An electronic throttle control device and method

Abstract

The present invention relates to an electronic throttle control device and method, comprising: a main processor, used for providing an enable signal of a drive circuit after handshaking with the coprocessor, and outputting an analog signal according to an analog signal input circuit The throttle valve driving signal is sent to the driving circuit; the coprocessor is used for fault diagnosis of the analog signal input circuit after handshaking with the main processor, and the coprocessor stops the driving circuit when a fault occurs; the driving circuit is connected with the main processor After the motor is connected, it is connected to the throttle, which is used to drive the motor to operate according to the received throttle driving signal to control the opening of the throttle. In this method, the coprocessor performs fault diagnosis of the analog signal input circuit at all times, and sends an alarm message when a fault occurs. The invention immediately stops the motor when a problem is found, and returns to the initial position to ensure the out-of-control state and the safety of the vehicle; the main processor is used to control the drive circuit to realize precise control of the throttle opening.

Description

technical field [0001] The invention relates to a throttle mechanism device and control of an electronically controlled fuel injection system, and the design field of an electronic throttle of an automobile engine, in particular to an electronic throttle control device and method. Background technique [0002] The engine electronic throttle uses a set of sensors, actuators and computer boards to replace the mechanical transmission structure between the accelerator pedal and the engine throttle on traditional cars. The electronic throttle control device is used to control the opening of the electronic throttle. The system can adjust the engine throttle opening according to the driver's intention and power system control requirements, change the engine torque output, and dynamically adjust the transfer function from the accelerator pedal to the throttle according to changes in different working conditions, effectively reducing fuel consumption and emissions, and optimizing driv...

AI Technical Summary

Problems solved by technology

Using this technology, the control unit in the electronic throttle is not organically combined with the engine management system, and the target value of the throttle opening is given by the host computer, so the control flexibility is reduced and the cost is also increased

When the opening position sensor or the accelerator pedal sensor on the electronic throttle fails, the feedback signal or the driver's intention cannot be correctly reflected to the microprocessor, making the electronic throttle not work properly

If the microprocessor fails, there are no other detection measures, so the security is not good

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