Mitsubishi 4G9 - Page 5

4G9 ENGINE (E–W) – General Information
11A-0-5
PWEE9502-C
E
July 1997Mitsubishi Motors Corporation Revised
4G94
Descriptions 4G94–SOHC 4G94–DOHC–GDI
Type In-line OHV, SOHC In-line OHV, DOHC
Number of cylinders 4 4
Combustion chamber Pentroof type Pentroof type
Total displacement dm
3
1,999 1,999
Cylinder bore mm 81.5 81.5
Piston stroke mm 95.8 95.8
Compression ratio 9.5 10.6
Valve timing Intake
valve
Opens
(BTDC)
2_ 15_
Closes
(ABDC)
58_ 51_
Exhaust
valve
Opens
(BBDC)
58_ 55_
Closes
(ATDC)
10_ 15_
Lubrication system Pressure feed, full-flow filtration Pressure feed, full-flow filtration
Oil pump type Trochoid type Trochoid type
Cooling system Water-cooled forced circulation Water-cooled forced circulation
Water pump type Centrifugal impeller type Centrifugal impeller type
PWEE9502-I
E
Mar. 2001Mitsubishi Motors Corporation Revised