2.7. Control system, fuel system and system of decrease in toxicity
Check of technical condition (Check of frequency of rotation of the crankshaft of the engine idling)
On cars the electronic control system of the engine, that is system of the distributed fuel injection is applied. Is called distributed injection because for each cylinder fuel is injected by a separate nozzle. The system of injection of fuel allows to reduce toxicity of the fulfilled gases at improvement of riding qualities of the car.
There are systems of the distributed injection with feedback and without it. In the present section only the short description of the general principles of the device, work and repair is given
systems of injection of fuel.
Engines of Hyundai have a control system with feedback. At it in system of release catalytic converter and the sensor of concentration of oxygen which provides feedback is established. The sensor traces concentration of oxygen in the fulfilled gases, and the controller on its signals supports such ratio air/fuel which ensures the most effective functioning of converter.
In system of injection without feedback converter and the sensor of oxygen are not established, and for adjustment of concentration WITH serves in the fulfilled gases WITH - a potentiometer. In this system also the system of catching of vapors of gasoline is not applied.
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Fig. 2.206. The scheme of a control system of the engine of 1,6 l with the OBD-II system
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Fig. 2.207. The scheme of a control system of the engine of 1,8 l with the OBD-II system
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Fig. 2.208. The scheme of a control system of the l engine 1,6 and 1,8 without the OBD-II system
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Fig. 2.209. The scheme of a control system of the l engine 1,6 and 1,8 for ethylated gasoline
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