Title:
【発明の名称】火花点火式内燃機関
Document Type and Number:
Japanese Patent JP2582756
Kind Code:
B2
Abstract:
The invention relates to a spark-ignition internal combustion engine having a combustion chamber which, at least in part, presents surface areas (10) which have been treated to reduce the octane number requirement of the engine.
The surface area to be treated may, for example, be either blasted or etched to produce surface depressions, and is then flame sprayed with copper particles to form heat-reflective surfaces. At least this latter method results in solely low-temperature heating of the walls of the combustion chamber, which can be advantageous in the case of diesel engines, but not in the case of Otto-cycle engines.
The improvement in such engines afforded by the invention is that the surface areas (10) are instead provided with at least one layer (12) which presents to the combustion chamber (1) a defining surface (9) which exhibits an extremely low reflectivity to electromagnetic waves in the wavelength range of about 0.2-7.0 microns, and which also results in diffuse reflection of non-absorbed incident waves (14).
Inventors:
YAN UISEN
RENNAATO FUORUSURUNDO
RAORU NIKURASON
RENNAATO FUORUSURUNDO
RAORU NIKURASON
Application Number:
JP26540186A
Publication Date:
February 19, 1997
Filing Date:
November 07, 1986
Export Citation:
Assignee:
OKUTAN AB
International Classes:
F02F3/10; F02B51/00; F02B51/02; F02B77/02; F02F3/14; F02B1/04; F02B3/06; (IPC1-7): F02F3/10; F02F3/14
Domestic Patent References:
| JP52104054U | ||||
| JP57167964U |
Attorney, Agent or Firm:
Akira Asamura (3 outside)