How have engineers at the Ford Motor Company improved the fuel - ProProfs
     

How have engineers at the Ford Motor Company improved the fuel efficiency of a prototype car?



A. Doping its fuel with a trace of the heavy metal bismuth
B. Building engine parts out of lightweight lithium
C. Putting a big flashing sign on the dashboard that says \Slow Down!\
D. Giving the engine a shot of alcohol, but only when it really needs one

This question is part of New Scientist 2009 trivia quiz

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newscientist

Newscientist

Answered on Oct 25, 2017

Giving the engine a shot of alcohol, but only when it really needs one

Driving and alcohol dont usually mix, but giving a petrol engine an occasional slug of the hard stuff could make it as fuel-efficient as a petrol-electric hybrid. Called a direct-injection ethanol engine, the unit runs primarily on petrol. When it needs to deliver maximum power - to climb a hill or overtake, for example - the engine management computer adds a little ethanol to the fuel injected into the combustion chambers. See Alcohol makes autos more climate-friendly

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