| 摘要 |
<p>A turbo lag reduction system (38, Fig. 1 ) for a diesel engine includes a system (44, Fig. 1 ) for delivering a secondary fuel into the exhaust system 20, where it is burned upstream of a turbocharger turbine 30, accelerating the exhaust gases to drive the turbine. The turbine then delivers more compressed intake air. The secondary fuel is combusted only during certain operating conditions, such as during engine idle, when the vehicle is about to accelerate. Injection of secondary fuel may be triggered by a driver operated switch 68, with timer 69; by selection of a gear (72) and/or clutch disengagement (70); or where a traffic signal recognition camera 62 is fitted to the vehicle, by detection of an amber or green light. Vehicle (64) and engine speed sensors may contribute data signals; as can an "indicator on" signal (66).</p> |
