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

Method for shock-free load switching-on of an internal combustion engine when an activated cylinder is switched off

A technology for internal combustion engines and cylinder bases, applied to internal combustion piston engines, combustion engines, mechanical equipment, etc., can solve problems such as poor running stability and speed fluctuations of internal combustion engines, achieve good running smoothness, avoid torque impact, and prevent torque impact effect

Active Publication Date: 2021-02-26
ROLLS ROYCE SOLUTIONS GMBH
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the running smoothness of the internal combustion engine deteriorates and there is a possibility of speed fluctuations

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 shock-free load switching-on of an internal combustion engine when an activated cylinder is switched off
  • Method for shock-free load switching-on of an internal combustion engine when an activated cylinder is switched off
  • Method for shock-free load switching-on of an internal combustion engine when an activated cylinder is switched off

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] figure 1 The internal combustion engine according to the invention is shown in a simplified plan view, having two cylinder bases 1 , 2 parallel to each other. Six cylinders denoted by A1 to A6 and B1 to B6 are provided in each of the cylinder bases 1 , 2 . exist figure 1 It can be seen in the illustration on the left of , that only three cylinders, namely cylinders B1 , B2 and B3 , are activated. During switching mode, six cylinders, ie cylinders A1 to A6 of cylinder base 1 , are subsequently activated. like in figure 1 All the cylinders A1 to A6 of the cylinder base 1 are deactivated in the left half of the figure, the cylinders of the cylinder base 2 are deactivated.

[0028] figure 2 A graph is shown in which time is plotted on the abscissa, while the ordinate describes the throttle valve position in percentage or the boost pressure in bar. The switching hysteresis when the cylinder is activated or deactivated with the lower limit UG on the left and the upper ...

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 invention relates to a method for operating an internal combustion engine, in particular a gas motor, with two cylinder blocks (1, 2 ) each having a plurality of cylinders (A1 to A6, B1 to B6). ), wherein boost pressure is supplied independently to each cylinder base (1, 2), and the internal combustion engine, in particular a gas motor, has a function for actively actuating at least one cylinder of each cylinder base (1, 2) A device for cylinder cut-off, characterized in that, when changing from an operating state with at least one blocked cylinder to an operating state with at least one other switched-on cylinder, the cylinder is lowered before the other cylinder is switched on. boost pressure.

Description

technical field [0001] The invention relates to a method for shock-free load switching-on when an activated cylinder of an internal combustion engine is switched off. [0002] In particular, the invention relates to a method for operating an internal combustion engine. Background technique [0003] When operating an internal combustion engine, in particular a gas motor, with a plurality of cylinders arranged in two cylinder blocks, it is known that in the lower characteristic map region, especially during idling, a cylinder cut-off is provided for fuel saving and for performance optimization . The cylinder cut-off also serves in particular to reduce harmful substances. Such cylinder cut-off is usually performed in petrol motors. [0004] By switching off individual cylinders, the remaining cylinders must generate the required power of the internal combustion engine. This results in a higher specific cylinder power of the active cylinder. In order to be able to display s...

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): F02D41/00
CPCF02D17/02F02D41/0002F02D41/0082F02D41/0087F02D2250/21Y02T10/40
Inventor T.康拉德W.菲姆尔A.伯恩哈德
Owner ROLLS ROYCE SOLUTIONS GMBH