The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 16, 1999
Filed:
Nov. 10, 1997
Eugene Gordon, Moscow Region, RU;
Alexander Shteinberg, Palo Alto, CA (US);
Yuri Moskvin, Moscow, RU;
Vladislav Zelenov, Moscow, RU;
Other;
Abstract
The invention relates to an ignition system for an internal combustion engine (ICE) that provides fast transfer from a laminar combustion in an ignition kernel to a self-sustaining turbulent flame propagation, thus leading to a reduction in the total time of combustion. The effect is achieved by transiently attacking the ignition kernel with a high-frequency (HF) electromagnetic radiation pulse, which is quasiperiodically modulated with 10-1000 kHz frequency in the initial period of combustion (50-500 .mu.s) following the ignition. Radiation is absorbed by electrons existing only inside the ignition kernel during the initial stage of its development. Due to thermal inertia, the medium perceives the oscillations on the frequency of modulation, whereby the surface of the kernel is developed and is split into separate fractions. This causes transfer from laminar to turbulent bulk combustion. The technique proposed is of an especially great importance for a lean-burn ICE which is normally characterized by low combustion temperature and hindered transition to turbulent flame propagation.