224 results about "Crankshaft position sensor" patented technology

A power pump performance analysis system includes a signal processor connected to pressure sensors for sensing pressures in the cylinder chambers and inlet and discharge piping of a single or multi-cylinder pump. Pump speed and piston position are determined by a crankshaft position sensor. Pump vibration, fluid temperatures, and power input may also be measured by sensors connected to the processor. Performance analyses, including determination of pump volumetric efficiency, mechanical efficiency, suction and discharge valve sealing delay, valve and piston seal leakage, flow induced pressure variations, acceleration induced pressure detection, hydraulic resonance detection and pulsation dampener performance may be measured and selected parameters displayed on a visual display connected to the processor directly or via a network.

The invention discloses a range extended electric vehicle control system, and relates to a whole vehicle control system. The range extended electric vehicle control system comprises an engine controlled by the conventional throttling valve, a generator which is integrally connected with a crank shaft of the engine and has functions of generating power and driving, a vehicle-mounted power battery, a whole vehicle controller, a range extender controller, a battery management system, a battery direct current sensor, an engine controller unit, a generator controller unit, a generator end direct current sensor and a permanent magnet synchronous driving motor, wherein the permanent magnet synchronous driving motor, the power battery and the generator are connected to a power line and used for driving wheels, a motor controller, a motor direct current sensor, the throttling valve and a crank shaft position sensor; the range extender controller communicates with the engine controller unit and the generator controller unit and sends a control instruction; and the range extender controller manages power generation energy and controls an auxiliary system according to a demand of a driver and a state of a range extender system. The invention also discloses a range extended electric vehicle control method. The range extended electric vehicle control system and the range extended electric vehicle control method can be used for electric automobiles.

An engine control apparatus is disclosed for determining crankshaft position and engine phase of an internal combustion engine (10) through monitoring intake air pressure fluctuations (120). The opening of the intake valve (44) is mechanically linked to the crankshaft position of an engine. When the intake valve (44) opens it creates air pressure fluctuations in the air induction system (14) of the engine (10). The control apparatus is configured to determine intake air pressure fluctuations indicative of an intake air event (100 to 110) and thus a particular crankshaft position, and their corresponding period of the engine cycle. The controller then uses this information to determine crankshaft speed and position for the purpose of fuel injection and ignition timing of the internal combustion engine. Engine phase is also determined on four-stroke engines. The engine may also include a crankshaft position sensor in combination with monitoring intake air pressure fluctuations to increase resolution in determination of crankshaft position.

The invention provides a work system of an electronically controlled gasoline engine, comprising an air intake system, a fuel oil supply system, an ignition system as well as an electronic control system; the electronic control system consists of a sensor section, an electronic control unit ECU and an actuator section, wherein, the sensor section includes a throttle position sensor, an intake pressure and temperature sensor and an intake temperature sensor which are arranged on an intake pipe of an intake system, a camshaft position sensor, a coolant temperature sensor and a crankshaft position sensor which are arranged on the engine, a front oxygen sensor arranged in front of a three-way catalyst converter on an exhaust pipe of the engine, and the components of the sensor section are all connected with the ECU, and the actuator section consists of an electric fuel pump, an oil sprayer, an idle speed regulating valve and an ignition coil; the components of the actuator section are all connected with the ECU, and the ECU includes a fuel injection control program, an ignition control program and an idle speed control program; the system adopts reasonable control strategy and has comprehensive control function, good integrated performance of control function and fine system portability.

The invention discloses an engine position management system. The engine position management system comprises a crankshaft signal panel, a crankshaft position sensor, a camshaft signal panel, a camshaft position sensor and an eTPU control unit, wherein the crankshaft signal panel comprises multiple convex teeth and tooth gaps; the tooth gaps have a large tooth gap for positioning; and the camshaft signal panel comprises three convex teeth with different central angles and tooth gaps. The eTPU control unit comprises a crankshaft signal processing module, a crankshaft fault diagnosis module, a camshaft signal processing module, a camshaft fault diagnosis module and a limp return and synchronous logic processing module. The engine position management system can use crankshaft signals and camshaft signals for realizing quick cylinder judgment and synchronization of an engine when the camshaft position sensor and the camshaft position sensor are normal, and can use another sensor for realizing the cylinder judgment synchronization and providing the angle information with limited precision to realize the limb return of the engine when one sensor is broken down. The invention further provides a management method of the engine position management system.

