Analysis of EGR Cyclic Variations in a Direct Injection Gasoline Engine by Using Raman Scattering Method 2002-01-1646
The Raman scattering method has been developed for the simultaneous, cycle by cycle measurement of HC, O2, H2O, and N2 in a direct injection gasoline engine with EGR. By using the Raman scattering method, the effect of EGR on stratified charge combustion can be investigated in a direct injection SI gasoline engine. The results show that (1) at the compression stroke homogeneous EGR gas exists, (2) variation of component mass fraction of EGR (qualitative fluctuation) introduced in the previous combustion cycle is the primary reason for EGR fluctuation, (3) under normal operating conditions, EGR fluctuation (component mass fraction and quantitative fluctuation) doesn't influence on the combustion fluctuation at the stratified charge operation.
Citation: Mori, S. and Shimizu, R., "Analysis of EGR Cyclic Variations in a Direct Injection Gasoline Engine by Using Raman Scattering Method," SAE Technical Paper 2002-01-1646, 2002, https://doi.org/10.4271/2002-01-1646. Download Citation
Author(s):
Sachio Mori, Rio Shimizu
Affiliated:
Toyota Motor Corporation
Pages: 8
Event:
Spring Fuels & Lubricants Meeting & Exhibition
Also in:
Emission Control and Fuel Economy for Port and Direct Injected SI Engines-PT-91, SAE 2002 Transactions Journal of Engines-V111-3