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A petrol engine (known as a gasoline engine in North America) is an internal combustion engine with spark-ignition, designed to run on petrol (gasoline) and similar volatile fuels.

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Nobrainer's Think Tank " Acetone in Gasoline - Subjected to laboratory ...

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"The Future of the Gasoline Engine"

Mercedes unveils the DiesOtto, a new engine offering the high torque and fuel economy of a diesel ... 's Wall Street News Blog. Current Issue. Free Gift ...www.businessweek.com/autos/content/jul2007/bw20070726_321303...

R-Squared Energy Blog: World's Smallest Gasoline Engine

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Mercedes-Benz gasoline engines since 1945 | BenzInsider.com - A ...

Get the latest news, reviews and rumors about Mercedes-Benz and other brands in its Group from the Official Mercedes-Benz Fan Blogbenzinsider.com/2008/06/mercedes-benz-gasoline-engines-since...

gasoline engine -- Britannica Online Encyclopedia

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Wikipedia About Gasoline Engine

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A petrol engine (known as a gasoline engine in North America) is an internal combustion engine with spark-ignition, designed to run on petrol (gasoline) and similar volatile fuels.

It differs from a diesel engine in the method of mixing the fuel and air, and in the fact that it uses spark plugs to initiate the combustion process. In a diesel engine, only air is compressed (and therefore heated), and the fuel is injected into the now very hot air at the end of the compression stroke, and self-ignites. In a petrol engine, the fuel and air are usually pre-mixed before compression (although some modern petrol engines now utilise cylinder-direct petrol injection). The pre-mixing was formerly done in a carburetor, but now (except in the smallest engines) it is done by electronically-controlled fuel injection. Pre-mixing of fuel and air allows a petrol engine to run at a much higher speed than a diesel, but severely limits their compression, and thus efficiency.Fact: date=March 2009

The first fast-running petrol engine was invented by the German automobile pioneer Gottlieb Daimler.

Applications

Petrol engines have many applications, including:

  • Motor cars
  • Motorcycles
  • Aircraft
  • Motorboats
  • Small machines, such as lawn mowers, chainsaws and portable engine-generators

Working cycles

4-Stroke-Engine.gif

  • Four-stroke cycle
  • Two-stroke cycle
  • Wankel engine

Cylinder arrangement

Common cylinder arrangements are from 1 to 6 cylinders in-line or from 2 to 16 cylinders in V-formation. Alternatives include rotary and radial engines the latter typically have 7 or 9 cylinders in a single ring, or 10 or 14 cylinders in two rings.

Cooling

Petrol engines may be air-cooled, with fins (to increase the surface area on the cylinders) and cylinder head; or liquid-cooled, by a water jacket and radiator. The coolant was formerly water, but is now usually a mixture of water and ethylene glycol. This mixture has a lower freezing-point and a higher boiling-point than pure water, and also prevents corrosion, with modern antifreezes also containing lubricants and other additives to protect water pump seals and bearings. The cooling system is usually slightly pressurised to raise the boiling point of the coolant.

Compression ratio

The compression ratio is the ratio between the total volumes of the cylinder AND the combustion chambers - at the beginning, and end of the compression stroke. Broadly speaking, the higher the compression ratio, the higher the efficiency of the engine. However, compression ratio has to be limited to avoid pre-ignition of the fuel-air mixture which would cause engine knocking and damage to the engine. Modern motor-car engine generally have compression ratios of between 9:1 and 10:1, but this can go up to 11 or 12:1 for high-performance engines that run on higher octane fuel.

Search results for Gasoline Engine

Four-stroke engine: Definition from Answers.com

... sīkəl ) ( mechanical engineering ) An internal combustion engine cycle completed in four piston ... Four-stroke cycle used in gasoline and diesel engines ...www.answers.com/topic/four-stroke-cycle

E85 Fuel Use in Gasoline Engines

E85 Fuel Use in Gasoline Engines. Logo used in the United States for E85 fuel ... Gasoline Engine Conversion to E85 Fuel. 1 Experimental. 2 Risks. 2.1 Corrosion ...www.juliantrubin.com/encyclopedia/renewable_energy/gasoline_...

gasoline engine -- Britannica Online Encyclopedia

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GM - 2005 CRR - Products - Advanced Engines: Leaner Gasoline Engines

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News about Gasoline Engine

11 hurt in Fla. pleasure boat explosion

Chicago TribuneTAMPA, Fla. (AP) — Six people were seriously injured Saturday in a pleasure boat explosion in Florida's Tampa Bay, authorities said.http://www.chicagotribune.com/news/nationworld/sns-ap-us-flo...

