The Research and Realization for Passenger Car CAN Bus

Abstract

In order to solve the problem of data interchange among many electronic devices of future automobile, moreover reduce wires and cost, and increase the total system reliability , we have developed a network control system of CAN (controller area network) bus based on CAN2.0B protocol and CAN bus controller MCP2510 aiming at our experiment sample car. We have applied it to an electronic control and detection system for a dry hybrid belt continuously variable transmission (A-CVT) developed by us, and it realizes the communication between the engine electric control unit (ECU) and transmission electronic control unit (TCU). The principle diagram of CAN bus control area network, the main software flow chart and hardware circuit are shown, and the experimental data wave cures when communicating are obtained. Through test with our experiment sample car equipped with the TCU and the network control system of CAN bus developed by us, the accelerating time up to 100 Km/h is 22s; and 23s with original in the same situation. The long-term test indicates that the network control system of CAN bus runs with stability and extendibility, and has good communication and control ability.