Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for operating an internal combustion engine

A technology of internal combustion engine and operating parameters, applied in the direction of internal combustion piston engine, combustion engine, mechanical equipment, etc., can solve the problems of deterioration of emission characteristics/wear characteristics, impaired running stability, torque fluctuation, etc., to improve running smoothness , cost-saving effect

Active Publication Date: 2018-03-30
ROBERT BOSCH GMBH
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this respect, the described procedure can lead to the operation of some or all cylinders of the internal combustion engine with a non-optimal mixture, which in turn can lead to impaired running smoothness, to torque fluctuations or to deterioration of the emission / wear characteristics

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for operating an internal combustion engine
  • Method for operating an internal combustion engine
  • Method for operating an internal combustion engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] refer to Figures 1 to 3 Exemplary process steps are described for determining a selected set of cylinders of an internal combustion engine for which a measurement injection is to be carried out when carrying out the method according to the invention. For this purpose, a not shown internal combustion engine is assumed with three cylinders for Figures 1 to 3 These are represented by numbers 1 to 3, respectively.

[0032] During operation of the internal combustion engine, all cylinders 1 to 3 are fired during an ignition cycle. For a continuous operation of the internal combustion engine, successive ignition cycles are carried out successively, the ignition cycles being Figures 1 to 3 are shown successively with the symbols A, B, C, D, E in the row marked with reference numeral 10 . Within each ignition cycle 10 , the cylinders are fired successively in sequence 1 , 2 , 3 , so that the sequential firing sequence from left to right shown in row 20 in each case results. ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to a method for operating an internal combustion engine having two or more cylinders which can be supplied with fuel via an injection valve, wherein a method for learning and / or adaptation can be carried out for one cylinder The measured injection of the characteristic variable of the injection valve and in which all cylinders are fired during an ignition stroke. In order to improve the operating characteristics, in this case a measurement injection is carried out for the cylinders which are included in a predefinable selection number selected from all the cylinders.

Description

technical field [0001] The invention relates to a method for operating an internal combustion engine having two or more cylinders which can be supplied with fuel via an injection valve, wherein a metered injection can be carried out for a cylinder in order to determine or use for matching the characteristic parameters of the injection valve. Furthermore, the invention relates to a control and / or regulating device for actuating injection valves of an internal combustion engine having two or more cylinders. Background technique [0002] In order to operate an internal combustion engine with at least two cylinders, the required injection of fuel into the intake pipe assigned to the corresponding cylinder (suction pipe injection) or directly into the combustion chamber of the corresponding cylinder can be carried out. Injection (direct injection). The injection usually takes place by means of an injection valve. In this case, the opening duration of the injector is linked to ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/24F02D41/40
CPCF02D41/2438F02D41/2467F02D41/247F02D41/402Y02T10/40F02D41/30
Inventor K.约斯W.黑斯R.施吕特C.雷施克H.拉普H.哈梅多维克J.克尼希S.维尔特N.居古恩J.洛佩斯劳克H.弗里德曼A.科赫
Owner ROBERT BOSCH GMBH