The Institute of Internal Combustion Engines and Thermodynamics at Graz University of Technology has developed a LPDI (low pressure (5bar) direct injection) combustion system for 50cm3 3 two-stroke engines during the last years. The 50 cm3 two-stroke engine is a specific European engine class. World-wide the 125 cm3 class is more important. In order to investigate the potential of higher displacement engines equipped with the LPDI combustion process, a demonstrator engine with 250 cm3 has been developed. The results of this demonstrator from the engine test bench and from the chassis dynamometer are discussed to show the potential of this two-stroke technology. In order to ease the interpretation, the results of a homogenously scavenged two-stroke engine and of a naturally aspirated four-stroke engine serve as reference. The results show that the LPDI technology is a real alternative to expensive four-stroke engines. The high efficiency and the very low emissions are of special interest for the consumption sensitive Indian market, especially in high population urban areas with big problems due to high air pollution.
High efficient 125-250 cm3 LPDI two-stroke engines, a cheap and robust alternative to four- stroke solutions?
Hocheffiziente 125-250 cm<sup>3</sup> Niederdruck-Zweitaktmotoren mit Direkteinspritzung, eine billige und robuste Alternative für Viertakt-Lösungen
2010
8 Seiten, 13 Bilder, 12 Quellen
(nicht paginiert)
Conference paper
English
SAE Technical Papers | 2010
|Air Cooled 50cm3 Scooter Euro 4 Application of the Two-Stroke LPDI Technology
SAE Technical Papers | 2014
|High Efficiency, Modular Four-stroke Engines
Online Contents | 2016
|German four-stroke oil engines
Engineering Index Backfile | 1925
|Two-stroke and four-stroke engines for railway traction
Engineering Index Backfile | 1950