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The speed control system of diesel engine is one typical nonlinear system. In order to control speed of the engine, in the paper, the nonlinear model of the 2135 engine governor is established. And the discrete sliding mode variable structure controller is designed. In-ring simulation of MATLAB has proved that when controlling a nonlinear system, the sliding mode variable structure control (VSC) has...
The precise pressure control in common rail will directly influence the performance of common rail diesel engine, so it is very important to control it effectively. Because common rail pressure was nonlinear, time-variable and disturbed, it is difficult to realize accurate pressure control with traditional control methods. Conventional PID control can not meet the demand of precise diesel common rail...
This paper describes a diesel engine lean NOx trap (LNT) regeneration control system using a nonlinear model predictive control (NMPC) technique. A two-level NMPC architecture is proposed for the LNT regenerations. The control objective is to minimize the fuel penalty caused by LNT regenerations while keeping the tailpipe NOx emissions amount under the regulation level. A physically-based and experimentally-validated...
To control cylinder pressure in diesel engine multiple injections is presented by using new control strategy. The improvements of the solenoid injector and of the electronic control unit of the present common rail (CR) injection system allow the use of multiple sequential injections. Two injections are included in the new injection strategies. The first injection is the pre-injection and at 33 CAD...
Diesel engine speed control system is one typical nonlinear system. In order to control speed of the single input nonlinear engine, the nonlinear model of the 4135 engine governor is established and the sliding mode variable structure controller is designed in the paper. Simulation in MATLAB has demonstrated that the sliding mode variable structure control is able to respond quickly, robust against...
Air management process in a turbocharged diesel engine is a multivariable, highly coupled nonlinear system with fast dynamics. Because of this, control algorithms with reasonably low computation times (enabling real time application) must be used. Furthermore, testing of new algorithms on a real engine is expensive. Therefore, a detailed non-linear engine simulator based on a first principles model...
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