Control device and method for air system of diesel engine
AssigneeWeichai Power Co., Ltd.
InventorsGuangdi Hu, Shaojun Sun, Dehui Tong, Shenggang Guo, Yingli Gong
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Abstract
A control device and method for the air system of a diesel engine is disclosed. The feature of the diesel engine is characterized by transfer function. During the control process, a decoupling transfer function is computed according to the transfer function and the steady working parameters of the diesel engine. By the decoupling transfer function acting on the processed state parameters of the air system, driving signals for controlling the exhaust gas recirculation system and the turbocharge system can be individually generated from one another, in order to realize decoupling of them.
Claims20
An apparatus for controlling an air system of a diesel engine in a steady state, wherein the air system comprises an exhaust gas recirculation system and a turbocharge system, the apparatus comprising:
- an operation condition acquiring module configured to acquire actual operation condition parameters indicating the diesel engine;
- a decoupling computation module coupled to the operation condition acquiring module, configured to compute a decoupling transfer function based on the parameters from the operation condition acquiring module and a transfer function characterizing the diesel engine;
- an air system parameter processing module coupled to the operation condition acquiring module, configured to process parameters indicating a state of the air system;
- and
- a signaling generating module coupled to the decoupling computation module and the air system parameter processing module, configured to generate a first driving signal for the exhaust gas recirculation system and a second driving signal for the turbocharge system based on the decoupling transfer function from the decoupling computation module and processing results from the air system parameter processing module.
A method for controlling an air system of a diesel engine in a steady state, wherein the air system comprises an exhaust gas recirculation system and a turbocharge system, the method comprising:
- acquiring actual operation condition parameters indicating the diesel engine;
- computing a decoupling transfer function based on the parameters and a transfer function characterizing the diesel engine;
- processing parameters indicating a state of the air system;
- and
- generating a first driving signal for the exhaust gas recirculation system and a second driving signal for the turbocharge system based on the decoupling transfer function and the results of processing.
Dependencies are inferred from the claim text.