9.1.3. Sensor of position of the camshaft, frequency of rotation and provision of a bent shaft
Fig. 9.1. Control system of the Fenix 5.1 engine: 2/14 — the system relay of the engine; 3/1 — the ignition switch; 4/1 — the block of system management of the Fenix 5.1 engine; 6/13 — the fuel pump; 7/15 — the heated sensor of oxygen (HO2S); 7/21 — the RPM meter (RPM) of the petrol engine;
7/22 — the sensor of absolute pressure in a collector (MAR sensor); 7/23 — the sensor of temperature of cooling liquid of the engine (EST); 7/24 — the sensor of temperature of entrance air; 7/25 — the sensor of provision of a butterfly valve; 7/26 — the sensor of a detonation (KS); 7/27 — the sensor of position of the camshaft; 8/2 — the regulator of idling (IAC); 8/6, 8/7, 8/8, 8/9 — nozzles; 8/12 — the valve of a purge of the coal filter (SR); 10/51 — a precautionary lamp of temperature of exhaust gases; 11/2 — the block of safety locks in passenger salon; 24/20 — the 22-contact socket of a plait of passenger salon (C), a plait of a compartment of the engine (A) (gray); 24/23 — the 22-contact socket of a plait of passenger salon; 24/27 — the 12-contact socket of a plait of a compartment of the engine
(A) — a plait of the module of engine management (ESM); 24/33 — the 4-contact socket of a plait of the module of engine management (unified social tax) (B) (Q); 31/25 — a ground contact under the dashboard
The sensor of position of the camshaft 7/27 (fig. 9.1)
turns on the generator of Hall which signals allow BU to define a running cycle in various cylinders. The rotor of the sensor rotates with the same speed, as the camshaft. With BU the entrance signal of 5 V is given on Hall's generator. When the window in a rotor settles down opposite to Hall's generator, the entrance connects to "weight" and tension of an output signal becomes equal 0 Century. When Hall's generator is shielded by a rotor, tension of an output signal makes 5 Century.
As the frequency of rotation of the camshaft is twice less than the frequency of rotation of a bent shaft, the output signal reaches a maximum and a minimum for two turns of a bent shaft that corresponds to a running cycle in various cylinders of the engine.
The sensor of frequency of rotation and the provision of a bent shaft 7/21 of inductive type gives signals of the frequency of rotation of the engine and the provision of a bent shaft on BU.
Thus, by means of two sensors (the sensor of position of the camshaft and the sensor of provision of a bent shaft) BU defines in what cylinder it is necessary to ignite fuel mix.