Ricardo combustion technology
Swirl and turbulence-based combustion derived from Ricardo's pioneering research promotes rapid, complete fuel-air mixing for efficient combustion.
Industrial Diesel Power
Reliable Ricardo Diesel Engines
Industrial diesel engines for generator sets, agricultural equipment, marine applications and construction machinery — built on proven Ricardo-based combustion designs.
- 10–350+kW
- Power range
- 22
- Engine models
- 8
- Application fields
- 205g/kW·h
- From (BSFC)
TH4XD-2•295D•2100D•2105D•2110D•495D•K4100D•K4100ZD•K4102D•K4102ZD•R4105D•R4105ZD•R4105AZD•R6105ZD•R6105AZD•R6105AZLD•R6105IZLD•R6110ZLD•R6113ZLD•R6126ZLD•618D•618AD•TH4XD-2•295D•2100D•2105D•2110D•495D•K4100D•K4100ZD•K4102D•K4102ZD•R4105D•R4105ZD•R4105AZD•R6105ZD•R6105AZD•R6105AZLD•R6105IZLD•R6110ZLD•R6113ZLD•R6126ZLD•618D•618AD•
About Ricardo Engines
Proven combustion engineering, built for hard work
Ricardo-based diesel engines pair a well-understood combustion architecture with rugged mechanical construction — the combination behind their reputation for dependable, low-cost industrial power.
High torque
Strong low-speed torque supports sudden load acceptance on generator sets and heavy pulling in agricultural and construction duty.
Low fuel consumption
Efficient combustion keeps brake specific fuel consumption competitive — from around 205 g/kW·h on turbocharged variants.
Easy maintenance
Mechanically governed, direct-injection designs are simple to service in the field with common tools.
Long service life
Rugged cast blocks and replaceable wet cylinder liners on many models make overhaul straightforward.
Worldwide availability
Wide, low-cost spare-parts networks across many markets keep these engines running long after purchase.
Flagship Engine
TH4XD-2
The TH4XD-2 is our flagship four-cylinder, turbocharged and charge-air-cooled (增压中冷) industrial diesel from the Ricardo-based R-series. Rated 110 kW with fuel consumption as low as 205 g/kW·h, it combines strong output for its size with the low-speed torque and serviceability the R-series is known for.
- Rated power
- 110 kW / 148 hp
- Displacement
- 5.32 L
- Configuration
- 4-cyl turbo + IC
- BSFC from
- 205 g/kW·h
Engine Range
Ricardo engine families
From compact twins to heavy six-cylinder power units — explore the full catalogue with search and filtering.
495D
495 / 4-cylinder
- 29.4 kW
- Power
- 4
- Cyl.
- 3.26 L
- Disp.
Generator SetsAgricultureConstruction
View Details
K4100D
K4100 / 4-cylinder
- 30 kW
- Power
- 4
- Cyl.
- 3.61 L
- Disp.
Generator SetsEmergency BackupIndustrial Pumps
View Details
R4105ZD
R4105 / 4-cylinder
- 56 kW
- Power
- 4
- Cyl.
- 4.33 L
- Disp.
Generator SetsEmergency BackupConstruction
View Details
R6105ZD
R6105 / 6-cylinder
- 84 kW
- Power
- 6
- Cyl.
- 6.49 L
- Disp.
Generator SetsEmergency BackupConstruction
View DetailsR6110ZLD
R6110 / 6-cylinder
- 150 kW
- Power
- 6
- Cyl.
- 7.13 L
- Disp.
Generator SetsEmergency BackupMining
View DetailsR6126ZLD
R6126 / 6-cylinder
- 258 kW
- Power
- 6
- Cyl.
- 9.73 L
- Disp.
Generator SetsEmergency BackupMining
View DetailsApplications
Power across industries
Ricardo-based engines are deployed wherever dependable diesel power is needed.
Why Choose Ricardo
Engineered advantages that matter in the field
Fuel Efficient
Optimised combustion for low running cost.
High Torque
Strong pull at low engine speed.
Easy Maintenance
Serviceable with common tools.
Spare Parts Availability
Wide, low-cost global supply.
Reliable Starting
Dependable cold-start behaviour.
Industrial Grade
Built for continuous, hard duty.
Long Lifetime
Economical to overhaul and rebuild.
Worldwide Distribution
Supported across many markets.
Manufacturing
Built by licensed & regional manufacturers
Ricardo-type engines are produced by several manufacturers — including publicly documented producers such as Weifang Tianhe. Manufacturing may vary by engine series and market.
Applications
Power for every industry
Generator sets, agriculture, construction, marine, pumping, mining, oil & gas and standby power — see the engines matched to each application.
Engineering Heritage
The legacy of Sir Harry Ricardo
The Ricardo name traces back to Sir Harry Ricardo, whose combustion research shaped the modern diesel engine. Learn about the history and innovations behind the designs — presented for historical context only.
Read the heritage story