An engine control apparatus is disclosed for determining crankshaft position and engine phase of an internal combustion engine through monitoring intake air pressure fluctuations. The opening of the intake valve is mechanically linked to the crankshaft position of an engine. When the intake valve opens it creates air pressure fluctuations in the air induction system of the engine. The control apparatus is configured to determine intake air pressure fluctuations indicative of an intake air event and thus a particular crankshaft position, and their corresponding period of the engine cycle. The controller then uses this information to determine crankshaft speed and position for the purpose of fuel injection and ignition timing of the internal combustion engine. Engine phase is also determined on four-stroke engines. The engine may also include a crankshaft position sensor in combination with monitoring intake air pressure fluctuations to increase resolution in determination of crankshaft position. A circuit is provided for simultaneously measuring intake temperature using a single bridge type pressure sensor in order to calculate air mass flow rate.

The invention relates to mixed power electric automobile power assembly bench test device. Front, back, left, and right frames are formed bench according to the mounting means of engine, torque sensor, electric machine, gear box and the sensor fixing position at the crank shaft. Power assembly is set at the bench. Power measuring machine is connected with the power output end of the gear box. Torque sensor is set between the engine and the electric machine or power measuring machine. The connected power assembly, torque sensor, and power measuring machine are connected with each controller unit and related wiring harness to constructer CAN network, adjust system communicating, verify reliability and system function for engine, electric machine, battery, HCU multi energy sources controller, BMS battery management unit, MCU electric machine controller, EMS engine controller etc.

The invention discloses an engine variable valve timing system performance testboard, relating to an engine variable valve timing system performance test device. The invention aims to solve the problems of engine variable valve timing system performance detection and has simple structure, strong universality, easier installation and more accurate and reliable measured data. The invention has the technical scheme that the testboard comprises a cylinder cover. A cam shaft is arranged in the cylinder cover; the front end of the cam shaft is connected with a phase shifter and the rear end thereof is connected with a cam angle sensor; a valve assembly is arranged in the cylinder cover and actuates along with the rotation of the cam shaft; the cylinder cover is provided with an engine oil control valve; a drive motor drives a crankshaft sprocket through a transmission synchronous belt; the crankshaft sprocket drives the phase shifter through a chain; a crankshaft position sensor is arranged below the crankshaft sprocket; and hydraulic oil enters from the oil inlet arranged on the cylinder cover and flows out from the oil outlet. The invention is mainly applied to the performance test of an engine variable valve timing system.

The invention discloses a motorcycle engine electronic control fuel injection system, and comprises an electronic control unit, and a sensor and an executive mechanism connected with the electronic control unit; the sensor comprises a crankshaft position signal generator, a crankshaft position sensor and a throttle position sensor corresponding to the crankshaft position signal generator, an intake pressure sensor communicated with an air intake tube, an intake air temperature sensor communicated with the air intake tube, a cylinder body temperature sensor installed on the engine body, and an oxygen sensor arranged on an exhaust tube, wherein, the executive mechanism comprises an idle speed control valve, an electric fuel pump, a fuel pressure regulator, an oil ejector and an ignition coil. The invention has the advantages that the design is reasonable, the structure of the system is perfect, the operating performance is stable and reliable, and the engine combines the electronic control system with the exhaust gas aftertreatment technology, to lead the exhaust gas emission to meet the requirements of the motorcycle country more than three issues emission regulation as well as the more than Euro III exhaust emission regulation.

A control apparatus for an internal combustion engine includes a crankshaft, a camshaft for actuating an intake valve of the engine, a crank position sensor that outputs a crank signal every time the crankshaft rotates 10° of crank angle, an electric motor that is coupled to the camshaft, and an engine control computer that, based on the crank signal, controls the engine every time the crankshaft rotates 30° of crank angle. The motor includes a rotor and three rotation sensors. Each sensor outputs a signal corresponding to induced voltage generated by rotation of the rotor. The computer controls the rotating motor based on the signals from the rotation sensors. When the crank position sensor malfunctions, the computer controls the engine every time the crankshaft rotates 30° of crank angle based not on the crank signal but on a rotation pulse train generated based on the signals from the rotation sensors.

