Mitsubishi Motors 4G9 - Manual (Page 4)

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4G9 ENGINE (E-W) - General Information
11A-0-4
4G93
Descriptions 4G93-SOHC 4G93-DOHC 4G93-DOHC-GDI
Type In-line OHV, SOHC In-line OHV, DOHC In-line OHV, DOHC
Number of cylinders 4 4 4
Combustion chamber Pentroof type Pentroof type Pentroof type
Total displacement dm 3 1,834 1,834 1,834
Cylinder bore mm 81.0 81.0 81.0
Piston stroke mm 89.0 89.0 89.0
Compression ratio 10.0, 9.5 10.5 11.7* 1 , 12.0* 2
Valve timing Intake
valve
Opens
(BTDC)
14_ 20_ 15_
Closes
(ABDC)
50_ 60_ 56_
Exhaust
valve
Opens
(BBDC)
58_ 61_ 55_
Closes
(ATDC)
10_ 15_ 15_
Lubrication system Pressure feed, full-
flow filtration
Pressure feed, full-
flow filtration
Pressure feed, full-
flow filtration
Oil pump type Trochoid type Trochoid type Trochoid type
Cooling system Water-cooled forced
circulation
Water-cooled forced
circulation
Water-cooled forced
circulation
Water pump type Centrifugal impeller
type
Centrifugal impeller
type
Centrifugal impeller
type
* 1 : Up to 1999 model
* 2 : From 2000 model
PWEE9502-G E May 2000 Mitsubishi Motors Corporation Revised