46results about How to "Stable idle" patented technology

The invention discloses a method and system for controlling the idle speeds of an engine. The method includes the steps that when an accelerator pedal is completely released, current parameter data for reflecting whole-vehicle practical operation conditions are obtained; the basic idle speed corresponding to the current temperature of water of the engine and a current altitude correction coefficient is obtained to serve as the first basic idle speed; the rotating speed needed by the engine at the current temperature of oil of a gearbox is obtained, and the larger value between the first basic idle speed and the rotating speed required by the engine serves as the second basic idle speed; the third basic idle speed, the fourth basic idle speed and the target idle speed are sequentially determined according to the conditions whether a vehicle is in the first-type experiment working condition or not, whether steering operation exists or not and whether the current vehicle speed is zero or not. By means of the method and system, the lowest rotating speed capable of reliably maintaining running of the engine under the whole-vehicle practical operation condition can be determined through the current parameter data to serve as the current target idle speed for outputting, and the problem that the idle speed is excessively high or excessively low can be further solved.

The invention provides a control system for an electric driver-training car. The control system comprises a single-chip microcomputer, a motor driving circuit, a motor rotating-speed measuring circuit, an idle speed adjusting circuit, an electronic accelerator pedal, a brake switch, a neutral gear switch and an ignition switch, wherein the motor driving circuit, the motor rotating-speed measuring circuit, the idle speed adjusting circuit, the electronic accelerator pedal, the brake switch, the neutral gear switch and the ignition switch are connected with the single-chip microcomputer respectively. According to the operation intention of a driver and corresponding sensor signals during operation, the control system for the electric driver-training car analyzes and calculates input signals, simulates the operating condition of a fuel car and controls output of driving signals so as to control the motor rotating speed to meet the operation requirements of the electric driver-training car and keep the working stability of the electric driver-training car. The system has the characteristics of simple hardware structure, stable and reliable data acquisition, high signal timeliness, freedom from lags and the like, a motor can be effectively, stably and quickly controlled conveniently, and the driving feeling of a fuel driver-training car can be realized.

The present invention discloses a digital ignition control method of miniature carburetor gasoline engine and its device. Said method and device can control ignition angle when the engine is being invarious running conditions, specially can regulate ignition angle according to the difference value of the true running idle rotating speed and target idle rotating speed, when the difference value is positive value, the ignition angle can be reliatively reduced, when the difference value is negative value, the ignition angle can be relatively increased, after the control process is passed through a part of time, the rotating speed of the engine can be fluctuated around some average rotating speed, said average rotating speed is the target rotating speed.

To permit easy and adequate setting of a gain in an internal combustion engine (hereinafter be called an “engine”) for the surer stabilization of an idle speed, the present invention provides a device for controlling an air volume during an idle operation of the engine. This device is provided with a first estimation unit for estimating a current output torque correlation value corresponding to a present intake-air volume of the engine; a second estimation unit for estimating an output torque correlation value correction amount corresponding to a difference between a current engine speed and a target engine speed of the engine; a third estimation unit for estimating a target output torque correlation value based on the correlation value and the correction amount; and a control unit for controlling an intake-air-volume adjusting system of the engine to achieve an intake-air volume which is equivalent to the target output torque correlation value.

The invention discloses a method and device for controlling the idling speed of an engine and belongs to the field of automobile electronic control. The method for controlling the idling speed of the engine comprises the steps that a starting request of an electrical load is received; the electrical load is controlled to work, an idling speed ignition angle of the engine is adjusted to be optimal when the electrical load works, the air input of a throttle valve is adjusted so that the actual rotating speed of the engine can be improved, and adjustment of the air input of the throttle valve is stopped when the actual rotating speed of the engine is equal to a first target idling speed; a stopping request of the electrical load is received; the electrical load is controlled to stop working, the idling speed ignition angle of the engine is adjusted to be optimal, the air input of the throttle valve is reduced so that the actual rotating speed of the engine can be lowered, reduction of the air input of the throttle valve is stopped when the actual rotating speed of the engine is equal to a second target idling speed, and the second target idling speed is lower than or equal to the first target idling speed. By the adoption of the method and device for controlling the idling speed of the engine, the oil combustion efficiency can be kept highest when the engine is at the idling speed, and oil consumption is reduced.

