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Current automotive engine developments have been driven by improving vehicle fuel consumption. Various ideas have been explored to reduce the fuel consumption of vehicle including variable cylinder engine. The benefit is given by the pumping loss reduction but the scope to reduce mechanical pumping loss has still remained. In this paper, the estimation of fuel consumption on a multi-crankshaft engine...
The paper presents a mode shift control strategy of dual-mode power-split hybrid electric vehicle during the mode shift phase, intended to reduce the torque variation in the driveshaft and improve the shift quality. To evaluate the shift characteristics of this power-split hybrid electric vehicle, the detailed dynamic models are developed. Based on the dynamic models, a mode shift performance simulator...
In automotive applications, effective and affordable acquirement of drive shaft torque value could greatly benefit the vehicle driveline feedback control. This paper presents a model-based torque observer to estimate the drive shaft torque using transmission output shaft angular speed and driven wheel angular speed. A detailed drive line model used for characterizing the behavior of the HEV driveline...
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