4.10. Lubrication system

Lubricant of the engine is carried out under pressure created by the gear oil pump given from a bent shaft. The lubrication system includes, besides, an oil filter and the reducing valve which limits oil pressure.

Fig. 2.72. Details of the lubrication system of GA14DE and GA16DE engines: 1 — an oil filter; 2 — the probe for check of level of oil; 3 — the oil pressure sensor; 4 — the plug of fastening of an oil filter; 5 — the directing probe tube for check of level of oil; 6 — a forward cover of the drive of camshafts; 7 — the conducted gear wheel of the oil pump; 8 — the leading gear wheel of the oil pump; 9 — a cover of the oil pump; 10 — the plug of the drive of the oil pump; 11 — a sealing ring; 12 — an oil receiver; 13 — a plunger of the reducing valve; 14 — a spring; 15 — a stopper of the reducing valve; 16 — an oil case; 17 — a stopper of a drain opening; 18 — the block of cylinders

Fig. 2.73. SR20DE engine lubrication system details: 1 — a cover of the drive of camshafts; 2 — a cover of the oil pump; 3 — the screw of fastening of a cover of the oil pump; 4 — a bolt of fastening of a cover of the oil pump; 5 — a nut of fastening of an oil receiver; 6 — a sealing ring; 7 — an oil receiver with the mesh filter; 8 — a bolt of fastening of an oil receiver; 9 — the leading gear wheel; 10 — the conducted gear wheel; 11 — a plunger of the reducing valve; 12 — a spring; 13 — a sealing ring; 14 — a stopper of the reducing valve

The device of the lubrication system is shown in fig. 2.72 and 2.73.

The oil pump of gear type is installed in a forward cover of the drive of the mechanism of gas distribution.

On the SR20DE engine the oil heater for additional cooling of oil is installed.

Fig. 2.74. Placement of the sensor of pressure of oil

The sensor of pressure of oil (fig. 2.74) is screwed in the back plane of the block of cylinders on the right side from an oil filter. The alarm lamp of pressure of oil lights up at oil pressure drop lower than 0,2 kgfs/cm2.

The oil filter of 15208-H8903 Nissan engines non-demountable, is established from the back party of the block of cylinders. Over the plug of fastening of an oil filter there is perepuskny a valve which works in case of a contamination of an oil filter. Capacity of the filter is 0,4 l. When replacing oil the oil filter is replaced.