A method for adjusting a lookup table that includes preset on-time values for an injector of an engine linked to fuel injection quantity values (δ). The following steps are executed in a situation when the output shaft of the engine is disconnected from the output shaft of the gearbox. A torque loss value (T_loss) and a combustion efficiency value (ε_F) are determined or received. An actual fuel injection quantity value (δ_actual) is calculated, based on the torque loss value and the combustion efficiency value. An on-time value (tg) linked to the actual fuel injection quantity value is determined from the lookup table and the on-time value is compared with a presently applied on-time value (tb) that is established by an engine control with the aid of a regulator and the lookup table. The lookup table is adjusted based on the result of the comparison.

The invention relates to a double check valve integrated device applicable to an automobile fuel vaporization system. The double check valve integrated device comprises a venturi body, a Venturi structure is formed in the venturi body, a main valve plate is arranged in a main connection end at the top of the Venturi body, a main end cover is connected to the main connection end to form a first check valve structure, an assistant valve plate is arranged in an assistant connection end at the side of the venturi body, an assistant end cover is connected to the assistant connection end to form a second check valve structure, and a main connector is arranged at the gas outlet end of the venturi body. Therefore, two check valves are integrated on one venturi, the number of parts in an EVAP system are decreased effectively, and the occupied space is also reduced; as the components are reduced on the whole, traditional steps of press fitting of pipes are reduced, and manufacturing and mountingin site are facilitated; each check valve can be designed as a structure of elbow and in an adjustable form, so that the requirements of pipe routing adjustment can be met; and various secondary andmain structures are available and can be selected according to pipeline types.

The invention discloses a diaphragm plate type idle speed control valve, comprising a valve body, wherein the valve body comprises a coil bag assembly component, and a valve base mounted in match with the coil bag assembly component; the coil bag assembly component comprises a coil bag assembly mounted in a matched manner, a sleeve, a piston assembly, a third pressure spring and an upper cover plate; the sleeve, the piston assembly, the third pressure spring and the upper cover plate are integrally riveted with the coil bag assembly; the valve body comprises a diaphragm plate component; the diaphragm plate component comprises a diaphragm plate assembly, a lower cover plate assembly, a second pressure spring and a transmission rod assembly; the diaphragm plate assembly and the lower cover plate assembly are mounted in the matched manner; the second pressure spring is arranged between the diaphragm plate assembly and the lower cover plate assembly; the diaphragm plate assembly comprises a lower pressing plate, a diaphragm plate and an upper pressing plate, which are mounted in the matched manner; and a vacuum chamber is formed between the diaphragm plate assembly and the coil bag assembly component. The diaphragm plate type idle speed control valve provided by the invention can accurately control the flow of air entering an engine according to vacuum variation caused by variation of a working condition of an idle speed of the engine, so that the idle speed of an automobile is table, the service life of the engine is prolonged, and the riding comfort degree of the automobile can be improved.

In an outboard marine drive, a primary partition made of elastomeric material is provided in a lower part of the extension case, and a drive shaft and an exhaust pipe are sealingly passed through the primary partition. Thereby, the extension case is kept out of direct contact from the exhaust gas, and is therefore prevented from excessive heating. The exhaust pipe and the drive shaft typically have a large length, and it is advantageous to support them at parts thereof near a lower end thereof. The use of elastomeric material for the primary partition is particularly advantageous because it not only can favorably insulate heat but also can accommodate any positional errors in the exhaust pipe and the drive shaft relative to the extension case. When a secondary opening is formed in an upper part of the exhaust pipe to prevent excessive build up of exhaust back pressure when the engine is idling, a secondary partition may also be provided in an upper part of the extension case.

The present invention discloses a gas engine which includes body and has burning chamber inside. The body is equipped with mixture gas intake and air outlet connected with burning chamber; the body also has initiator and ignition apparatus connected with inside crankshaft, ignitor connected with magnet motor, noise reducer connected with air outlet slit. Character of it is that body is equipped with controller which can reduce pressure of high-pressure gas, and fill the mixture gas intake with mixture gas of low-pressure gas and air; controller is equipped with startup enrichment-system of quickening engine start, idle speed controlling apparatus of adjusting engines idle speed, air control shutter controlling apparatus of adjusting engine power. Gas engine of the present invention can be started by idle speed quick startup with advantages of operations convenient, quick startup, stable idle speed and good acceleration.

