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Feng Qishan
Zhang Jianwu
Yin Chengliang
School of Mechanical Engineering,
Shanghai Jiaotong University,
Shanghai 200030, China |
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MODELING AND
IMPLEMENTATION OF SPEED GOVERNOR FOR THE HYBRID ELECTRIC VEHICLE
ENGINE*
Abstract:
A speed control analysis for an in-line gasoline fueled internal combustion (IC) engine is presented for the purpose of alleviation of high frequency oscillations in engine revolutions. A dynamic cylinder-by-cylinder model is proposed, base on slider-crank mechanism, which is extended to develop a digital governor providing a high fidelity estimation of rotary speed oscillation for hybrid vehicle engines. A modified PID controller that P and I gain is placed in feedback path is also described for hybrid electric vehicle (HEV) engine speed regulation. By comparison between measured and estimated signals, it is demonstrated that a good agreement has been achieved and the governor behaves an excellent damping speed ripple.
Key words:
Digital speed governor Engine dynamic model
Slider-crank mechanism Hybrid electric vehicle (HEV)
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