The emission control and air conditioning schematic circuit of Toyota Land Cruiser 70 light-duty off-road vehicle

Published:2011/8/9 19:57:00 Author:Sophia | Keyword: The emission control and air schematic conditioning, Toyota Land Cruiser 70 light-duty off-road vehicle | From:SeekIC

Air conditioning control circuit is mainly to control electromagnetic clutch 52 and the air conditioning blowers 56, 59. Seen from the figure, the blower can be controlled by manpower, and only the blower 56 operating under the premise of air conditioning, compressor 52 are allowed to work. Air-conditioning amplifier's input signal: A / C thermostat 53, air-conditioning coolant temperature switch 50 (relay 54 is to cut off the circuit of solenoid valve 51, which makes the fast idle speed changed to normal idle speed), dual pressure switch (low voltage lines switches and high-pressure pipeline switch) 48, which can be connected to air-conditioning amplifier control circuit, the supply current flows from F8.) The Actuating mechanism of air-conditioning amplifier 55 is the compressor magnetic clutch actuator 52 and fast idle solenoid valve. When the current heater motor switch 61 is Connected, if the ambient temperature is above 10 ℃ or domain thermostat temperature is above 5 ℃, and pipeline pressure is normal, then the amplifier connects to the compressor magnetic clutch and air conditioning and refrigeration cycle to make the engine more fuel fast idle. Until the engine temperature rises to a predetermined value, the thermostat switch is closed; the solenoid valve 51 is off, the engine returns to normal idle speed.



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