, and then controls the supply current to the injector 53 so as to supply a current of a second current level Ihold2 at which the open state of the valve can be retained.

A fuel injection valve coupled to a common rail is provided. When fuel injection is carried out, the fuel pressure in the fuel injection valve pulsates. An interval between a pilot injection and a main injection is set so that the main injection is carried out at a zero gradient timing as a timing when the gradient of the fuel pressure in the fuel injection valve after the pilot injection is approximately equal to zero. Owing to a fuel injection control apparatus and a fuel injection control method for an internal combustion engine that perform the above-mentioned control, the fuel injection amount for the subsequent fuel injection following the preceding fuel injection can be reliably held equal to a normal amount.

A method for controlling a first and second injector of an engine, the first injector located in a first cylinder of the engine and the second injector located upstream of, and configured to inject fuel into, the first and a second cylinder of the engine, the method comprising of decreasing total injection from the first and second injectors when decreasing injection from the second injector, and increasing total injection from the first and second injectors when increasing injection of the second injector.

The invention discloses a control method for preventing regeneration and sintering of a particle catcher. The method comprises the following steps: acquiring regeneration related parameters of the particle catcher, wherein the regeneration related parameters comprise inlet temperature of an oxidation catalyst, outlet temperature of the oxidation catalyst, outlet temperature of the particle catcher, pressure difference of the particle catcher and air speed of the oxidation catalyst; increasing or decreasing the fuel injection quantity required by regeneration of the particle catcher according to the acquired regeneration related parameters; and injecting fuel according to the adjusted fuel injection quantity. The invention further discloses a control device for preventing regeneration and sintering of the particle catcher.

Disclosed herein is a fuel injection control apparatus for an internal combustion engine, capable of opening and closing accurately a valve of the fuel injector even when the quantity of injection required is small and a pulse duration of a driving pulse signal to the fuel injector is short.

A fuel injector pulse width computing unit 9a calculates, from the operational state of the internal combustion engine and the fuel pressure detected by a fuel pressure sensor, pulse width of a pulse signal which drives the valve of the fuel injector. After an valve-opening command has turned on and a high valve-opening current for opening the fuel injector valve has been supplied from a high-voltage source to the fuel injector, a fuel injector driving signal waveform command unit 9b discharges the current and supplies from a low-voltage source a small hold current Ih2 that allows the fuel injector to maintain the valve-open state. Also, during the time from supply of the valve-opening current to an arrival at the value of the hold current Ih2, after the elapse of a previously assigned rapid-discharge starting time Tsy from the turn-on of the valve-opening command, the fuel injector driving signal waveform command unit 9b rapidly discharges the current until the hold current Ih2 has been reached.

The present invention relates to a fuel nozzle capable of implementing multiple injection. It belongs to an injection device of fuel combustion system of internal combustion engine. Said fuel nozzle is characterized by that the lower end portion of needle valve of said fuel nozzle is equipped with a circumferential ring groove and on the internal cylindrical surface of said needle valve body a fuel guide groove is set. Said invention also provides the working principle of saod fuel nozzle, it can make the combustion of engine fuel and complete, and can improve noise and starting performance of internal combustion engine. Said fuel nozzle also can be used in direct injection ignited engine.

Disclosed are a method and a control system adapted to making it possible to use, or prolong a use of, a higher transmission mode in a vehicle. The control system comprises a simulation unit configured for simulating at least one future speed profile for an actual speed for the vehicle along a section of road ahead of the vehicle, which simulation is conducted at a time when the section of road is still ahead of the vehicle, and is based on information related to a gradient of the section of road. The system further comprises an evaluation unit configured for evaluating whether a raising of an actual speed for the vehicle is appropriate to achieving the making possible or prolongation, which evaluation is based on the simulation of at least one future speed profile, and a use unit configured for using the evaluation during control of the actual speed.

Disclosed is a dual clutch transmission wherein, during a pre-shifting operation wherein, when a vehicle is driven using either a first or a second drive force transmission path extending from first and second input shafts (12, 13) to an output shaft (14), a synchronizer (S1, S2) of the other drive force transmission path is operated, the drive force of an internal combustion engine (E) is changed by a command from an electronic control unit (U), and accordingly, even when a drive force or a braking force is generated by inertia, due to a change in the number of rotations of the first and second input shafts (12, 13) in conjunction with the pre-shifting operation, the drive force or the braking force generated by inertia can be compensated by a change in the drive force of the internal combustion engine (E), to reduce shift-shock. Furthermore, the shift-shock can be reduced by only changing the drive force of the internal combustion engine (E) without adding any special structures to the dual clutch transmission (T), and accordingly, the cost and size of the dual clutch transmission (T) can be prevented from increasing.

