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ALL-ROUND
SOLUTIONS,

ALL-ROUND
INNOVATIONS

Electronically-Controlled Small Diesel EngineD902-K

China's national smoke regulations Category III*
*China's regulations for vehicles

LIMITS AND MEASUREMENT METHODS FOR EXHAUST SMOKE FROM
NON-ROAD MOBILE MACHINERY EQUIPPED WITH DIESEL ENGINES

Value

Cost, Quality, and Environmental Friendliness
This single engine will revolutionize your equipment across the board.

The new D902 electronically-controlled engine has been developed to comply with the latest emission regulations (output less than 19 kW) around the world. In addition to EPA Tier 4 (North America), Stage V (Europe), and China IV standards, the engine also complies with the most stringent of China's national smoke regulations, Category III.
D902-K is an all-in-one electronically-controlled engine that brings together Kubota's unique technologies to meet a wide range of needs, facilitating easy model upgrades without increasing development costs for the customer. With just one engine, we are reforming all aspects of equipment across the board, from industrial machinery to construction machinery.

Performance

Black smoke emissions can be reduced to an invisible level during start-up, acceleration, and sudden load. This is made possible by the new TVCR combustion system, which combines the original E-TVCS combustion system with a unique common rail developed specifically for small engines.
While maintaining its compact size and ease of installation, the system contributes to clean exhaust gas, low fuel consumption, and highly efficient operations, as well as ICT needs such as automation, unmanned operations, and hybridization.

Zero Visible Smoke
Low fuel consumption
Compatibility
Drivability
Integrated control

Zero Visible Smoke*1

The new combustion method TVCR
reduces black smoke to an invisible level

Through adoption of the new combustion method TVCR, the D902-K has been improved to produce clean exhaust gas with no visible black smoke during engine start-up, acceleration, and sudden load.

*1:Opacimeter less than 0.8m-1

Suppress
Black
Smoke
TVCR
Technology

TVCR Technology

TVCR Technology

LOW FUEL CONSUMPTION

Fuel efficiency improved by about 5% compared to conventional model

RATED

Down 5%

Down 6%

D902-K

D902-K

Conventional
model

Conventional
model

Kubota's unique technology has overcome the obstacles to improving fuel efficiency in this class. In addition, the engine has high output and torque per displacement, combining both fuel efficiency and performance.

A comparison of the size of the D902-K
and the D902 conventional model

A comparison of the size of the D902-K and the D902 conventional model

COMPATIBILITY

Facilitating easy model upgrades

The same external dimensions, air intake and exhaust positions, engine mount position, and PTO (power take-off) as the current model make it easy to upgrade. Kubota's engine, which is electronically controlled and yet so compact and lightweight, will contribute greatly to the development and design of your machinery.

DRIVABILITY

Supports highly efficient and stable operations

The electronic control allows greater flexibility in setting the performance curve, enabling a broader output flat range in the rated range than with the conventional model.
As a result, the rotation fluctuation can be suppressed in response to workload fluctuations, contributing to an improved working environment for the operator.

SUPPRESS ROTATION REDUCTION

SUPPERES ROTATION REDUCTION

INTEGRATED
 / INTELLIGENT CONTROL

Facilitating highly integrated control
of the engine and machine

INTEGRATED / INTELLIGENT CONTROL

Intercommunication between the engine's ECU (electronically controlled unit) and the main machine's ECU enables integrated control of the mounted equipment. The D902-K with electronic control is therefore the optimal engine for equipment that requires advanced control, such as automatic/unmanned driving and hybrid systems. It is well equipped to respond to the growing need for digitalization.

TVCR

Optimized, maximized engine drive in any environment,
enabled by the revolutionary combination of Kubota's unique combustion technology and electronic control.

TVCR

Proprietary Combustion Technology One-of-a-Kind Electronically Controlled Fuel Injection

The TVCR is Kubota's original combustion system.
The new combination of Kubota's original E-TVCS combustion system (new three-jet combustion system) and an electronically controlled fuel-injection system that differs from conventional electronically controlled governors enables injection control optimized to the operating conditions.

Optimization of RPM and fuel injection amount

The amount of fuel injected at startup is optimized to minimize smoke generation.

Optimization of RPM and fuel injection amountOptimization of RPM and fuel injection amount

Customization

Kubota provides invaluable engines, and grow as our customers do

Kubota can offer the optimal engine platform to meet customers' individual requirements in terms of applications, product sales regions, and development products. Thanks to our extensive installation track record and development experience, we are also able to solve a wide variety of application-specific issues.

One Source, Multiple SolutionsOne Source, Multiple Solutions

TVCR Lineup

TVCR engine addresses a wide range of challenges

Kubota has developed an extensive and complete line-up of Kubota engines, available in a wide range of outputs to meet the needs of various markets. Our engines for the OEM market have outputs ranging from 4 kW to 157.3 kW, with a lineup available for each of our series.

D902-K
TVCR
Displacement:
0.898 L
Cylinders:
3
Output:
18.5 kW
Control:
Electronic control
D1105-K
TVCR
Displacement:
1.123L
Cylinders:
3
Output:
18.5 kW
Control:
Electronic control

General Specifications

Engine model
D902-K
Emission regulations
EPA Tier 4 (North America), Stage V (Europe), and China IV standards
Type
Vertical water-cooled 4-cycle diesel engine
Cylinders
3
Bore and stroke
72.0 × 73.6mm
Displacement
0.898L
Aspiration
Naturally aspirated
Aftertreatment
Rated output/rpm*1
18.5kW(24.8HP) / 3600rpm
Maximum torque/rpm*1
56.1Nm(41.4lb-ft) / 2600rpm
Combustion and fuel system
TVCR
Length x width x height*2
434 × 389 × 544mm
Dry weight*2
72kg

*1: Gross intermittent SAE J1995

*2: Excluding cooling fan

Specifications and appearance are subject to change without prior notice.
Dimensions and dry weight are according to Kubota's standard specification.
Actual dimensions and weight depend on completed specifications.

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