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.
Two-stroke engine with disintegrated cycle
Ein Zweitaktmotor mit getrenntem Arbeitstakt
1992
5 Seiten, 10 Bilder, 3 Quellen
Conference paper
English
Zweitaktmotor , Kompression , Zylinder , Verbrennungskammer , Steuerung , Gasströmung , Durchgangsventil , Kolben (Maschinenelement) , Kraftstoff , Umweltschutz , Kostenersparnis , Prototyp , Simulationsmodell , Arbeitstakt , Ansaugsystem , Gasgemisch , Rauminhalt , Plungerkolben , Regelkreis , Leistung
SAE Technical Papers | 1990
|Automotive engineering | 1990
|Methods of repairing disintegrated or poor concrete
Engineering Index Backfile | 1926
Two stroke cycle engine cylinder
Automotive engineering | 1989
|Four Stroke Cycle Engine Development
Automotive engineering | 1979
|