- Report
- Energy Systems
Combustion System Development for the Next Generation HD Gas Engines
| 2018:477
COSTGAS is a project in Heavy Duty gas engines in which the combustion
system for the next generation gas engines is to be developed. The goal is to
increase the efficiency of the current gas engine platform by 10 percent and
increase the torque by 20 percent. This is done while observing the boundary
conditions of the current Euro VI emissions regulations.
The research was performed on a single cylinder research engine on which different hardware combinations with different variations to the piston and cylinder head was investigated. The results showed an increase in efficiency by up to 10 percent at high load and a potential of 5 percent increase for lower loads. Altering the hardware combinations showed a potential of lowering the emissions from the engine as well.
The large increase in efficiency was reached by using both lean operation methods as well as EGR. The latter not only increased efficiency but reduced the initial NOx that comes under lean operation. The increase in torque was shown to be possible to deliver for certain hardware combinations.