METHOD AND SYSTEM FOR ENGINE CONTROL

摘要

A system and method for reducing cab vibration during engine shutdown in a vehicle (10), including an ICE (12), an engine brake (14), and an electronic control unit (20) for controlling the engine and the engine brake, includes logic for determining when a shutdown condition is occurring, and logic for generating a control signal to activate the engine brake during the engine shutdown. A plurality of sensors (16), including engine speed sensor (18) connected to the controller (20) via input ports (22). The controller includes a microprocessor (24) connected with memory (26) via bus (28). The activation of the engine brake is performed only after the engine speed has fallen below a predetermined level. The system and method also automatically deactivates the engine at a preselected time, such as when the engine speed falls below a second predetermined level, to ensure that the engine brake is not activated upon restarting the engine.