System and method for updating programs and data of engine controller based on K line communication

Abstract

The invention relates to a system for updating programs and data of an engine controller based on K line communication. The system comprises a controller, a K line, a K line adaptor, an upper computer and a power source, wherein the controller is provided with a K line interface, connected to the K line through the K line interface, connected to the K line adaptor through the K line and then connected to the upper computer through the K line adaptor, and the power source is used for supplying power to the controller and the K line adaptor. The invention further relates to a method adopting the system for updating the programs and the data of the engine controller based on K line communication. By means of the system and method for updating the programs and the data of the engine controller based on K line communication, the programs and the rating data of the engine controller can be updated through one signal line in the engine controller, the structure is simple, using is convenient, the number of pins of plug-ins is reduced, it is ensured that the updated data are transmitted to the controller from the upper computer accurately and orderly, cost is lowered, and the application range is wide.

Description

technical field [0001] The invention relates to the field of engine controllers, in particular to the field of updating engine controller programs and calibration data, and specifically refers to a system and method for updating engine controller programs and data based on K-line communication. Background technique [0002] K-line is a communication bus standard widely used in the automobile industry, and it is widely used in many occasions. K-line communication mostly adopts half-duplex asynchronous serial communication, and the working voltage range is 8V ~ 18V. The CMOS level of the microcontroller is seamlessly connected. Each unit of the serial communication code includes 10-bit binary data, which are the start bit, 8-bit data, and stop bit. After each unit is sent, there is an idle wait, but it has not been used yet. to the engine controller program and calibration data update fields. [0003] The existing calibration data or program update of the engine controller us...

AI Technical Summary

Problems solved by technology

The CAN bus communication of the existing EFI motorcycle engine controller requires two signal lines, which increases the number of connector pins; at the same time, the EFI (or electronically controlled carburetor) motorcycle engine controller is an isolated one in the whole vehicle. The controller node does not need to communicate with other controllers; and the price of the control chip with the CAN interface is higher than that of the control chip with the K-line interface, and the CAN bus also needs a special transceiver chip, which increases the cost

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