A water injection control system includes a control unit adapted to receive one or more of a plurality of sensor signals from sensors provided as standard equipment in a vehicle, and to provide one or more control signals configured to control the operation of a water injection system associated with an engine of the vehicle. The received sensor signals may include signals from sensors such as an O₂ sensor, an engine coolant temperature sensor, a mass air flow sensor, a manifold absolute pressure sensor, a crankshaft position sensor, a vehicle speed sensor, an intake air temperature sensor, and a throttle position sensor. The control signals provided by the controller may include signals for controlling functions such as water injector pulse rate and pulse width, water pump operation, water heater power, dashboard indicators, and PCU O₂ sensor input.

The invention discloses a system of engine position management. According to the system of the engine position management, an enhancement mode time processing unit (ETPU) is adopted to achieve rapid and synchronic fault-tolerance. According to a crank signal processing module, a jumping edge of a crank position signal detected by an input crank position sensor is collected for several times. According to a cram shaft signal processing module, electrical level and a jumping edge of a cram shaft position signal detected by an input cram shaft position sensor are collected for several times in a mixing mode. According to a synchronous logical processing module, a crank state quantity signal output by the crank signal processing module and a cram shaft state quantity signal output by the cram shaft signal processing module are processed and analyzed and a synchronous state quantity signal is output so that an engine state can be changed in real time and synchronism of a crank and a cram shaft is finally achieved. The invention further discloses a control method for the engine position management. The system and the method are capable of achieving the process of the synchronism of an engine rapidly and steadily.

The invention provides a variable-flow engine cooling system and a method. The system comprises a water temperature sensor, a vehicle speed sensor, an intake air temperature sensor, a crankshaft position sensor, a torque sensor and an ECU. The water temperature sensor is used to collect the water temperature of the engine. The vehicle speed sensor is used for collecting the vehicle speed of the engine; the intake air temperature sensor is used for collecting the intake air temperature of the engine; the crankshaft position sensor is used to collect the rotational speed of the engine; the torque sensor is used to collect the load of the engine; the ECU is used for obtaining duty cycle accord to water temperature, vehicle speed, intake air temperature, rotational speed and/or load, and controlling the flow rate of the electronic pump according to the duty cycle; an external electronic pump can be arranged; when the engine warm-up is started, the electric water pump is controlled not to run or to run at low speed; when the engine is in the medium speed load condition, the flow rate of the electronic pump is controlled; the flow rate of the cooling system is increased to speed up the rapid cooling of the engine.

The invention discloses automobile sensor detection equipment and a method for detecting the performances of sensors by utilizing the same. The automobile sensor detection equipment comprises a working table, a digital circuit transmission system, a workpiece clamping mechanism, a detection-air-gap regulating and detection mechanism, a signal system, a control system, a data acquisition system and a signal analysis system, wherein the digital circuit transmission system is arranged on the working table; the control system is arranged in the working table; a signal wheel and a sensor power supply are arranged in the signal system; and an acquisition card and a current sensor are arranged in the data acquisition system. According to the invention, the performances of a crankshaft position sensor, an ABS (Anti-lock Brake System) sensor, a camshaft position sensor, a vehicle speed sensor and the like can be subjected to comprehensive and automatic detection; the performances of the sensors can be comprehensively and automatically detected; the automobile sensor detection equipment not only has high precision, high stability and high efficiency and is easy to operate, but also is not influenced by the subjectivity of an operator; and the requirement on the optimal control of the performances of the sensors in the development and manufacturing of the sensors can be met.

The invention discloses a diesel/natural gas active blending combustion electronic control system and method. The electronic control system comprises a single-chip microprocessor, a natural gas nozzle intelligent drive circuit, a diesel nozzle drive circuit, a pure diesel mode/active blending combustion mode diverter switch, a load signal processing circuit and a self-adapting processing circuit, wherein the natural gas nozzle intelligent drive circuit, the diesel nozzle drive circuit, the pure diesel mode/active blending combustion mode diverter switch, the load signal processing circuit and the self-adapting processing circuit are respectively connected with the single-chip microprocessor. The load signal processing circuit receives a detection signal of an engine load sensor. The self-adapting processing circuit receives a detection signal of a crankshaft position sensor. The crankshaft position sensor measures the rotating position and the rotating speed of an engine crankshaft. The electronic control system is connected with an original diesel engine electronic control system in parallel and does not depend on the original diesel engine electronic control system, and therefore the optimal control over fuel-injection quantity, gas-injection quantity and fuel injection timing for blending combustion is achieved; besides, the detonation phenomenon which may occur in the passive blending combustion process of dual fuel is avoided fundamentally, and the reliability of long-term work of a dual-fuel engine is guaranteed.

