A better design for the exhaust pipes adds to the efficiency, along with modified timing and pistons.

而优化设计的排气管和改进的计时器和活塞也有助于提高效率。

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The timing of the rotary valve, which is a key operating parameter for cryocoolers, determines the relationship between the intake and exhaust process.

而平面旋转阀的时序又是低温制冷机的一个重要参数，它决定了制冷机系统进气、排气过程之间的相互关系。

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Schemes of variable compression ratio (VCR), variable exhaust gas recirculation (EGR), variable exhaust valve timing, and EGR with stratification by tumble charge flow are recommended.

推荐可变压缩比（VCR）方案、可变废气再循环率（EGR）方案、可变排气门关闭时刻方案，以及废气再循环滚流分层充气方案等。

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Other bullet points for the 2014 Vanquish include an additional 55 horsepower (565 hp at 6, 750 rpm) and 37 pound-feet more torque (457 pound-feet at 5, 500 rpm) over the DBS. Aston's all-alloy 5.9-liter, mid-front-mounted V12 gets a sprucing up with variable timing on both intake and exhaust sides, as well as freer-breathing intake geometry.

WSJ: 2014 Aston Martin Vanquish Review: No, Mr. Bond, I Expect You to