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CFX aids design of world's most efficient steam turbine" (PDF). Archived from the original (PDF) on 16 November 2010 . Retrieved 28 August 2010.

On the first upstroke of the engine there would be no fuel inducted into the cylinder as the crankcase was empty. On the downstroke, the piston now compresses the fuel mix, which has lubricated the piston in the cylinder and the bearings due to the fuel mix having oil added to it. As the piston moves downward it first uncovers the exhaust, but on the first stroke there is no burnt fuel to exhaust. As the piston moves downward further, it uncovers the intake port which has a duct that runs to the crankcase. Since the fuel mix in the crankcase is under pressure, the mix moves through the duct and into the cylinder.a b Pulkrabek, Willard W. (1997). Engineering Fundamentals of the Internal Combustion Engine. Prentice Hall. p. 2. ISBN 978-0-13-570854-5. There are also starters where a spring is compressed by a crank motion and then used to start an engine. That being said, EVs do still require some maintenance. Brakes, tyres, and other consumables should be inspected periodically, in line with the manufacturer’s instructions. These inspection schedules tend to occur less frequently than combustion engine vehicles as EVs are lighter on tyres and brakes because of regenerative braking. Spark ignition gasoline and compression ignition diesel engines differ in how they supply and ignite the fuel. In a spark ignition engine, the fuel is mixed with air and then inducted into the cylinder during the intake process. After the piston compresses the fuel-air mixture, the spark ignites it, causing combustion. The expansion of the combustion gases pushes the piston during the power stroke. In a diesel engine, only air is inducted into the engine and then compressed. Diesel engines then spray the fuel into the hot compressed air at a suitable, measured rate, causing it to ignite. Improving Combustion Engines

Small businesses are worried about the practicalities, and we’ve got further to go to get the charging infrastructure truly nationwide.” However, this means that if you regularly drive more than about 30-40 miles a day, your PHEV will be acting like a normal petrol / diesel car for all of those miles after 30-40 miles, and be polluting the environment. Examples of PHEVs In 2-stroke crankcase scavenged engines, the interior of the crankcase, and therefore the crankshaft, connecting rod and bottom of the pistons are sprayed by the two-stroke oil in the air-fuel-oil mixture which is then burned along with the fuel. The valve train may be contained in a compartment flooded with lubricant so that no oil pump is required.The Beare Head and "piston charger" engines operate as opposed-piston engines, two pistons in a single cylinder, firing every two revolutions rather than every four like a four-stroke engine. Toyota, which has plants in Burnaston, Derbyshire, and Deeside, north Wales, followed Jaguar Land Rover in embracing the "pragmatic move", saying the announcement gives the industry the "clarity"it has been asking for.