A direct injection spark ignition (DISI) gasoline engine with a new stratified charge combustion concept has been launched on the Japanese domestic market. This new concept consists of two components. First, a thin fan-shaped spray from a slit nozzle enables wide spray dispersion, moderate spray penetration and a fine atomization. Second, a shell-shaped piston cavity allows better mixture formation, however avoiding distinct charge motions (such as tumble or swirl). Simple intake port geometry increases the full load performance. The combustion concept, at the same time allows stratified charge to be used at higher load and at higher engine speeds and improves the homogeneous charge combustion. A new 3L in-line 6 gasoline engine with this combustion concept showed 20% better fuel economy than a 3L port fuel injection (PFI) engine (λ=1 feed back system) under the Japanese 10-15 mode.
Slit Nozzle Injector for A New Concept of Direct Injection SI Gasoline Engine
Sae Technical Papers
CEC/SAE Spring Fuels & Lubricants Meeting & Exposition ; 2000
2000-06-19
Conference paper
English
Slit nozzle injector for a new concept of direct injection spark ignition gasoline engine
Automotive engineering | 2000
|Fuel spray simulation of slit nozzle injector for direct-injection gasoline engine
Automotive engineering | 2002
|Fuel Spray Simulation of Slit Nozzle Injector for Direct-Injection Gasoline Engine
SAE Technical Papers | 2002
|Visualization analysis of fuel flow inside slit nozzle for direct injection SI gasoline engine.
Automotive engineering | 2003
|Visualization Analysis of Fuel Flow inside Slit Nozzle for Direct Injection SI Gasoline Engine
British Library Conference Proceedings | 2003
|