D902-E4B
GENERAL SPECIFICATION
- Engine model
- D902-E4B
- Emission regulation
- EPA/CARB Tier 4 (NRTC/NTE test mode) + EU Stage V
- Type
- Vertical, water cooled 4-cycle diesel engine
- Cylinders
- 3
- Bore and stroke
- mm (in)
- 72.0 x 73.6 (2.83 x 2.90)
- Displacement
- L (cu.in)
- 0.898 (54.80)
- Aspiration
- Naturally aspirated
- Aftertreatment
- -
- Rated output / speed*1
- kW (HP) / rpm
- 18.5 (24.8) / 3600
- Maximum torque / speed*1
- Nm (lb-ft) / rpm
- 56.1 (41.4) / 2600
- Combustion system
- Indirect injection
- Fuel system
- In-line pump
- Length x Width x Height*2
(without aftertreatment unit) - mm (in)
- 434 x 401 x 544 (17.1 x 15.8 x 21.4)
- Length x Width x Height*3
(with aftertreatment unit) - mm (in)
- -
- Dry weight
- kg (lb)
- 72 (159)
- Specifications are subject to change without notice.
Dimensions and dry weight are according to Kubota's standard specification.
Dimensions and weight depend on completed specifications. - 1: SAE J1995 gross intermittent
*2: Exclude cooling fan and exclude aftertreatment unit
*3: Exclude cooling fan and include aftertreatment unit on engine
18.5 kW @ 3600 rpm
Photographs may show non-standard equipment.
DIMENSIONS
Dimensions and weight depend on composed specifications.
PERFORMANCE CURVES
FEATURES and BENEFITS
Emissions
The Kubota Super Mini Series features compact multi-cylinder
liquid cooled industrial diesel engines which comply with EPA /
CARB Tier 4 emissions regulations.
Durable Power
The D902 engine delivers the highest output among the Kubota
Super Mini Series engines.
By expanding the bore and stroke, Kubota has increased engine
displacement while maintaining the same footprint as the D722
engine. The use of an extended shallow oil pan keeps the engine
height lower than that of the D722, providing a compact engine
package.
The cooling water passages between the cylinder bores features
Kubota’s original casting technology as a countermeasure against
the heat load caused by high power density, providing both superior
endurance and reliable engine performance.
This engine offers a seamless transition from E3 to E4 by maintaining
the same level of performance and physical characteristics.
Alternative fuel engines WG972-G (gasoline) and WG972-GL
(dual fuel: gasoline / LPG) are available with the same footprint
as the D902 engine.
Clean and Quiet Power
Kubota’s original E-TVCS (Three Vortex Combustion System) has
been further improved for cleaner emissions. The piston recess
has been optimized to achieve lower particulate matter (PM)
levels at an extremely small size. The half-float valve cover and
MoS2-coated pistons reduce noise levels and decrease vibrations
transmitted from the valve area.
