汽车专业英语翻译 5

HowDirectInjectionEnginesWorkWhatkindofenginewillpropelyournextcarortruck?Ifyou'vebee... How Direct Injection Engines Work

What kind of engine will propel your next car or truck? If you've been toying around with the idea of buying a diesel for its fuel economy (try nearly 50 mpg for the Volkswagen Jetta TDI), well, you may not need to give up on the trusted and familiar gasoline engine just yet.

That's because one of the technologies that makes diesels so miserly on fuel is coming to gasoline engines, too. It's called direct injection, and it refers to how the fuel makes its way inside an engine's controlled-explosion room, better known as a combustion chamber.

In a garden-variety gasoline engine with fuel injection, gasoline takes a more roundabout route than it does with the direct injection method. This indirect approach causes all manner of inefficiencies in burning the fuel, and it can result in a lot of usable energy getting wasted -- and you not getting the most for the money you spent at the pump.
In a direct injection engine, however, the fuel skips the waiting period it would have to endure inside a standard engine and instead proceeds straight to the combustion chamber. This allows the fuel to burn more evenly and thoroughly. For the driver, that can translate to better mileage and greater power to the wheels.

In the past, direct injection posed too many technical hurdles to make it worthwhile for mass market gasoline automobiles. But with advances in technology and greater pressure to make cars run more cleanly and efficiently, it looks as if gasoline direct injection -- or GDI as it's referred to in industry lingo -- is here to stay. In fact, most of the major car manufacturers make or plan to soon introduce gasoline cars that take advantage of this fuel saving and performance enhancing system.
Direct Injection Basics

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With direct injection engines, fuel is squirted directly into the combustion chamber instead of hanging out in the air intake manifold.
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推荐于2021-01-29
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直喷发动机的工作模式
你的下一辆车准备买柴油的还是汽油的,虽然你可能考虑柴油车省钱(大众捷达TDI每加仑50公里),但也不必放弃人们早已用惯了的汽油发动机车,
那是因为使柴油车节油的技术已开始用于汽油发动机,该技术称为直喷式(可能就是人们说的电喷),就是燃油进入发动机燃烧室的方式,
普通的汽油机的燃油注入线路要比直喷汽油机的线路曲折,该曲折线路造成了燃油的燃烧效率低,导致可用能浪费,而在直喷发动机上,燃油直接进入燃烧室,跳过了等待时间,这使得燃油的燃烧更加彻底,对于驾车人就是行驶里程的上升,车轮可获得更大驱动力,过去,直喷模式在技术上有许多障碍,还不能用于市场需求,但随着技术进步和对汽车的尾气清洁和省油的压力的上升,汽油直喷模式GDI成了汽车工业的口号,事实上大多数汽车制造商已经开始采用或计划采用这种节油和高性能的系统生产汽车,直喷发动机燃油是直接喷入燃烧室,而不是经过化油器吸入的,
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