Our profession, the development of CNG bi-fuel powertrains
National CNG based engine (EF7)
This engine is designed to have optimal performance with natural gas (CNG) as a first fuel and gasoline is considered as the second fuel in it. The EF7 engine has a maximum power of 103 hp and maximum torque equal to 137 Nm with the use of CNG fuel and can fulfill the EURO 5 emission level. The new technologies which is used in the design and manufacturing of this engine are as follows:
- High pressure gas injection technology
- Using optimal compression ratio
- Using Continuous Variable Valve Timing (CVVT) technology
- Equal durability in using either fuels (CNG or Gasoline)
Why should CNG be used?
Lower fuel costs
156(g/km)
CO2 emission rate
Lower particulate number (compared to gasoline)
Power and Torque Curves (EF7 CNG based Engine)
- Power[kw]
- Torque[N.m]
