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GAS
The power supply system of a motor vehicle with LPG installation As fuel for vehicles with gas balloon installations use combustible gases: • compressed (natural) gases — mainly me- tan stored at pressures up to 20 MPa. • liquefied (petroleum) gases, typically butano- propane mixture; • conductor that easily liquefied at a pressure of 1.6 MPa. The gas-air mixture are higher than Benzi- novodachne, antiknock properties, minor toxicity of exhaust gases. Due to the lack of condensed- fixing vapour precluded the washout of the oil film from the walls liners and pistons of the engine. Decreases the degree of sludging the formation on the walls of the combustion chambers of the cylinders. Results Tata the life of the engine is increased 1.5—2 times. The disadvantages of LPG installations can be attributed- ti: • increased requirements for fire and explosion; • reduction of engine power due to the lower, than gasoline, the combustion rate of gas-air mix si; • loss of load due to Mas- intensity of LPG installations. Engines operating on gaseous fuel, the creation are based on gasoline. Carburettor engines about- raduyutsya special LPG installation, but kept tween the ability to run on gasoline. Gas installation compressed natural gas co- worth from: • cylinders for gas storage; • expenditure valve; • filling valves; • heater; • high pressure reducer; • solenoid valve with filter; • reducer low pressure; • carburetor-mixer. On a basic car model ZIL-138 installed eight cylinders for storage of compressed gas grouped- tion in two groups. Cylinders made of seamless steel pipes with wall thickness up to 7 mm. They are locat- us under the superstructure. Using expendable valve, the gas can flow into system mu of power from one group or from both at once. Charging of cylinders with gas produced via water the valve. From the cylinders through the valves consumable gas record- et in heater, which prevents the system from metering- Xania, possible due to the expansion of the gas in the reducer high pressure. For heating use the heat of the exhaust gas. Reducer of high pressure gas enters the solenoid valve, which opens- Xia when starting the motor for by-passing the gas in gear low pressure. The low pressure reducer has two stages, and the pressure tion of gas in it falls with a small excess at- atmospheric pressure. Next, the gas enters the carb- mixer, and the idle is directly in the throttle space. The low pressure reducer IG- selects a decisive role in the power system. It reduces the pressure of the gas supplied to the carburetor-mixer, the pre- Siluet gas for cooking gas-air mixture necessary necessary composition and off gas pipeline in the East the line of the engine. Engine running on gasoline is provided by standards the combined power of gasoline, which the Autonomous linking Chen to the carburetor-mixer. LPG installation LP gas consists of: • gas cylinder with a gas valve; • filling, main and consumable Venti- LEU; • the evaporator; • reducer; • mixer. |
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