Kubota WG972 E3 - Emission Regulation

0-3
NOTE
• *1 Consult Kubota for further information.
• *2 With Japanese standard natural gas.
The lower heating value : 9699kcal/m3 (1090BTU/ft3).
CAUTION
• This engine is only for stationary use. e.g. oil field and emergency generator.
• The brake horse power is limited under 19kW for emission regulations.
Model
Item
DG972
Type Vertical, water cooled 4-cycle Natural Gas engine
Number of cylinders 3
Cylinder bore x Stroke mm (in) 74.5 (2.93) x 73.6 (2.90)
Total displacement L (cu. in) 0.962 (58.7)
High idle min
-1
(rpm) 3850
Low idle min
-1
(rpm) 1500
Brake horse
power
SAE J1995 Gross
intermittent
kW (HP) /
min
-1
(rpm)
18.7 (25.1) / 3600 *2
SAE J1349 Net
intermittent
17.6 (23.6) / 3600 *2
SAE J1349 Net
continuous
14.5 (19.4) / 3600 *2
ISO Gross 18.7 (25.1) / 3600 *2
ISO Continuous 14.5 (19.4) / 3600 *2
JIS B8002 Net
Intermittent
17.6 (23.6) / 3600 *2
JIS B8002 Continuous 14.5 (19.4) / 3600 *2
Max. torque (SAE J1349)
N·m (ft-lb)
min
-1
(rpm)
55.0 (40.5) / 2400 *2
Compression ratio 9.2
Firing order 1−2−3
Ignition timing B.T.D.C. 15 ° / 1000 min
-1
(rpm) B.T.D.C. 28 ° / 3600 min
-1
(rpm) *1
Ignition system Distributor-less Solid State type
Fuel Natural Gas only *2
Direction of rotation Counter-clockwise from flywheel side
Starting system Electric starting with cell starter
Starter output V-kW 12−1.0
Alternator output V-W 12-480 (Standard)
Lubricating system Forced lubricating by trochoid pump
Lubricating oil Quality better than SH class
Lubricating oil capacity L (U.S. gal) 3.4 (0.90)
Coolant capacity (with radiator) L (U.S. gal) 3.5 (0.92)
Governor type Centrifugal ball mechanical type governor
Dimensions (L x B x H) mm (in)
BBH : 452.5 x 415.4 x 502.53 (17.81 x 16.35 x 19.78)
SAEH : 525.5 x 415.4 x 502.53 (20.69 x 16.35 x 19.78)
Dry weight kg (lb)
BBH : Approx. 72.0 (159)
SAEH : Approx. 95.4 (210)