Gas engines
WJ POWER GmbH develops and manufactures highly efficient, low-emission and reliable gas base engines for combined heat and power plants in the power range from 20 kW to 250 kW.
About wj power gas engines
Highest efficiency, excellent quality and state-of-the-art technology – that’s what our gas engines for decentralized power generation stand for. They demonstrate their high performance and durability not only in natural gas operation, but also in the use of bio, wood and special gases. Our gas engines impress with efficient efficiencies and comply with the most stringent emission requirements of the legislator.
our engines
All basic engines are optimized for Lambda 1 suction engine operation. Nevertheless, these engines can also be used in special gases, such as biogas, landfill gas, sewage gas or wood gas.
20kW mech. – HMG 410 S
38kW mech. – HMG 320 S
56kW mech. – HMG 434 S
85kW mech. – HMG 634 S
100kW mech. – HMG 645 S
174kW mech. – HMG 420 S
250kW mech. – HMG 660 S
38kW mech.- HMG 320 S 133A
Details
No. of cylinders | 3 |
Bore | 108 mm |
Hub | 120 mm |
Compression | 13:1 |
Mech. Power | 38kW |
Therm. Power | 63kW |
Mech. Efficiency | 34% |
Therm. Efficiency | 56% |
Total efficiency | 90% |
Coupling | SAE3 |
Exhaust outlet | SAE side |
56kW mech.- HMG 434 S 132A
Details
No. of cylinders | 4 |
Bore | 108 mm |
Hub | 134 mm |
Compression | 13:1 |
Mech. Power | 56kW |
Therm. Power | 80kW |
Mech. Efficiency | 38% |
Therm. Efficiency | 55% |
Gesamt Efficiency | 93% |
Coupling | SAE2 |
Exhaust outlet | SAE side |
85kW mech.- HMG 634 S 132A
Details
No. of cylinders | 6 |
Bore | 108 mm |
Hub | 134 mm |
Compression | 13:1 |
Mech. Power | 85kW |
Therm. Power | 123kW |
Mech. Efficiency | 37% |
Therm. Efficiency | 53% |
Gesamt Efficiency | 90% |
Coupling | SAE2 |
Exhaust outlet | SAE side |
100kW mech.- HMG 645 S 132A
Details
No. of cylinders | 6 |
Bore | 111 mm |
Hub | 145 mm |
Compression | 13:1 |
Mech. Power | 100kW |
Therm. Power | 174kW |
Mech. Efficiency | 37% |
Therm. Efficiency | 54% |
Gesamt Efficiency | 91% |
Coupling | SAE2 |
Exhaust outlet | SAE side |
250kW mech.- HMG 660 S 132A
Details
No. of cylinders | 6 |
Bore | 130 mm |
Hub | 160 mm |
Compression | 13:1 |
Our branches
WJ POWER GmbH develops, produces and sells engines, internal combustion engines and other equipment for CHP applications and also provides related services.
WJ POWER GmbH accesses a wide range of knowledge and services from different company divisions. Thanks to scientific cooperations, such as with Karlsruhe University of Applied Sciences, we are able to keep pace with the rapid development of technologies and translate theoretical knowledge directly into innovative customer solutions.
Our last Projects:
11 Mai 2022
Big news at WJ POWER
This package contains a novelty in the gas engine market. More information will follow soon.

Training and development
In our production there was an exchange with the production and development today. Soon available innovations to the product were discussed.
News from
WJ POWER
For the latest information about our HMG gas engines, drive technology and the company WJ POWER, please refer to our blog / news. We will always keep you up to date. If you have any questions, suggestions or feedback, please find our contact form below. We are looking forward to your message.
Powerful gas engines from WJ POWER
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