Compression phase of the I.C. engine cycle was transmitted from the cylinder to its external intake system. Combustion chamber is thus filled with the pre-compressed mixture. Control of the gas flowing from the chamber to the cylinder space is controlled by a special transflow valve or by the engine piston alternatively. Volume of the tubular combustion chamber can be altered even during the operation of the engine and this is performed by a special plunger, which displacement is linked with the main control loop of the engine. Alteration of the combustion chamber volume introduces overexpansion at partial engine load. Cyclic combustion variations of the tubular shaped combustion chamber, as well as its tendency to knock was observed on a model engine and have given promising results. In spite of great efforts that have been made during the last ten years in the development of conventional two-stroke engines, the required results have not been obtained. Working concept was mainly based on the simplicity of design. Sophisticated but more expensive technical solutions that could better satisfy the demands of the modern vehicle engines, i.e.: fuel economy, environment protection etc. unfortunately exceed the advantages of the simplicity of its design. Sometimes it is reasonable to sacrifice some cost-effectiveness to satisfy better performances of the engine. However, extra costs should be fully justified through all the development phases: from the basic principles, modeling and necessary performance tests to the construction of the prototype.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Two-stroke engine with disintegrated cycle


    Additional title:

    Ein Zweitaktmotor mit getrenntem Arbeitstakt


    Contributors:


    Publication date :

    1992


    Size :

    5 Seiten, 10 Bilder, 3 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    S.I. Version Engine with Disintegrated Process-Expectancies Based on Model Computations and Today Engine Experiences

    Bizjan, Frančišek / Pavletič, Radislav / Sinyavskiy, Vladimir V. | SAE Technical Papers | 1990




    Two stroke cycle engine cylinder

    Kenny,R.G. / Smyth,J.G. / Fleck,R. et al. | Automotive engineering | 1989


    Four Stroke Cycle Engine Development

    Satoh,K. / Niigata Engng.,JP | Automotive engineering | 1979