The device, repair and maintenance service of the car Gazelle ГАЗ-2705

"Gazelle" Gas-2705>> The engine>> Engines ZMZ-4061, ЗМЗ-4063>> The power supply system

The power supply system of engines ZMZ-4061,-4063 basically is similar to the power supply system of engines ZMZ-4025,-4026.

Differences the following:

- The drive of the fuel pump is carried out from the clown fixed on distributive shaft of inlet valves through the intermediate lever;

Fig. 4.29. The scheme of carburettors K-151, К-151Д: I — the management scheme экономайзером compulsory idling (К-151 for ЗМЗ-Д025,-4026); II — the management scheme экономайзером compulsory idling (К-151Д for ЗМЗ-4061, 4063); 1 — the fuel valve; 2 — a float; 3 — a stopper; 4 — an air jet of transitive system; 5 — эмульсионный a jet of transitive system; 6 — the screw of fastening of a spray эконостата the second chamber; 7 — a spray эконостата the second chamber; 8 — an air jet of the main dosing out system of the second chamber; 9 — эмульсионная a tube of the main dosing out system of the second chamber; 10 — small диффузор the second chamber; 11 — the final ball valve of the accelerating pump; 12 — a spray of the accelerating pump; 13 — air заслонка; 14 — small диффузор the first chamber; 15 — an air jet of the main dosing out system of the first chamber; 16 — эмульсионная a tube of the main dosing out system of the first chamber; 17 — the block of an air jet with эмульсионной a tube of system of idling; 18 — эмульсионный a jet of system of idling; 19 — an air jet of system of idling; 20 — the screw of factory adjustment of structure of a mix; 21 — the main fuel jet of the first chamber; 22 — заглушка; 23 — a carburettor cover; 24 — the adjusting screw of restart-up of fuel of system of the accelerating pump; 25 — вытеснитель; 26 — the carburettor case; 27 — the inlet ball valve of the accelerating pump; 28 — a cover of the accelerating pump; 29 — a spring; 30 — the lever of a drive of the accelerating pump; 31 — a diaphragm of the accelerating pump; 32 — the electromagnetic valve; 33 — the electronic block of management; 34 — the controller; 35 — the microswitch; 36 — перепускной a jet of the accelerating pump; 37 — a diaphragm экономайзера compulsory idling; 38 — the valve экономайзера compulsory idling; 39 — a restrictive cap; 40 — the screw of structure of a mix; 41 — the case экономайзера compulsory idling; 42 — the screw of operational adjustment of idling; 43 — a tube to the vacuum-proof-reader; 44 — throttle заслонка the first chamber; 45 — a cam of a drive of the lever of the accelerating pump; 46 — a roller of the lever of the accelerating pump; 47 — the case throttle заслонок; 48 — throttle заслонка the second chamber; 49 — a tube of a supply of depression to the electromagnetic valve; 50 — the calibrated aperture; 51 — a lining; 52 — the main fuel jet of the second chamber; 53 — a tube to the system valve рециркуляции the fulfilled gases; 54 — a supply tube картерных gases; 55 — топливоподводящая a tube; 56 — a drain tube; 57 — the fuel filter

— Carburettor K-151 D (fig. 4.29 see) differs from carburettor K-151 system of switching-off of giving of fuel (экономайзером compulsory idling);

— The system of switching-off of giving of fuel consists of the electromagnetic valve 32 operated the controller of ignition 34, and экономайзера compulsory idling (ЭПХХ). ЭПХХ the electromagnetic valve and the ignition controller — under a cowl, on a guard передка the car takes places on the carburettor;

- The ignition controller operates the electromagnetic valve depending on frequency of rotation of a cranked shaft of the engine and depression in an inlet pipe;

- The system of switching-off of giving of fuel works as follows. At the released pedal of an accelerator and frequency of rotation of a cranked shaft of the engine more than 1650 mines^{-1 the}controller does not submit pressure on the electromagnetic valve therefore through channels of the electromagnetic valve atmospheric air arrives in ЭПХХ which valve blocks the idling channel. In case of infringement of normal work of system of switching-off of giving of fuel (the engine is not started up, the engine «глохнет», the engine works unstably on the minimum frequency врашения idling) it is necessary to be convinced first of all of reliability of electric contacts of elements of system and reliability of connection of a hose of selection of air for the controller.

For check of working capacity of devices EPHH it is necessary to include ignition, to start up and warm up the engine. Then from outside a motor compartment one hand to open throttle заслонки approximately on 1/3 courses, another — to hold the electromagnetic valve. Sharply to release throttle заслонки. Thus the electromagnetic valve should be disconnected, and at decrease in frequency of rotation of a cranked shaft approximately to 1600 mines^{-1 the}electromagnetic valve should join.

The basic dosing out elements of carburettor K-151D are resulted in tab. 4.5.

Adjustment of system of idling is similar to adjustment for engines ZMZ-4025, ЗМЗ-4026, specified in the present management.

GAS a 2705/gazelle