The exhaust gas ingredients of pulse engines, with five different combustion chamber volumes, throttle valve at small, middle and wide opening positions respectively, are tested.

对五种不同燃烧室体积的脉冲发动机在小、中和大油门开度三种供油条件下测定其排放物。

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This is made possible by the variable intake system with a throttle valve enlarged from 76 to 82 millimeters, the optimized cylinder heads and an exhaust system with low backpressure.

这是可能的变量与节流阀进气系统增加到76到82毫米、优化缸盖和排气系统压力较低。

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Vehicles must not shift when wade and the throttle, this will cause exhaust pipe water, thus cause the engine damage.

车辆涉水时一定不要换挡和收油门，这样会造成排气管进水，从而造成发动机损坏。

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If anything, Porsche has managed to dial up the immediacy of the 911, with quicker reflexes the electrical steering is first-rate a more emotional exhaust note and, at full throttle, the capacity for real, edgy violence.

WSJ: 2012 Porsche 911 Carrera S Review: A Magnificent First Stab | Rumble Seat by Dan Neil

On light throttle openings, the 330bhp 3.4 sounds, frankly, like it has a blowing exhaust, the familiar flat-six hoarseness akin to a dog coughing up an angora sweater, but on brief revels to three-quarters of the rev-range, the wail starts to build.

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