Development of Combustion System for a 1-Liter Advanced Turbocharged Gasoline Direct Injection 3-Cylinder Engine

2016 ◽  
Author(s):  
Chen Yang ◽  
Haiyuan Cheng ◽  
Zizhu Fan ◽  
Jiandong Yin ◽  
Yuan Shen ◽  
...  
Keyword(s):  
Direct Injection ◽  
Gasoline Direct Injection ◽  
Combustion System

Investigations on Low Pressure Gasoline Direct Injection for a Standard GDI Combustion System

2010 ◽  
Author(s):  
Stephan Schmidt ◽  
Martin Joyce ◽  
Jonathan Wall ◽  
Alexander Trattner ◽  
Roland Kirchberger ◽  
...  
Keyword(s):  
Direct Injection ◽  
Low Pressure ◽  
Gasoline Direct Injection ◽  
Combustion System

Study of Multimode Combustion System With Gasoline Direct Injection

2006 ◽  
Vol 129 (4) ◽  
pp. 1079-1087 ◽  
Author(s):  
Zhi Wang ◽  
Jian-Xin Wang ◽  
Shi-Jin Shuai ◽  
Yan-Jun Wang ◽  
Guo-Hong Tian ◽  
...  
Keyword(s):  
Fuel Injection ◽  
Direct Injection ◽  
Spark Ignition ◽  
Gasoline Direct Injection ◽  
Compression Ignition ◽  
Combustion System ◽  
Stratified Charge ◽  
Part Load ◽  
Valve Overlap ◽  
Homogeneous Charge

In this paper, a multimode combustion system was developed in a gasoline direct injection engine. A two-stage fuel-injection strategy, including flexible injection timings and flexible fuel quantity, is adopted as a main means to form desired mixture in the cylinder. The combustion system can realize five combustion modes. The homogeneous charge spark ignition (HCSI) mode was used at high load to achieve high-power output density; stratified charge spark ignition (SCSI) was adopted at intermediate load to get optimum fuel economy; stratified charge compression ignition (SCCI) was introduced at transient operation between SI and CI mode. Homogeneous charge compression ignition (HCCI) was utilized at part load to obtain ultralow emissions. Reformed charge compression ignition (RCCI) was imposed at low load to extend the HCCI operation range. In SI mode, the stratified concentration is formed by introducing a second fuel injection in the compression stroke. This kind of stratified mixture has a faster heat release than the homogeneous mixture and is primarily optimized to reduce the fuel consumption. In CI mode, the cam phase configurations are switched from positive valve overlap to negative valve overlap (NVO). The test results reveal that the CI combustion is featured with a high gradient pressure after ignition and has advantages in high thermal efficiency and low NOx emissions over SI combustion at part load.

Combustion System Optimization of a Gasoline Direct Injection Engine

2011 ◽  
Vol 354-355 ◽  
pp. 419-428
Author(s):  
Li Yan Feng ◽  
Chun Hua Zhang ◽  
Jiang Ping Tian ◽  
Wu Qiang Long ◽  
Jun Li ◽  
...  
Keyword(s):  
Fuel Injection ◽  
Direct Injection ◽  
System Optimization ◽  
Gasoline Direct Injection ◽  
Combustion System ◽  
Charge Motion ◽  
Mixture Formation ◽  
Direct Injection Engine ◽  
Gasoline Direct Injection Engine ◽  
Optimal Injection

With the purpose of optimizing the combustion system of a homogeneous charged gasoline direct injection engine, its working process was simulated with a 3-D CFD software package. The authors investigated the influence of injection timings and combustion chamber shapes on the charge motion, fuel injection and their influence on fuel-air mixture formation. With the comparisons of fuel-air mixture quality and combustion processes between two typical injection timings, the optimal injection strategy was chosen. To further improve the mixture quality, configuration on piston crown was optimized and analysis on mixture formation processes of the new configurations was made. Simulation results indicate that the new configurations have faster fuel evaporation rate and better mixture homogeneity.

SANDVIK PRESSURFECT

Alloy Digest ◽  
2015 ◽  
Vol 64 (1) ◽  
Keyword(s):  
High Pressure ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Direct Injection ◽  
Heat Treating ◽  
Gasoline Direct Injection ◽  
Fuel System ◽  
Bend Strength ◽  
Low Carbon ◽  
Steel Company

Abstract Sandvik Pressurfect is an austenitic chromium-nickel stainless steel with low carbon content used for high-pressure gasoline direct injection (GDI) fuel system. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and bend strength. It also includes information on corrosion resistance as well as heat treating and machining. Filing Code: SS-1195. Producer or source: Sandvik Steel Company.

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