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Cylinder head for a self-igniting internal combustion engine

A cylinder head, internal combustion engine technology, applied in the direction of engine cooling, cylinder, cylinder head, etc., can solve problems such as damage to the cooling effect, and achieve the effect of prolonging service life, reducing flow loss, and increasing operating temperature

Inactive Publication Date: 2010-06-23
MAN B & W DIESEL AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This impairs the cooling effect achieved

Method used

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  • Cylinder head for a self-igniting internal combustion engine
  • Cylinder head for a self-igniting internal combustion engine

Examples

Experimental program
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Embodiment Construction

[0042] figure 1 An exemplary embodiment of a cylinder head 10 according to the invention is shown, which is shown in section in the region of the exhaust gas channel 12 . In the position shown, the exhaust valve 30 is seated in its seat region 31 . The exhaust channel is thus closed. In addition to the seat region 31 , the valve also includes a valve cone 32 and a valve foot 33 , which are mounted in the cylinder head outside the exhaust gas channel.

[0043] The cylinder head 10 itself is cooled by cooling water which circulates in a cooling jacket 13 which is only partially shown. The valve seat is formed by a separate valve seat ring 14 arranged in the cylinder head 10 , which is likewise water-cooled.

[0044] In the exemplary embodiment shown, the cooling air arrangement comprises two cooling air channels 41 and 42 which are introduced into the cylinder head 10 itself by means of bores in such a way that they run linearly through the cylinder head 10 . Cooling air duc...

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Abstract

The invention relates to a cylinder head for a self-igniting internal combustion engine, specifically, the cylinder head (10) has at least one exhaust channel (12) capable of being closed by an exhaust valve (30), and comprises a cooling air duct assembly having at least one cooling air duct (41, 42) for loading the cold air to the exhaust valve. The cooling air duct of the cooling air duct assembly in the cylinder head is configured to have approximately linear and / or approximately constant or continuously increased cross section.

Description

technical field [0001] The invention relates to a cylinder head (Zylinderkopf) according to the preamble of claim 1, in particular for a self-ignition (selbstzuendende) internal combustion engine, which has at least one exhaust gas channel (Auslasskanal), which can be Closed by an exhaust valve (Auslassventil); and with a cooling air channel assembly (Kuehlluftkanalanordnung) with at least one cooling air channel (Kuehlluftkanal) for use of cold air or other cooling gases (Kuehlgas) Loading of the exhaust valve (Beaufschlagung). Background technique [0002] The exhaust gases produced during combustion in internal combustion engines can reach very high temperatures. The exhaust gases flowing around the exhaust valves of such internal combustion engines are also a corrosive atmosphere, so there is a risk of thermal corrosion on the exhaust valves. Corroded valves can subsequently cause engine damage. [0003] In order to avoid this effect, the engine is often operated at a...

Claims

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Application Information

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IPC IPC(8): F02F1/28
CPCF02F1/28F01P1/02F01L3/22F01P1/06F01L3/16F02F1/4264
Inventor R·平特纳格尔M·瓦伦塔
Owner MAN B & W DIESEL AS
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