# US 11,111,874 B2 · Cylinder housing for a reciprocating-piston internal combustion engine

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- Number: US 11,111,874 B2
- Document ID: US11111874B2
- Status: Granted
- Kind: B2
- Application number: 16/349,880
- Filed: 2017-10-06
- Published: 2019-09-05
- Granted: 2021-09-07
- Earliest claimed: 2016-11-15
- Assignees: Daimler AG
- Applicants: Daimler AG
- Inventors: Thomas Behr; Klaus Geiger; Udo Grimmer; Tobias Hanschke; Martin Hartweg; Volker Lagemann; Harald Scheib; Sebastian Schiefer; Martin Stroeer; Silvia Tomaschko
- Web page: https://patentgrep.com/patent/US11111874B2

## CPC

- F02F 1/004: {Cylinder liners (F02F1/08, F02F1/16 take precedence)}
- F02F 1/18: Other cylinders
- F02F: CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES

## Abstract

A cylinder housing for a reciprocating-piston internal combustion engine, in particular of a motor vehicle, includes a first cylinder which is delimited by a first cylinder barrel and a second cylinder which is delimited by a second cylinder barrel. The cylinders differ from one another with respect to their respective inner contour formed by the respective cylinder barrels.

## Claims

### Claim 1

A cylinder housing of a reciprocating internal combustion engine, comprising:
a first cylinder delimited by a first cylinder barrel; and
a second cylinder delimited by a second cylinder barrel;
wherein the first cylinder has a first internal contour formed by the first cylinder barrel and the second cylinder has a second internal contour formed by the second cylinder barrel;
wherein the first internal contour is configured to differ from the second internal contour in a cold state of the reciprocating internal combustion engine such that a shape of the first internal contour and a shape of the second internal contour differ from each other and differ from a desired target shape in terms of a respective diameter and/or a respective honing shape of the respective cylinder barrels in the cold state of the reciprocating internal combustion engine, and such that in a fired operation of the reciprocating internal combustion engine the shape of the first internal contour and the shape of the second internal contour correspond to the desired target shape.