The invention discloses a cooling water high-temperature protection system of a gasoline engine and a control method thereof. The cooling water high-temperature protection system comprises an engine management system, a cooling water temperature sensor, a vehicle speed sensor, an air inlet temperature sensor and an air pressure sensor, wherein the signal output ends of the cooling water temperature sensor, the vehicle speed sensor, the air inlet temperature sensor and the air pressure sensor are respectively connected with the engine management system, and the signal output end of the engine management system is respectively connected with the execution ends of an air conditioner control system, a thermostat, a cooling fan, a radiator and an electric control injection and ignition system through control units. According to the cooling water high-temperature protection system, when the temperature of cooling water is high, heat can be dissipated to the maximum, and the heat of an engineis reduced, so that the cooling water is quickly cooled, the engine system can be protected in time before an alarm is given, hidden danger of an oil supply system and an ignition system is reduced,and metamorphic engine oil and detonation are avoided.

A sub out-orifice and an in-orifice are respectively formed in a low pressure passage and a high pressure passage of a fixed plate. A control valve is provided at an outlet port of the low pressure passage. In a normal control, the control valve starts its control-valve opening operation when a movable plate is in contact with the fixed plate. In an interval-shortening control, the control valve starts the control-valve opening operation at an earlier timing than that in the normal control, namely during a course in which a valve body is still in its valve-body closing operation.

Methods and systems are provided for control of a combustion engine in a vehicle. In operation, at least one future speed profile for an actual speed of the vehicle is simulated during a road section ahead based on information about the road section and on knowledge that coasting with the combustion engine shut down will be applied during the road section. Subsequently, based on the future speed profile, a starting point in time is determined, when the combustion engine will need to be started for forward driving the vehicle and/or to brake the vehicle. Subsequently, a starting point brought forward in time is determined based on the need for a forward driving or braking force arising, where the starting point brought forward in time precedes the starting point in time. Subsequently, the combustion engine is controlled to be started at the starting point brought forward in time.

The invention is concerned with a kind of xiangmijuan food and its derivative and these produce method, and the associated expanding and soft roller machine and multi-function heating and warm revolving pan. The xiangmijuan food and its derivative take corn as main material and they fit for corn, and the foods of grain, wheat and amylum. The xiangmijuan food and its derivative are expanding and loosen shape with multi-hole and multi-clearance, its outer roll is a kind of hollow and long cylinder in round roll shape. The inner roll is regular, shapely, expanding and loosening, and there are netlike small eyelets or small clearances on the body of roll equably in color with golden yellowness. The whole roll body is sweet and crisp, the outer roll is the warping layer with flavor stuff adhering to the surface of inner roll tightly in 3 mm thickness. It has pure color for different tastes and obvious individuation.

The invention relates to the technical field of automobile electronics, specifically to a method and a device for cleaning up carbon deposited in an automobile engine, wherein the device comprises a sensor, a controller and a pulse generator, wherein the controller is composed of a power circuit, a signal input circuit, a processor and a signal output interface, wherein the signal input circuit, the processor and the signal output interface are orderly connected; the pulse generator is composed of a condition indicator, a pulse circuit and a signal output circuit, wherein the pulse circuit and the signal output circuit are connected with each other; the sensor is connected with the signal input circuit of the controller; and the pulse generator is connected with the signal output interface of the controller. The method and the device provided by the invention can transmit a pulse signal timely according to an operation condition of the engine so as to clean up original deposited carbon of the engine, prevent newly deposited carbon from being generated, ensure a combustion condition is optimal under various conditions, and improve overall performance of entire automobile.

The invention discloses a high-efficiency internal-combustion engine. The engine comprises a cylinder body, an air inlet device, a fuel injection device and a piston, wherein the air inlet device and the fuel injection device, which are communicated with a cavity of the cylinder body, are arranged on the cylinder body; and the piston does reciprocating motion in the cylinder body. The high-efficiency internal-combustion engine is characterized by also at least comprising a water injection device and a control device; the water injection device can atomize water and import the atomized water into the cavity of the cylinder body; and the control device controls the open and close of the water injection device, adjusts the water injection quantity, and controls the water injection device to spray the atomized water when the piston does inhaling movement. By adopting the measure of spraying the atomized water to a combustion chamber for cooling, the high-efficiency internal-combustion engine can effectively prevent the early deflagration, the compression ratio of the engine is increased and the atomized water is increased, so the power output of the engine is improved.

The invention relates to a power consumption control method of a vehicle air conditioning; wherein, the dynamic load change for the running of a vehicle air conditioning system is transferred to an engine management system ECU by a pressure sensor; the engine management system ECU corrects the air inlet amount of the engine and reduces the oil spray amount according to the load change of the air conditioning system, thereby achieving the goal of precisely controlling the output power of the engine and an air-fuel ratio.