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20 results about "Electronic control unit" patented technology

An Electronic Control Unit (ECU) is any embedded system in automotive electronics that controls one or more of the electrical systems or subsystems in a vehicle. Types of ECU include Engine Control Module (ECM), Powertrain Control Module (PCM), Transmission Control Module (TCM), Brake Control Module (BCM or EBCM), Central Control Module (CCM), Central Timing Module (CTM), General Electronic Module (GEM), Body Control Module (BCM), Suspension Control Module (SCM), control unit, or control module. Taken together, these systems are sometimes referred to as the car's computer (Technically there is no single computer but multiple ones.) Sometimes one assembly incorporates several of the individual control modules (PCM is often both engine and transmission).

Brake System for Motor Vehicles and Method for Operating a Brake System

InactiveUS20140203626A1Reduce travel requirementsFluid braking transmissionBrake action initiationsElectricityAtmospheric pressure
A brake system includes a hydraulic actuating unit, which can be actuated by way of a brake pedal, a travel simulator interacting with the hydraulic actuating unit, a pressure medium reservoir under atmospheric pressure assigned to the hydraulic actuating unit, a first electrically controllable pressure supply device, a second electrically controllable pressure supply device, an electronic control unit and an electronically controllable pressure modulation device for setting wheel-specific brake pressures. The brake system preferably operates in a “brake-by-wire” mode but can also operate in a fallback mode. The second electrically controllable pressure supply device can provide boost volume during braking in a fallback mode.
Owner:CONTINENTAL TEVES AG & CO OHG

Controller regional network bus safety communication method, device and system

ActiveCN108965218AImprove securityReduce transmission overheadUser identity/authority verificationBus networksSecure communicationArea network
The present invention provides a controller regional network bus safety communication method, device and system which can effectively withstand attackers' eavesdropping, injection and attack replay. Agateway ECU (Electronic Control Unit) generates a random number and sends the random number to at least one CAN (Controller Area Network) bus ECU. A first CAN bus ECU obtains the random number sent by the gateway ECU and generates a first information authentication code based on secret keys of a first CAN identifier, the random number sent by the gateway ECU, a counting value of the first CAN identifier and data of a first CAN message. The first CAN bus ECU performs encryption operation based on the secret keys of the first CAN identifier and a second CAN message to obtain a first encryptionoperation result and perform equal length encryption operation for the first encryption operation result, the first information authentication code, the counting value of the first CAN identifier andthe data of the first CAN message so as to obtain the first CAN message with encryption authentication and send the first CAN message with encryption authentication.
Owner:HUAWEI TECH CO LTD

Automatic clutch actuator for HEV (Hybrid Electrical Vehicle) and control method of automatic clutch actuator

ActiveCN104061256AControl movementImprove work efficiencyAutomatic clutchesSolenoid valveHybrid electrical vehicle
The invention discloses an automatic clutch actuator for a HEV (Hybrid Electrical Vehicle) and a control method of the automatic clutch actuator. The control method is characterized in that an electronic control unit controls the operation of a clutch air cylinder; the control method comprises the steps of obtaining analog quantity which is fed back by a clutch position sensor; judging a deviation value between an actual value and a set value according to the analog quantity, and adjusting an air exhaust duty ratio and an air inlet duty ratio of the clutch air cylinder through an electromagnetic valve if the deviation value is in a preset region; obtaining the position of a current clutch again through the clutch position sensor according to a preset time interval, computing the advancing distance of the clutch along a central shaft, and computing the advancing speed of the clutch; judging whether the advancing speed of the clutch along the central shaft is greater than a set speed upper limit or not, and realizing deceleration through adjusting the clutch air cylinder if the advancing speed of the clutch along the central shaft is greater than the set speed upper limit. According to the automatic clutch actuator and the control method, disclosed by the invention, the movement of the clutch can be more accurately controlled, and the working efficiency of the clutch is increased.
Owner:武汉理工通宇新源动力有限公司

