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HCU, HCU clutch fault detecting and processing method

A technology of detection method and processing method, applied in the direction of instrument, electrical test/monitoring, test/monitoring control system, etc., can solve the problems of vehicle safety risk, HCU unable to recognize, clutch unable to close normally, etc., to improve driving safety , the effect of avoiding driving hazards

Active Publication Date: 2017-05-17
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in some cases, the clutch cannot be closed normally, and there is a fault, but the HCU cannot recognize it, which may cause a safety risk to the vehicle

Method used

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  • HCU, HCU clutch fault detecting and processing method
  • HCU, HCU clutch fault detecting and processing method
  • HCU, HCU clutch fault detecting and processing method

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Embodiment Construction

[0052] There are two power sources in a hybrid electric vehicle, the engine and the motor. The hybrid control unit (Hybrid Control Unit, HCU) is the core of the entire vehicle control, and is mainly responsible for coordinating the engine management system (Engine Management System, EMS) and the motor controller (Microcontroller Unit, MCU) work, and is responsible for the high and low voltage power management and fault detection of the entire power system.

[0053] At present, the HCU sends a clutch closing control signal, and after the clutch is controlled to be closed, the clutch is normally closed by default. However, in fact, the clutch may slip and malfunction, so that the torque expected by the driver may not be transmitted normally, and even cause the power source to fly or the clutch to burn out, thereby posing a threat to driving safety.

[0054] Aiming at the problems in the prior art, the embodiment of the present invention provides an HCU and its detection and proc...

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Abstract

The invention provides an HCU, an HCU clutch fault detecting and processing method wherein the detecting method comprises: when the closing control signal for the clutch is transmitted, detecting whether the clutch is experiencing a sliding fault or not; and when a sliding fault is detected to have occurred to the clutch, diagnosing the fault type of the sliding fault of the clutch. With the above schemes, it is possible to detect the clutch fault and to make the driving more secure.

Description

technical field [0001] The invention relates to the field of fault detection of an automobile power system, in particular to an HCU and a method for detecting and processing a clutch fault. Background technique [0002] With the increasing international attention to energy security and environmental protection issues, countries have become more and more strict on vehicle emissions. Reducing dependence on energy and realizing energy conservation and emission reduction has become an urgent problem to be solved for the sustainable development of the world economy. Hybrid vehicles and pure electric vehicles have become the development trend of today's automobile industry. The gasoline-electric hybrid vehicle combines the motor and the engine to achieve reasonable energy-saving and emission-reduction effects for various working conditions. Hybrid functions such as idling stop, motor start, smart charging, regenerative braking, motor assist, electric crawling, etc. have the adva...

Claims

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Application Information

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IPC IPC(8): G05B23/02
CPCG05B23/0235G05B2219/24048
Inventor 周宇星陈斌沈延林双武王伦珍赵允喜
Owner SAIC MOTOR
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