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SELF DRIVING CAR BY GOOGLE
By
Rahul Mishra
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Google yesterday announced its own design for self-driving cars, which will drive people around without a steering wheel or pedals. It's the latest projec t from Google X, the company's skunkworks group headed by Google co-founder Sergey Brin. TWO PEOPLE, NO DRIVERS : The company has already shown off its own self-driving technology, which retrofits existing vehicles made by Toyota and Lexus. However this new version, which was announced by Brin at the Recode conference, is a new design that fits two people, and is driven entirely by computer using a variety of on-board computers and sensors.
2 - stroke engine
By
Rahul Mishra
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TWO STROKE ENGINE The two stroke engine employs both the crankcase and the cylinder to achieve all the elements of the Otto cycle in only two strokes of the piston. Intake The fuel/air mixture is first drawn into the crankcase by the vacuum that is created during the upward stroke of the piston. The illustrated engine features a poppet intake valve; however, many engines use a rotary value incorporated into the crankshaft. Crankcase compression During the downward stroke, the poppet valve is forced closed by the increased crankcase pressure. The fuel mixture is then compressed in the crankcase during the remainder of the stroke. Transfer/Exhaust Toward the end of the stroke, the piston exposes the intake port, allowing the compressed fuel/air mixture in the crankcase to escape around the piston into the main cylinder. This expels the exhau...
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