- Home
- Technology
- Hydrogen Combustion Engine
Hydrogen Combustion Engine
CMB.TECH has developed a dual fuel hydrogen technology.

The principle of the technology is presented in the following 5 steps.
Step 1:
Hydrogen is injected in the aspirated air during the intake stroke.
Step 2:
During the compression stroke Hydrogen mixes into a homogeneous mix.
Step3:
A small amount of diesel pilot fuel is injected into the combustion chamber just before top dead centre.
Step 4:
Diesel auto-ignites due to the high temperature and pressure and co-combusts with all the hydrogen, forcing the piston down during the power stroke.
Step 5:
The cylinder is cleaned during the exhaust stroke. Due to hydrogen co-combustion, the NOx and CO2 emissions have strongly reduced in the exhaust gases.