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The idling
Pneumatic increase speed to idle
| Fig. 4.73. Driving vacuum lines and valves: 1 - control module works the air conditioning compressor; 2 - smooth switching control module (ARA); 3 - control module exhaust (ARF); 4 - a control unit with a heating system; 5 - gas pedal; 6 - coolant temperature sensor; 7 - filter choke; 8 - the flywheel; 9 - speed sensor gear of a starter; 10 - bypass pressure control valve; 11 - bypass valve exhaust; 12 - the exhaust manifold; 13 - the suction pipe; 14 - vacuum pump; 15 - pump; 16 - the valve exhaust system; 17 - the case of the pressure control valve; 18 - thermostatic valve; A - blowing; In - side users; C - Stop the engine
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The system works through a vacuum chamber to control idling pump. When the coolant temperature is less than + 30 ?� C, the idle speed is increased by approximately 100 min -1. The diagram in Fig. 4.73 shows the operation of the thermo. When the valve is opened, the negative pressure acts on the diaphragm. No-load speed remains constant. When the valve is closed, the vacuum chamber is communicated via a tube vented to the atmosphere, and the number of revolutions increases. Check pneumatic speed idling Checking is to control the tightness of the individual pipes by blowing. If damaged, the vacuum chamber, it must be replaced.
1. Disconnect the pipe from the vacuum chamber. When a working diaphragm and the suction purge is possible. 2. When the coolant temperature is below 30 ?� C, the valve should be slightly opened, at a higher temperature - closed. The valve is located on the left side of the cylinder head. 3. When a pressure of 0.5 bar in the conduit to the vacuum chamber idle speed should increase at 100 min -1. Electronic control idle speed To adjust the idle speed sensor gear starter measures the exact number of revolutions of the crankshaft, and gives a signal to the control unit. The control unit monitors the difference desired and the current value and adjusts the number of revolutions, depending on engine load. When the coolant temperature is below +60 ?� C idle speed is increased by the specified parameters. For this purpose-driven pulse voltage elektromatnit that affects the control pump. To protect against surges in the control unit is installed 10-amp fuse. Check the electronic speed control at idle Improper operation of idling or stop it after starting the engine, check the electronic adjustment system
1. Make sure that the drive is installed correctly accelerator - at the released pedal drive (cable) pivot arm should be in a free state. 2. Leave the engine warmed up to work at idle and disconnect the plug magnet about 3 seconds. When disconnecting the plug should briefly turns increase. 3. If the speed is not changed, briefly connect to the electromagnet 12 V (maximum of 3 to avoid burnout of the coil). If the speed does not increase, replace the electromagnet.
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