Development of Engine Auxiliary Control System for the Powertrain of Hybrid Electric Vehicle

<div class="htmlview paragraph">The key way of energy saving is to optimize the operating range of the engine of a HEV (hybrid electric vehicle). An engine auxiliary control unit was developed with advanced embedded control system in this paper. It offers a control interface between the hybrid electric vehicle master control unit and the SI engine control unit. It can afford the function of engine direct start-stop, the transient torque and power control and the communication with the master control unit through SAE <a href="http://www.sae.org/technical/standards/J1939" target="_blank">J1939</a> CAN protocol. The experiment result shows that the design of the engine control interface is reasonable, the error of engine torque is decreased and the response of engine direct start-stop is fast-paced. So the hardware and software design of the engine auxiliary control unit can meet the request of engine control for the hybrid electric vehicle.</div>