Abstract
Full-cycle simulations of a spark ignition engine running on a primary reference fuel have been performed using a two-zone model. A detailed kinetic mechanism is taken into account in each of the zones, while the propagating flame front is calculated from a Wiebe function. The initial conditions for the unburned gas zone were calculated as a mixture of fresh gas and rest gas. The composition of the burned gas zone at the end of the last engine cycle, including nitric oxide emissions, was taken as rest gas.
The simulations confirm that the occurrence of autoignition in the end gas is sensitive on the amount of nitric oxide in the rest gas of the spark ignition engine. The comparison of autoignition timings calculated for a single-cylinder test engine are getting more accurate if the nitric oxide in the initial gases is taken into account.
The simulations confirm that the occurrence of autoignition in the end gas is sensitive on the amount of nitric oxide in the rest gas of the spark ignition engine. The comparison of autoignition timings calculated for a single-cylinder test engine are getting more accurate if the nitric oxide in the initial gases is taken into account.
| Original language | English |
|---|---|
| Title of host publication | SAE Paper 2002-01-2699 |
| Publication status | Published - 2002 |
| Event | SAE Powertrain & Fluid Systems Conference & Exhibition, 2002 - San Diego, United States Duration: 2002 Oct 21 → 2002 Oct 24 |
Conference
| Conference | SAE Powertrain & Fluid Systems Conference & Exhibition, 2002 |
|---|---|
| Country/Territory | United States |
| City | San Diego |
| Period | 2002/10/21 → 2002/10/24 |
Subject classification (UKÄ)
- Energy Engineering