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An Investigation of a New Type Direct-injection Stratified- Charge Combustion System for Gasoline Engines
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Abstract
A new type direct-injection stratified-charge combustion system for gasoline engines is developed by the authors. In the system, gasoline is directly injected into a cylinder near the end of compression stroke by a nozzle with the injection holes unequally spaced on its tip. The angles among sprays in the vicinity of spark plug are small, and become larger downstream along the direction of air swirl motion. Therefore the circularly concentration stratification form rich to lean of air-fuel mixture is mechanically realized to ensure the reliable ignition and smooth flame propagation in the inhomogeneous mixture after sparking.
The selection of main parameters of the system, the performance and the combustion characteristics of the engine after optimization of those parameters are introduced in detail in this paper.
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Zhao, H., Yang, X., Zhou, L., and Liu, S., "An Investigation of a New Type Direct-injection Stratified- Charge Combustion System for Gasoline Engines," SAE Technical Paper 961150, 1996, https://doi.org/10.4271/961150.Also In
References
- Alperstein M. et al Texaco's Stratified Charge Engine- Multifuel, Efficient, Clean, and Practical SAE paper 740563
- Hillyer B.J. Wade W.R. Single-cylinder PROCO Engine Studies-Fuel and Engine Calibration Effects on Emissions, Fuel Economy and Octane Number Requirements SAE 780593
- Myake M. Developing a New Stratified-Charge Combustion System With Fuel Injection for Reducing Exhaust Emissions Combustion Science and Technology 1976