Stratified and Homogeneous Charge Operation for the Direct Injection Gasoline Engine - High Power with Low Fuel Consumption and Emissions

1997 ◽  
Author(s):  
N. S. Jackson ◽  
J. Stokes ◽  
P. A. Whitaker ◽  
T. H. Lake
Keyword(s):  
Fuel Consumption ◽  
High Power ◽  
Gasoline Engine ◽  
Direct Injection ◽  
Direct Injection Gasoline Engine ◽  
Fuel Consumption And Emissions ◽  
Homogeneous Charge

scholarly journals Research on the effect of different test cycles on low temperature emissions and fuel consumption of Light plug-in hybrid cars

2021 ◽  
Vol 268 ◽  
pp. 01028
Author(s):  
Fan Yang ◽  
Chongzhi Zhong ◽  
Chun Li
Keyword(s):  
Low Temperature ◽  
Fuel Consumption ◽  
Gasoline Engine ◽  
Direct Injection ◽  
Hybrid Car ◽  
Direct Injection Gasoline Engine ◽  
P Cycle

Based on a plug-in hybrid car equipped with a 1.5L turbocharged direct injection gasoline engine, this paper studies the emission and fuel consumption characteristics of the prototype vehicle under three different cycle conditions, WLTC city, WLTC and CLTC-P. The results show that for the four pollutants: CO, THC, NMHC and NOx, WLTC city cycle emissions are the largest, WLTC cycle emissions are the smallest, CLTC-P cycle emissions are the middle. For N2O, WLTC cycle has the largest combined emissions, CLTC-P cycle combined emissions are the smallest, and WLTC city cycle combined emissions are the center. The combined fuel consumption under WLTC city conditions is approximately 1.3 times the combined fuel consumption under the complete WLTC cycle. The combined fuel consumption under CLTC-P conditions is approximately 1.25 times that of the complete WLTC cycle. The first phase of each cycle is the phase with the highest emissions and fuel consumption.

Characteristics Study of Knocking, Fuel Consumption and Emissions with Cooled External EGR on SIDI Turbo Charged Gasoline Engine

2011 ◽  
Vol 66-68 ◽  
pp. 102-107
Author(s):  
Ying Li Zu ◽  
Zheng Xin Zhou ◽  
Hong Yang Yu
Keyword(s):  
Fuel Consumption ◽  
Gasoline Engine ◽  
Direct Injection ◽  
Combustion Process ◽  
Spark Timing ◽  
Study Results ◽  
Combustion Phase ◽  
Variable Valve ◽  
Gas Recirculation ◽  
Fuel Consumption And Emissions

Based on 2.0L spark ignition direct-injection(SIDI) turbo charged gasoline engine with variable valve timing(VVT), the spark timing effects on combustion process, fuel consumption, knock limitation and emissions were studied with external exhaust gas recirculation(EGR) on different loads and speeds. For the purpose of easily comparing data results, the location of 50% mass fraction burned(CA50) was widely used in this paper. The study results show that CA50 is changing linearly with spark timing. To reach the same combustion phase, spark timing need to be further advanced with external EGR. Combustion variability of IMEP(COV) increase sharply with retarding of CA50 with external EGR. The external EGR can greatly improve knock limitation and knock intensity(KI). To reach the best fuel consumption, CA50 need to be advanced to 6 °CA to 8 °CA for both with external EGR and without external EGR. NOx emissions increase with advancing of spark timing. HC show different trends when retarding spark timing with and without external EGR.

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