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Home >> Infiniti >> 2022 >> QX55 Essential >> Repair and Diagnosis >> Engine Mechanical >> Engine Lubrication System >> System Description >> Description >> Engine Lubrication System Schematic
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Engine Lubrication System Schematic

GNSAWBIA0187Z-187Courtesy of NISSAN NORTH AMERICA, INC.

1.

Oil pan

2.

Oil strainer

3.

Oil pump

4.

Engine oil pressure control solenoid valve

5.

VCR actuator

6.

VCR actuator pin

7.

Oil filter

8.

Oil cooler

9.

Engine oil pressure sensor

10.

Engine oil temperature sensor

11.

Exhaust valve timing control solenoid valve

12.

Camshaft sprocket (EXH-VTC)

13.

Camshaft (INT)

14.

Camshaft sprocket (INT-VTC)

15.

Valve lifter (INT)

16.

Timing chain tensioner

17.

Vacuum pump

18.

Valve lifter (EXH)

19.

Camshaft (EXH)

20.

High pressure fuel pump

21.

Timing chain oil jet

22.

Turbocharger

A.

Oil passage bypass

B.

Oil injection

C.

To oil pan

D.

Relief valve

E.

VCR actuator shaft bearing (RR)

F.

VCR actuator shaft bearing (FR)

G.

VCR actuator shaft

H.

Harmonic drive

J.

Main gallery

K.

Camshaft journal [INT (No. 1)]

L.

Camshaft journal [EXH (No. 1)]

M.

Camshaft journal [INT (No. 5)]

N.

Camshaft journal (INT)

P.

Camshaft journal [EXH (No. 6)]

Q.

Camshaft journal (EXH)

R.

Piston oil jet

T.

Main bearing

U.

Crankshaft

V.

L-link bearing

W.

L-link

X.

U-link bushing (lower)

Y.

Piston

AA.

Main bearing cap (No. 1/3/5)

AB.

Control shaft bearing (No. 1/3/5)

AC.

Control shaft

AD.

Control shaft bearing (No. 2/4)

AE.

C-link big end bearing

AF.

C-link small end bushing