Abstract
Thermodynamic analysis was conducted on a regulated two-stage turbocharging system of a heavy-duty vehicle. An adiabatic efficiency function of the turbine stage was deduced. A calculation method for mass flow and expansion ratio of high pressure and low pressure turbine was established. Calculation results show that mass flow and expansion ration of high pressure turbine increase as regulated valve closing when the inlet pressure and temperature is fixed, whereas mass flow and expansion ration of low pressure turbine decrease. The adiabatic efficiency of the turbine stage reaches the lowest value at the 60° opening angle of the valve and the highest value at the fully closed position.
| Original language | English |
|---|---|
| Pages (from-to) | 43-47 |
| Number of pages | 5 |
| Journal | Neiranji Gongcheng/Chinese Internal Combustion Engine Engineering |
| Volume | 29 |
| Issue number | 1 |
| Publication status | Published - Feb 2008 |
Keywords
- Adiabatic efficiency
- IC engine
- Mass flow
- Regulated two-stage turbocharging system
- Turbine stage