Electronic air throttle control device and method

Abstract

The invention relates to a device and a method for controlling an electrical air damper. The device comprises a main processor, an auxiliary processor and a drive circuit, wherein the main processor is used for providing an enable signal of the drive circuit after being communicated with the auxiliary processor in a handshaking way and outputs a driving signal of the electrical air damper to the drive circuit according to an analog signal transmitted by an analog signal input circuit, the auxiliary processor is used for diagnosing the failure of the analog signal input circuit after being communicated with the main processor in a handshaking way and stopping the work of the drive circuit when a failure is generated, and the drive circuit is connected to the electrical air damper after being connected with a motor and is used for controlling the size of the opening of the electrical air damper by driving the motor to rotate according to the received driving signal of the electrical air damper. In the method, the auxiliary processor diagnoses the failure of the analog signal input circuit all the time and sends alarm information when the failure is generated. In addition, the electrical air damper control device immediately stops the operation of the motor after discovering the failure and enables the motor to return to an original position so as to ensure the safety of an automobile in a incontrollable state, and the electrical air damper control device utilizes the main processor to control the drive circuit so as to realize the precise control of the opening of the electrical air damper.

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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