Patent · US Active

Internal combustion engine having valve seat pockets

US10975799B2 · kind B2 · utility

1Cited by

1References

14Claims

0Family size

Assignee

MAN Truck &Bus AG · DE

Inventors

Dominik Renner · Ansbach, DE
Thomas Malischewski · Heilsbronn, DE

Key dates

Filing date	Oct 5, 2018
Grant date	Apr 13, 2021
Priority date	—
Expiry date	Nov 24, 2038

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An internal combustion engine for a vehicle is provided, having at least one cylinder with a first gas exchange inlet valve, a second gas exchange inlet valve, a first gas exchange outlet valve, a second gas exchange outlet valve, and a piston with a piston crown which has a plurality of valve seat pockets. In each case one valve seat pocket is provided for the first gas exchange inlet valve, the second gas exchange inlet valve, the first gas exchange outlet valve and the second gas exchange outlet valve, and the plurality of valve seat pockets have at least partially different depths. Alternatively, one valve seat pocket is provided for the first gas exchange inlet valve and the first gas exchange outlet valve, and no valve seat pocket is provided for the second gas exchange inlet valve and/or for the second gas exchange outlet valve.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.