GENERAL
1-7
4. Main specifications
This specifications may differ from your engine specifications.
Table 1-1 Main specifications(1 / 3)
Engine type S3Q2 S3Q2-T
Main
specifications
Model
Vertical type, Water-cooled,
4-stroke cycle diesel engine
Number and arrangement of cylinders 3 cylinder in-line
Combustion type Swirl chamber type
Valve mechanism Overhead
Cylinder bore × stroke 88 × 103 mm [3.46 × 4.06 in.]
Displacement 1.879 L [0.5 U.S.gal.]
Compression ratio 22 : 1
Fuel used
JIS K2204, Diesel oil or its equivalent
(ASTM D975, etc.).
Firing order 1 - 3 - 2
Direction of rotation Counterclockwise when viewed from flywheel
Dimensions
Overall length 608 mm [23.94 in.] 608mm [23.94 in.]
Overall width 492 mm [19.37 in.] 540mm [21.26 in.]
Overall height 633 mm [24.92 in.] 696 mm [27.40 in.]
Dry weight
Approx. 160 kg
[352.7 lb]
Approx. 165 kg
[363.8 lb]
Basic engine
Cylinder Type Dry (integral with cylinder block)
Piston ring Number of rings
Compression rings: 2
Oil ring (w/expander): 1
Valve timing
(when warm)
Inlet valve
Open BTDC 30°
Close ABDC 50°
Exhaust valve
Open BBDC 74°
Close ATDC 30°
Starting system Electric
Starting aid system Glow plug
Fuel system
Fuel injection pump
Type In-line (Bosch A type)
Plunger diameter ø 6.5 mm [0.26 in.]
Fuel feed pump Type Bosch, piston type
Governor
Speed control system Centrifugal type
Type Bosch RSV type
Fuel injection nozzle
Nozzle type Bosch, Throttle type
Number of spray holes 1
Spray hole diameter ø 1.0 mm [0.04 in.]
Spray angle 0°
Valve opening pressure 13.73 MPa {140 kgf/cm²} [1991 psi]
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