Microwave-based ignition principle for gasoline engines with direct injection and spray guided combustion system

MTZ worldwide ◽  
2006 ◽  
Vol 67 (6) ◽  
pp. 29-31 ◽  
Author(s):  
Maurice Kettner ◽  
Andreas Nauwerck ◽  
Ulrich Spicher ◽  
Jürgen Seidel ◽  
Klaus Linkenheil
Keyword(s):  
Direct Injection ◽  
Combustion System ◽  
Gasoline Engines

Simulation of cavitation in outward-opening piezo-type pintle injector nozzles

2008 ◽  
Vol 222 (10) ◽  
pp. 1895-1910 ◽  
Author(s):  
E Giannadakis ◽  
D Papoulias ◽  
A Theodorakakos ◽  
M Gavaises
Keyword(s):  
Bubble Growth ◽  
Large Scale ◽  
Direct Injection ◽  
Bubble Formation ◽  
Needle Valve ◽  
Transient Effects ◽  
Cavitation Model ◽  
Gasoline Engines ◽  
Opening And Closing ◽  
Vapour Film

The onset and development of cavitation in the annular needle seat passage of piezo-driven outward-opening pintle injector nozzles used with spray-guided direct-injection gasoline engines are studied using a Eulerian-Lagrangian computational fluid dynamics cavitation model. Cavitation is formed because of the fluid acceleration taking place at the needle sealing area and it has been found to be affected by its geometric details. Various submodels for nucleation and bubble formation, further bubble growth and collapse, as well as bubble break-up and transport are incorporated into the model. Qualitative model validation is performed against experimental data reported elsewhere in large-scale nozzle replicas, showing similar cavitation patterns to be formed. These consist of vapour pockets rather than a continuous vapour film and develop transiently in a rather chaotic manner around the circumferential needle sealing area, even under stationary geometry and fixed-flowrate conditions. Further transient effects associated with the fast opening and closing of the piezo-controlled needle valve are also presented.

Cavitation in Fuel Injection Systems for Spray-Guided Direct Injection Gasoline Engines

2007 ◽  
Author(s):  
D. Papoulias ◽  
E. Giannadakis ◽  
N. Mitroglou ◽  
M. Gavaises ◽  
A. Theodorakakos
Keyword(s):  
Fuel Injection ◽  
Direct Injection ◽  
Gasoline Engines

Effects of intake swirl on the fuel/air mixing and combustion performance in a lateral swirl combustion system for direct injection diesel engines

Fuel ◽  
2021 ◽  
Vol 286 ◽  
pp. 119376
Author(s):  
Yanlin Chen ◽  
Xiangrong Li ◽  
Shuainan Shi ◽  
Qingxu Zhao ◽  
Dong Liu ◽  
...  
Keyword(s):  
Diesel Engines ◽  
Direct Injection ◽  
Combustion System ◽  
Combustion Performance ◽  
Swirl Combustion ◽  
Air Mixing ◽  
Intake Swirl

A New Direct Injection Combustion System for Heavy-Duty Methanol Engines

1988 ◽  
Author(s):  
Toshiyuki Seko ◽  
Shinji Kobayashi ◽  
Yong Kil Kim
Keyword(s):  
Direct Injection ◽  
Combustion System ◽  
Heavy Duty

Spray Atomization Study on Multi-Hole Nozzle for Direct Injection Gasoline Engines

2013 ◽  
Author(s):  
Motoyuki Abe ◽  
Ehara Hideharu ◽  
Soma Masahiro ◽  
Tohru Ishikawa
Keyword(s):  
Direct Injection ◽  
Spray Atomization ◽  
Gasoline Engines
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