The invention relates to a camshaft and crankshaft position relevance analogy method and a system, which is aimed at providing a system designed for simulating an internal combustion engine when incorrect valve timing exists. The analogy system is aimed at calibrating and/or verifying a special camshaft-crankshaft relevance diagnosis algorithm. The analogy system comprises an analogy module which is communicated with a crankshaft position sensor, a camshaft position sensor and a motor control module; wherein the analogy module comprises a first selector selected for processing the lapse value of a periodic signal, and a correction module for receiving the camshaft position signal from the camshaft position sensor and generating corrected camshaft position signal based on the crankshaft position signal and the lapse value.

The invention discloses a hydrogen generator set. The hydrogen generator set comprises a generator body which comprises an energy supply system, an energy transduction system and a control unit. The energy supply system comprises a hydrogen supply unit and a fuel gas injection valve connected with the hydrogen supply unit. The energy transduction system comprises an air filter and a plurality of sensors connected with the air filter. The control unit is composed of an electronic control unit (ECU). The sensors comprise the intake air temperature and pressure sensor, the water temperature sensor, the crankshaft position sensor, the oxygen sensor and the phase sensor. Hydrogen is effectively used as energy, the product of combustion is water and no pollution is caused; the quantity of heat of combustion is high and more heat is released; hydrogen has extensive sources and is renewable; the defects that hydrogen is low in density and high in flow speed are overcome, the hydrogen generator set effectively protects an engine against backfire, damage to components is avoided, and energy conservation and environmental protection are effectively achieved.

The invention discloses a hydrogen/ammonia dual-fuel engine and a control method. The invention relates to an ammonia-hydrogen engine and a control method thereof, in particular to an engine capable of adjusting the mixing ratio of hydrogen and ammonia according to the working condition of the engine and a control method, and aims at achieving high-efficiency and high-power output and controlling knocking. The engine mainly comprises a gas inlet system, a hydrogen supply system, an ammonia supply system and a control system. An ECU judges the position and the rotating speed of a crankshaft through a crankshaft position sensor and a rotating speed sensor, judges the occurrence of knocking according to a knocking sensor, and adjusts the injection time and the injection pulse width of a hydrogen pressure reducing valve and a hydrogen injector of the hydrogen supply system according to requirements; and meanwhile, the injection time and the injection pulse width of an ammonia pressure reducing valve and an ammonia injector of the ammonia supply system are adjusted, so that the ammonia-hydrogen mixing ratio is determined. The engine and the control method can eliminate the knocking phenomenon of the hydrogen engine and improve the working range of the hydrogen engine.

The invention discloses an engine knocking measurement device. The device comprises a cylinder pressure sensor which is installed on an engine with a cylinder pressure sensor installation hole and is used for sensing the cylinder pressure in a combustion chamber, a charge amplifier which is used for converting a charge signal sensed by the cylinder pressure sensor into a voltage signal, a data collection card which is used for collecting the voltage signal output by the charge amplifier, and a knocking judger which is used for getting a knocking peak PK according to a cylinder pressure signal collected by the data collection card, comparing the knocking peak PK with a preset knocking threshold TPK, judging that engine knocking is carried out if the knocking peak PK is greater than the knocking threshold TPK, and judging that engine knocking is not carried out if the knocking peak PK is smaller than the knocking threshold TPK. The device only needs the cylinder pressure sensor, and does not need a crankshaft position sensor. Therefore, the test cost in the process of engine research and development process is reduced, and the test efficiency is improved.

An engine ECU executes a program including the steps of: setting a knock waveform model corresponding to engine speed sensed by a crank position sensor; calculating knock intensity N based on the result of comparison between a detected waveform and the set knock waveform model; when the knock intensity N is larger than a predetermined reference value, determining that knocking has occurred; and when the knock intensity N is not larger than the predetermined reference value, determining that knocking has not occurred.