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A Research on Lean Combustion Control of Prechamber-type Stratified-Charge SI Automobile Engine with Low Nox/Fuel Consumption
Technical Paper
2001-01-1337
ISSN: 0148-7191, e-ISSN: 2688-3627
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Event:
SAE 2001 World Congress
Language:
English
Abstract
This paper analyzes quantitatively mechanisms and its effects of reducing simultaneously NOx/fuel-consumption taking the focus on torch-jet lean combustion control modeling in a pre-chamber type stratified-charge approach with actual Honda CVCC engine test examples.
For analyzing the NO x /fuel consumption reduction mechanism and effects, so-called phenomenological modeling centering around torch-flame-jet behavior are examined with varying the design factors such as auxiliary chamber volume/torch nozzle area.
Then, main physical features and those characteristics of torch-flame-jet such as the combustion pressure rise histories in pre-chamber, penetration length/volume/speed of torch-jet in lean mixture of main chamber, lean mixture shear-flow entrainment and turbulence enhancing effects induced by torch-jet are computed with numerical methods and those various effects for the lean ignition/combustion are examined.
Finally, verifications are attempted by comparison with real engine tested results which specific CO/HC/NOx, fuel-consumption in[gr/PSi-hr] are measured with varying design factors such as pre-chamber volume/torch nozzle area, and trends coincidence are verified sufficiently with computational results.
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Ukawa, H., "A Research on Lean Combustion Control of Prechamber-type Stratified-Charge SI Automobile Engine with Low Nox/Fuel Consumption," SAE Technical Paper 2001-01-1337, 2001, https://doi.org/10.4271/2001-01-1337.Also In
References
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