Liquid ammonia supply system of ammonia-mixed diesel engine

PendingCN113982788AElectrical controlInternal combustion piston enginesElectronic control unitLiquid ammonia
The invention relates to a liquid ammonia supply system of an ammonia-mixed diesel engine. A liquid ammonia storage device is connected with a liquid ammonia injection device through a connecting pipe and is used for storing liquid ammonia; the liquid ammonia spraying device is respectively connected with the liquid ammonia storage device and the engine cylinder, and is used for spraying the liquid ammonia stored in the liquid ammonia storage device to the engine cylinder; the safety valve is positioned on the connecting pipe between the liquid ammonia storage device and the liquid ammonia injection device and is used for controlling the communication between the liquid ammonia storage device and the liquid ammonia injection device; the signal acquisition device is used for acquiring a pressure signal in the liquid ammonia storage device and an ammonia concentration signal in gas exhausted by the cylinder; and the controller is used for enabling the liquid ammonia injection device to inject liquid ammonia to the air cylinder and enabling the safety valve to be opened and closed according to an ammonia concentration signal and a pressure signal when the engine air cylinder is in an air suction stroke. According to the system, liquid ammonia supply of the ammonia-mixed diesel engine is achieved, and the system is provided with an independent controller, does not communicate with an engine electronic control unit and is high in portability.
Owner:XIAMEN UNIV

High pressure spring force burst control system

InactiveCN105128802AProtect life safetyReasonable designPedestrian/occupant safety arrangementCar seatSteering wheel
The invention relates to a high pressure spring force burst control system, and belongs to the technical field of racing cars. The high pressure spring force burst control system comprises a car body, motors, telescopic rods, a lifting rod, a strong spring and stress sensors. The two ends of the first telescopic rod are connected with the first motor and a steering wheel respectively, the two ends of the second telescopic rod are connected with the second motor and a front support respectively, the two ends of the third telescopic rod are connected with the second motor and a rear support respectively, the two ends of the lifting rod are connected with the third motor and a top cover respectively, and the strong spring is arranged under a car seat. When an electronic control unit monitors collision of a racing car through the stress sensors, a driver is ejected out of the car through the strong spring to reduce the damage level of the racing driver. The high pressure spring force burst control system is reasonable in structure, simple in design, and suitable for optimization design of a racing car collision accident damage reducing system.
Owner:高海

Steering control device

ActiveUS20210094610A1Reduce displacementLearn accuratelyMechanical steering gearsAutomatic steering controlSteering angleElectric machine
A steering control device includes an electronic control unit. The electronic control unit detects an absolute steering angle. The electronic control unit controls driving of a motor. The electronic control unit determines whether movement of a turning shaft to one of right and left sides has been limited by an end contact or execution of end contact relaxation control. The electronic control unit acquires a plurality of limit position determination angles corresponding to the absolute steering angle. The electronic control unit permits update of an end-position-corresponding angle. The electronic control unit updates the end-position-corresponding angle stored in the electronic control unit.
Owner:JTEKT CORP

A new type of vehicle electric power steering fault-tolerant control device and method

ActiveCN103112495BImprove reliabilityImprove stabilitySteering linkagesAutomatic steering controlElectric power steeringControl theory
The invention discloses a novel automobile electric power steering fault-tolerant control device and a method, and belongs to the technical field of automobile chassis electronic control. The novel automobile electric power steering fault-tolerant control device is composed of a torque signal processing module, a motor monitoring module, an engine signal detection module, an automobile speed signal detection module, an electronic control unit (ECU) microprocessor, a logic drive circuit, a relay control module and an H bridge drive circuit control module. According to the novel automobile electric power steering fault-tolerant control device and the method, an ECU signal monitoring diagnosis module comprises signal voltage state monitoring of the torque sensor, judgment of signal failures of the torque sensor, judgment of signal voltage threshold values, and judgment of difference in main and auxiliary circuits of the torque sensor can be achieved, and diagnosis and protection of current relations between the torque sensor and a motor and other failures are achieved. Fault-tolerant control can be achieved to guarantee safe and stable driving of an automobile, a controller is not relied on the ECU completely, operation time of the microprocessor can be saved, and control accuracy and efficiency are improved.
Owner:HARBIN INST OF TECH
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