Caution Flags Raised Over Ethanol Industry?s 15% Solution

New York TimesThe E.P.A. will decide this year whether to grant the ethanol industry?s request to raise the maximum amount of ethanol that can be added to gasoline.http://www.nytimes.com/2009/05/10/automobiles/10ETHANOL.html...

2009 Subaru Forester - Heels on Wheels Review

The Auto ChannelINTRO TO THE FORESTER VEHICLE The Forester dropped its nerdy look and adapted an SUV sex appeal that seems to work for both consumers and automotive media alike.http://www.theautochannel.com/F/news/2009/05/10/460459.html

2009 Hyundai Elantra Touring Review

The Auto ChannelCan an automaker come back from the dead? This is not a rhetorical question, as some of the biggest names in the industry are currently up against the wall. They could learn a lesson or three from Hyundai.http://www.theautochannel.com/F/news/2009/05/10/460452.html

Ferrari Readies F430 Successor

MotorTrendLighter, More Powerful, Faster, More Efficient Time is closing in on the Ferrari 430. The Scuderia and 16M Spider versions will maintain sales at a good level for a year or so. But this fall, the all-new 430 successor, already testing extensively, will be shown. Innovations will include a double-clutch transmission to replace the F1 system, and a direct gasoline injection engine. The V-8 engine .....http://www.motortrend.com/future/future_vehicles/112_0907_fe...

News about Gasoline Engine

Diesel Q&A

Wall Street JournalWith a diesel, because they usually have about 50% more torque than a gasoline engine, you can the same kind of driving with a smaller engine. When you look at the vehicle we're going to drive: it's a three liter diesel engine in a SUV – the Audi Q7http://online.wsj.com/article/SB121633031942163481.html?mod=...

Green Tech

CNET NewsBut, having both a battery and gasoline engine in one car raises costs, say advocates of all-electric cars. Fisker and Tesla have gone after the luxury market first, catering to environmentally oriented customers willing to pay for the latest ... http://news.cnet.com/8300-11128_3-54.html?keyword=%22electri...

Bosch: Clean Diesel is Key Part of Future Technology Mix

ForbesDiesel is good because it provides 30 percent better fuel economy than a comparable gasoline engine that translates into more miles per gallon and fewer trips to the pump. At today's prices, this fuel economy advantage more than offsets the price ... http://www.forbes.com/prnewswire/feeds/prnewswire/2008/10/06...

Car makers pushing the limits

Globe and MailMercedes said it will be the world's most economical luxury car with a gasoline engine. "This is just the beginning," said Dieter Zetsche, chief executive officer of Mercedes' parent Daimler AG. "With this technology, we can hybridize all of our ... http://www.theglobeandmail.com/servlet/story/RTGAM.20081008....

The Race For The Electric Car

CBS NewsIt'll drive on battery power alone for 40 miles; go beyond that, and a small gasoline engine kicks in to recharge the battery while you keep driving. "Seventy eight percent of trips in the United States are under 40 miles a day," Lutz tells Stahl ... http://www.cbsnews.com/stories/2008/10/05/60minutes/main4502...

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Gas Engine Row

Gas Engine Row is part of The Antique Gas & Steam Engine Museum, a nonprofit corporation, collects, preserves and displays examples of mechanical ingenuity and crafts associated ... http://gasenginerow.com

Petrol engine - Wikipedia, the free encyclopedia

A Petrol engine or Gasoline engine is an internal combustion engine with spark-ignition designed to run on petrol and similar volatile fuels. It differs from a diesel engine in the ... http://en.wikipedia.org/wiki/Gasoline_engine

Antique Hit and Miss Gas Engines - Harry's Old Engine - Steam Engines

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