Lean Combustion in a High Compression Four Stroke Gasoline Engine 810786
To achieve lean combustion in a gasoline engine, a swirl type combustion chamber is placed in the piston top. The compression swirl thereby created makes a rapid combustion possible, which is essential to a lean burn engine.
The experiments are carried out with a single cylinder four stroke engine, mainly at a compression ratio of 13.8:1, and are compared to a Heron-type combustion chamber.
Minimum fuel consumption is obtained at an air-fuel ratio of 19, and as an average, an improvement of approximately 5 per cent is found.
The peak cylinder pressure is reduced in comparison to the Heron chamber at the same compression ratio.
Citation: Herbsleb, K., Lorenzen, L., and Kofoed, E., "Lean Combustion in a High Compression Four Stroke Gasoline Engine," SAE Technical Paper 810786, 1981, https://doi.org/10.4271/810786. Download Citation
Author(s):
K. S. Herbsleb, L. Lorenzen, E. Kofoed
Affiliated:
Laboratory for Energetics Tech. Univ. of Denmark (Copenhagen, Denmark)
Pages: 16
Event:
Passenger Car Meeting & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Lean burn engines
Combustion chambers
Air / fuel ratio
Combustion and combustion processes
Fuel consumption
Engine cylinders
Pistons
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »
