Archive for the ‘Gasoline Engine’ Category
Monday, June 21st, 2010 |
The turbocharger and supercharger are devices that force air into the cylinders creating a pressure that is greater than the atmospheric pressure in order to increase engine output. Generally, the ...
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Sunday, June 20th, 2010 |
1. Necessity
Determination of engine condition. By measuring CO/HC, it is possible to determine the engine condition, including the effectiveness of the airfuel ratio, and the operation of the emission control ...
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Saturday, June 19th, 2010 |
1. Necessity
The Fuel Evaporative Emission Control (EVAP) System temporarily absorbs the evaporated gas in the charcoal canister and channels it to the engine for burning, in order to prevent the ...
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Friday, June 18th, 2010 |
1. Necessity
Blow-by gas includes a large amount of unburned gas, which leaks out from the gap between the piston ring and cylinder wall into the crankcase. The Positive Crankcase Ventilation ...
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Thursday, June 17th, 2010 |
1. Necessity
The Exhaust Gas Recirculation (EGR) System recirculates some of the exhaust gases to the intake air system. The flame propagation becomes slow during the combustion when the exhaust gases ...
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Wednesday, June 16th, 2010 |
1. Necessity
When the throttle valve closes at high engine speed, a strong vacuum is generated inside the intake manifold. Some of the fuel adhering to the internal walls of the ...
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Monday, June 14th, 2010 |
Outline
The catalytic converter makes harmful substances (CO, HC and NOx) react chemically with harmless ones (H2O, CO2, N2) according to the exhaust gas passed. Generally platinum, palladium, iridium and rhodium, ...
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Sunday, June 13th, 2010 |
Emission control regulations
There are various regulations for most countries around the world today to prevent the air pollutants by emission gases. These are called emission regulations. The measurement method or ...
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Friday, June 11th, 2010 |
Theoretical Air-fuel Ratio
The theoretical air-fuel ratio is the ratio of the minimum amount of fuel and air (which contains oxygen) needed to fully burn the fuel. Gasoline is a mixture ...
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