Thursday, July 29th, 2010
The engine control system consists of three groups including sensors (and sensor output signals), engine ECU, and actuators. This chapter explains the sensors (signals), power circuitry and ground circuitry, and ...
Posted in Gasoline Engine Control System | No Comments »
Tuesday, July 27th, 2010
A gasoline engine produces power through the explosion of a mixture of gasoline and air. The three essential elements for a gasoline engine to produce power are the following
1. Good ...
Posted in Gasoline Engine Control System | No Comments »
Thursday, July 1st, 2010
The fuel accumulated during the ignition delay period is burned at one time during the flame propagation period. Thus the pressure inside the combustion chamber rises sharply. The pressure inside ...
Posted in Diesel Engine | No Comments »
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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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, ...
Posted in Gasoline Engine | No Comments »
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 ...
Posted in Gasoline Engine | No Comments »
Wednesday, June 9th, 2010
1. What is emission control system?
The emission control system reduces the emissions, which are harmful to the environment and human beings produced by automobiles.
2. What are emissions?
The term emission gas ...
Posted in Gasoline Engine | No Comments »
Sunday, March 21st, 2010
All gasoline engines mounted on Toyota automobiles are four-stroke engines. Four-stroke engines operate by continuous and regular repetition of the following sequence:
1. Intake stroke
2. Compression stroke
3. Combustion stroke
4. Exhaust stroke
Basic ...
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Saturday, March 13th, 2010
Necessity of compressing the airfuel mixture
When an uncompressed air-fuel mixture is ignited, it burns slowly due to the low density of fuel and air. However, when compressed air-fuel mixture is ...
Posted in Gasoline Engine | No Comments »
