5.22.1. General information

Fig. 5.14. ZMZ-514 engine (left-side view): 1 – a branch pipe of the water pump of a supply of cooling liquid from a radiator; 2 – water pump; 3 – pump of the hydraulic booster of steering; 4 – sensor of temperature of cooling liquid of a control system of the engine; 5 – sensor of the index of temperature of cooling liquid; 6 – thermostat case; 7 – sensor of an alarm lamp of emergency pressure drop of oil; 8 – cover of an oil-filling mouth; 9 – a forward arm for raising of the engine; 10 – handle of the index of level of oil; 11 – ventilation hose; 12 – recirculation valve; 13 – final branch pipe of a turbocompressor; 14 – final collector; 15 – heat-insulating screen; 16 – turbocompressor; 17 – heater tube; 18 – coupling case; 19 – an opening cap under an adjusting pin of a bent shaft; 20 – stopper of a drain opening of an oil case; 21 – a hose of discharge of oil from a turbocompressor; 22 – a delivery tube of oil to a turbocompressor; 23 – crane of discharge of cooling liquid; 24 – inlet branch pipe of a turbocompressor

The diesel ZMZ-514 engine installed on the UAZ Hunter car is shown in fig. 5.14 and 5.15.     

Fig. 5.15. ZMZ-514 engine (right-side view): 1 – starter; 2 – filter of thin purification of fuel; 3 – traction relay of a starter; 4 – cover of the drive of the oil pump; 5 – back arm of raising of the engine; 6 – receiver; 7 – fuel-supply lines of high pressure; 8 – fuel pump of high pressure (FPHP); 9 – TNVD back support; 10 – point of fastening of a "mass" wire of the controller of a control system of the engine; 11 – a hose of a supply of cooling liquid to liquid oil heat exchanger; 12 – union of the vacuum pump; 13 – generator; 14 – vacuum pump; 15 – cover of the lower gidronatyazhitel; 16 – sensor of provision of a bent shaft; 17 – an oil supply hose to the vacuum pump; 18 – sensor of the index of pressure of oil; 19 – oil filter; 20 – branch pipe of the liquid and oil heat exchanger of removal of cooling liquid; 21 – a hose of discharge of oil from the vacuum pump; 22 – oil case; 23 – amplifier of a case of coupling

The block of cylinders is cast from special high-strength cast iron that gives to an engine design rigidity and durability.
The channels for cooling liquid forming a cooling shirt are executed on all height of the block, it improves cooling of pistons and reduces deformation of the block from an overheat. The shirt of cooling is open in the top part towards a block head.
In a case of the block of cylinders the nozzles intended for cooling of pistons with oil are established.
The head of the block of cylinders is cast from aluminum alloy. In it inlet and final valves are installed. About four valves are the share of each cylinder: two inlet and two final. Inlet valves are located on the right side of a head, and final — with left. The drive of valves is carried out by two camshafts through hydropushers. Application of hydropushers excludes need of adjustment of gaps for the drive of valves as they automatically compensate a gap between cams of camshafts and cores of valves. In a head of the block of cylinders there are seats under nozzles and glow plugs.
Camshafts are manufactured of the low-carbon alloyed steel. Cams of camshafts diversified, are located asymmetrically concerning the axes. Marking with a branding is applied on back end faces of shaft: on inlet to a shaft - "VP", on final to a shaft - "VYP".
At each shaft five basic necks. Shaft rotate in the support located in a head of the block of cylinders and closed by the covers chiseled for a single whole with a head therefore covers of support of camshafts are not interchanged.
Camshafts refrain from axial movements by the persistent semi-washers established in bores of covers of forward support and the entering speakers parts in pro-points on the first basic necks of camshafts.
For exact installation of phases of gas distribution in the first necks of camshafts technological openings with precisely set angular arrangement concerning a profile of cams are executed.
At assembly of the drive of camshafts their exact situation is reached thanks to the clamps established in technological openings on the first necks of camshafts through openings in a forward cover.
Technological openings are necessary also for control of phases of gas distribution in use of the engine.
On the first transitional neck of camshafts there are two turnkey lyska for keeping of camshafts at installation of asterisks.
Pistons are also cast from aluminum alloy. On the bottom of the piston marking of dimensional group of diameter of a skirt of the piston (letter "A", "B", "Y") is cast and the arrow necessary for the correct orientation of the piston at installation in the engine is put (the arrow has to be directed towards a forward end face of the block of cylinders). In the bottom of a skirt of the piston dredging which provides a piston divergence with a cooling nozzle is executed. In a head of the piston three flutes are executed: in two top compression rings, in lower — oil scraper are established. The flute under the top compression ring is made in the strengthening insert of nirezistovy cast iron. On each piston three rings are established: two compression and one oil scraper. Compression rings are cast from cast iron.
The opening axis for a piston finger is displaced on 0,5 mm to the right side (in the direction of the movement of the car) from the average plane of the piston.
Rods steel, shod, with a double-T section core. In the top head of a rod the bronze plug is pressed. The lower head of a rod is supplied with the cover attached by two bolts. Nuts of conrod bolts have the self-stopped carving and therefore in addition are not stopped. Covers of rods process assembled with a rod therefore they cannot be rearranged from one rod on another. On rods and their covers numbers of the corresponding cylinders are beaten out. For cooling of the bottom of the piston with oil in a core of a rod and the top head openings are executed. In the lower head of a rod establish thin-walled inserts.
The bent shaft is cast from high-strength cast iron. The shaft has eight counterbalances. From axial movement he is kept by the persistent semi-washers established on an average neck. The flywheel is attached to the back end of a bent shaft. The expansion plug and the bearing of a sock of a main shaft of the transmission are inserted into an opening of a flywheel.