http://link.springer.com/article/10.1007%2FBF03184462
Integrated engine-CVT control considering powertrain response lag in acceleration
Abstract
In this paper, an engine-CVT integrated control algorithm is suggested by considering the inertia torque and the CVT ratio change response lag in acceleration. In order to compensate for drive torque time delay due to CVT response lag, two algorithms are presented: (1) an optimal engine torque compensation algorithm, and (2) an optimal engine speed compensation algorithm. Simulation results show that the optimal engine speed compensation algorithm gives better engine operation around the optimal operation point compared to the optimal torque compensation while showing nearly the same acceleration response. The performance of the proposed engine-CVT integrated control algorithms are compared with those of conventional CVT control, and It is found that optimal engine operation can be achieved by using integrated control during acceleration, and improved fuel economy can be expected while also satisfying the driver’s demands.
abcpanadol wrote:
QX60, JX35都是CVT車,加速感卻不同,
所以有可能不是CVT的關係, 而是渦輪的關係?
QX60到中高速才會爆發, 符合渦輪的特性
...(恕刪)
個人認為不是這樣,因為 QX60 hybrid 使用的QR25DER直四引擎,
是屬於機械增壓,機械增壓的特徵,沒有渦輪增壓遲滯現象,除了在
低轉速便可獲得增壓外,增壓的動力輸出也與曲軸轉速成一定的比例,
即機械增壓引擎的反應隨著轉速的提高,動力輸出隨之增強,因此
機械增壓引擎的操作感覺與自然進氣極為相似,卻能擁有較大的馬力與扭力。
對比 QR25DE 輸出170HP來說,增加機械增壓的 QR25DER 則是 230HP,
馬力是增加了60HP。
說是這樣說,由於沒有真的開過 QX60 hybrid ,找一天來去試試好了。
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