The invention relates to the technical field of automatic gearboxes, in particular to a clutch control method, an automatic gearbox control unit and an automobile, wherein the clutch control method isapplied to the automatic gearbox control unit. The clutch control method comprises the following steps that the rotating speed of a gearbox input shaft and the rotating speed of an engine are obtained, the difference between the rotating speed of the gearbox input shaft and the rotating speed of the engine is calculated, and when the difference is greater than a preset value, an oil pressure reduction command is issued to a clutch in an automatic gearbox. Both the automatic gearbox control unit and the automobile adopt the clutch control method, and according to the clutch control method, theautomatic gearbox control unit and the automobile, engine emissions and the fuel cost are lowered.

The invention discloses an ethanol stainless steel vehicle-used oil tank with a theftproof lock, and relates to an ethanol stainless steel vehicle-used oil tank with a theftproof lock. The ethanol stainless steel vehicle-used oil tank comprises a stainless steel tank; a theftproof lock device is mechanically connected with a closed oil tank cover, a stainless steel plate is pressed and welded into a tank body; the tank body and a stainless steel oil filling pipe are welded; the stainless steel oil filling pipe is mechanically connected with a stainless steel extension pipe; the oil filling pipe is mechanically connected with the closed oil tank cover; the bottom of the stainless steel extension pipe is mechanically connected with a filter screen; the tank body is mechanically connected with a stainless steel oil discharge plug; the tank body is welded with a stainless steel clapboard; the upper part of the tank body is provided with an ethanol gasoline meter sensor which is mechanically connected with an oil delivery pipe; and the oil delivery pipe is mechanically connected with a filter strengthening gasoline filter. The mechanical connection of the theftproof lock and the closed oil tank cover ensures that an undesirable person can not steal the oil easily to get benefit, and the ethanol stainless steel vehicle-used oil tank is widely applied to vehicles using ethanol gasoline.

The invention discloses a novel fuel oil catalyst. The novel fuel oil catalyst comprises a tank body, wherein an oil pipe is arranged in the tank body, and a rare earth material is filled in the tankbody. According to the novel fuel oil catalyst, the structural arrangement is ingenious, and the arrangement is reasonable; by adopting a separation technology, fuel oil does not make contact with therare earth material and directly passes through the oil pipe, the fuel oil enters the oil pipe in the tank body through a first oil pipe joint, the rare earth material which is located in the part, outside the oil pipe, of the interior of the tank body can generate infrared light, electricity and magnetic waves to catalyzing the fuel oil in the oil pipe, so that the fuel oil molecules undergo fission and are changed into a semi-liquid state from a liquid state; and the fuel oil subjected to catalysis is output through another oil pipe joint, and the combustion efficiency of the fuel oil is improved. Such fuel oil can be fully combusted in a combustion chamber, and therefore the engine power is improved, the starting speed is high, the fuel oil is saved, the tail gas emission is reduced, the carbon deposit is cleared, the engine noise is reduced, the service life of the engine is prolonged, the idling speed is more stable, the climbing is more powerful, and meanwhile, the phenomenon that the blocking of an engine nozzle caused by the technology adopting an oil-economizing bead can damage the engine can be effectively avoided.

The invention provides a special outer ring for motorcycle idling speed control valve, which includes a valve body, an air intake pipe is fixedly installed at the air inlet on one side of the valve body, a connecting pipe is fixedly installed on one side of the air inlet pipe, and a connecting pipe is arranged inside the connecting pipe. Ring, both sides of the outer surface of the ring are provided with hinges, one side of the hinge is hinged with a connecting plate, both sides of the intake pipe are threaded with threaded rods through the threaded holes opened, and one end of the threaded rod extends to The inside of the connecting pipe is welded with the outer surface of the connecting plate, and one end of the threaded rod extends to the outer surface of the intake pipe and is fixedly installed with a circular plate. The special outer ring for the motorcycle idle speed control valve, by setting the ring, the hinge and the connecting plate to cooperate with the threaded rod, so that the connecting plate can rotate around the hinge point, so that it can control the flow of air entering the valve body, so that the valve body It can be adapted to different motorcycles for idling, thereby making it more stable when idling.