论文信息 - Use of feedforward in idle speed control for a direct injection spark ignition engine during lean burn

Use of feedforward in idle speed control for a direct injection spark ignition engine during lean burn

The use of reference feedforward control is investigated in the idle speed problem for a direct-injection spark-ignition engine during lean burn. This additional control signal is added to improve the speed and air-fuel ratio transient responses due to large load torque disturbances. A baseline control design is given, and a feedforward algorithm is presented and added to the baseline controller. The design is illustrated through simulations of step responses due to disturbances in load torque. With feedforward in the air control loop, the maximum engine speed droop is decreased more than 20%, while also improving the setpoint control of air-fuel ratio.

[1] Jing Sun,et al. Idle speed control of a direct injection spark ignition stratified charge engine , 2001 .

[2] Jeffrey Arthur Cook,et al. A nonlinear engine model for drivetrain system development , 1991 .

[3] Jessy W. Grizzle,et al. From stoichiometry to ultra lean burn in a direct injection spark ignition engine model , 2002, Proceedings of the 2002 American Control Conference (IEEE Cat. No.CH37301).

[4] Yuen-Kwok Chin,et al. Engine Dynamics: Time-Based Versus Crank-Angle Based , 1986 .

[5] I. Kolmanovsky,et al. Optimization of complex powertrain systems for fuel economy and emissions , 1999, Proceedings of the 1999 IEEE International Conference on Control Applications (Cat. No.99CH36328).

[6] Stephen Yurkovich,et al. CRANK-ANGLE DOMAIN MODELING AND CONTROL FOR IDLE SPEED , 1997 .