Title:
内燃機関での圧縮比を制御する方法
Document Type and Number:
Japanese Patent JP2004507651
Kind Code:
A
Abstract:
A method for controlling the compression ratio epsilon in a supercharged combustion engine. The latter is provided with a control device in which a maximum final compression temperature T2,max is ascertained, and, within the framework of a precontrol, an optimum efficiency compression ratio epsilonopt is ascertained. The knock limit is determined from the compression ratio epsilon, to which it corresponds, and which is ascertained from the precontrol. As a function of the efficiency curve in the characteristics map eta=f, a further change occurs in compression ratio gamma or a setting back of the change in compression ratio epsilon. The values learned for epsilon and the ignition angle as a function of the operating point are permanently stored in a characteristics map to which the engine control has access.
Inventors:
Michael Boyerle
Claus Reese-Muller
Claus Reese-Muller
Application Number:
JP2002522651A
Publication Date:
March 11, 2004
Filing Date:
August 29, 2001
Export Citation:
Assignee:
ROBERT BOSCH GMBH
International Classes:
F02P5/15; F02B57/04; F02D15/00; F02D15/02; F02D23/00; F02D35/02; F02D41/00; F02D41/14; F02D43/00; (IPC1-7): F02D15/02; F02D23/00; F02D43/00; F02P5/15
Attorney, Agent or Firm:
Toshio Yano
Einzel Felix-Reinhard
Reinhard Einsel
Einzel Felix-Reinhard
Reinhard Einsel