Cylinder head device for an internal combustion engine and internal combustion engine having such a cylinder head device

Patent metadata

Field	Value
Publication number	US-10087879-B2
Application number	US-201314433462-A
Country	US
Kind code	B2
Filing date	Sep 26, 2013
Priority date	Oct 12, 2012
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

A cylinder head device for an internal combustion engine includes a cylinder head having a first receiving region arranged on an inlet side of the cylinder head for at least one first camshaft to be mounted on the cylinder head, and at least one second receiving region arranged on an outlet side of the cylinder head which faces away from the inlet side for at least one second camshaft to be mounted on the cylinder head. The receiving regions are separated from one another at least in certain areas by an intermediate wall of the cylinder head which is arranged at least in certain areas between the receiving regions. A duct element, by means of which at least one element of the cylinder head device can be supplied with lubricant, runs in the intermediate wall.

First claim

The invention claimed is:

1. A cylinder head device for an internal combustion engine, the cylinder head device comprising:
a cylinder head comprising
at least one first receiving region arranged on an inlet side of the cylinder head on which at least one first camshaft is mounted on the cylinder head, and
at least one second receiving region arranged on an outlet side of the cylinder head facing away from the inlet side on which at least one second camshaft is mounted on the cylinder head,
wherein the first and second receiving regions are separated from one another at least in certain areas by at least one intermediate wall of the cylinder head, the at least one intermediate wall is arranged at least in certain areas between the receiving regions,
wherein at least one duct element, by means of which at least one element of the cylinder head device is supplied with lubricant, runs in the at least one intermediate wall,

at least one transfer element formed separately from the cylinder head, the at least one transfer element having at least one channel fluidically connected to the at least one duct element in the at least one intermediate wall of the cylinder head, and by means of which the lubricant is fed to the at least one element;
wherein at least in a sub-region, the at least one duct element is a riser having a first duct region which, with respect to a flow direction of the lubricant, extends through the riser in a vertical direction of the cylinder head device from bottom to top, and a second duct region adjacent to the first duct region and fluidically connected to the first duct region, into which the first duct region opens out and which, with respect to the flow direction of the lubricant, extends in the vertical direction of the cylinder head device from top to bottom;
wherein the first duct region runs at an angle to the vertical direction and encloses an acute angle with the vertical direction and wherein the second duct region runs at least substantially in the vertical direction.

2. The cylinder head device of claim 1 , wherein, at least in certain areas, the at least one transfer element encompasses one of the at least one first and second camshafts mounted on the cylinder head, wherein the at least one channel of the transfer element is fluidically connected to at least one second channel running in the one of the at least one first and second camshafts, by means of which the lubricant is fed to the element.

3. The cylinder head device of claim 1 , wherein the at least one element supplied with lubricant is a phase adjustment device actuatable by means of the lubricant, and by means of which a phase adjustment of at least one of the at least one first and second camshafts can be effected in order to set control times of gas exchange valves.

4. The cylinder head device of claim 3 , wherein the phase adjustment device is supplied via the at least one second channel running in the one of the at least one first and second camshafts with the lubricant, by means of which the phase adjustment device is actuated.

5. The cylinder head device of claim 1 , wherein the at least one element supplied with lubricant is a hydraulically actuatable valve play compensation element configured to compensate for a valve play of at least one gas exchange valve.

6. The cylinder head device of claim 1 , wherein at least one third duct region of the duct element branches off the second duct region.

7. The cylinder head device of claim 6 , wherein the third duct region is arranged in an end region of the second duct region.

8. An internal combustion engine for a motor vehicle, the internal combustion engine comprising:
a plurality of cylinders; and
at least one cylinder head device for at least one of the plurality of cylinders, the at least one cylinder head device comprising
a cylinder head comprising
at least one first receiving region arranged on an inlet side of the cylinder head on which at least one first camshaft is mounted on the cylinder head, and
at least one second receiving region arranged on an outlet side of the cylinder head facing away from the inlet side on which at least one second camshaft is mounted on the cylinder head,
wherein the first and second receiving regions are separated from one another at least in certain areas by at least one intermediate wall of the cylinder head, the at least one intermediate wall is arranged at least in certain areas between the receiving regions,
wherein at least one duct element, by means of which at least one element of the cylinder head device is supplied with lubricant, runs in the at least one intermediate wall,

at least one transfer element formed separately from the cylinder head, the at least one transfer element having at least one channel fluidically connected to the at least one duct element in the at least one intermediate wall of the cylinder head, and by means of which the lubricant is fed to the at least one element;

wherein at least in a sub-region, the at least one duct element is a riser having a first duct region which, with respect to a flow direction of the lubricant, extends through the riser in a vertical direction of the cylinder head device from bottom to top, and a second duct region adjacent to the first duct region and fluidically connected to the first duct region, into which the first duct region opens out and which, with respect to the flow direction of the lubricant, extends in the vertical direction of the cylinder head device from top to bottom;
wherein the first duct region runs at an angle to the vertical direction and encloses an acute angle with the vertical direction and wherein the second duct region runs at least substantially in the vertical direction.

Assignees

• Daimler Ag

Inventors

• Haefner Jochen
• Jecker Cecile

Classifications

• F01L2001/34423

  Details relating to the hydraulic feeding circuit · CPC title

• F02F1/38 Primary

  the cylinder heads being of overhead valve type · CPC title

• F01L1/3442

  using hydraulic chambers with variable volume to transmit the rotating force · CPC title

• F01L1/24

  by fluid means, e.g. hydraulically · CPC title

• F01L2001/0537

  Double overhead camshafts [DOHC] · CPC title