Mitsubishi 4G9 - Page 4

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 2000Mitsubishi Motors Corporation Revised