Thermally insulated air inlet system for an internal combustion engine
AssigneeMan Truck & Bus AG
InventorsJens Dietrich, Thomas Malischewski, Marco Tilinski, Steffen Hirschmann
Life of this patent
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Abstract
The disclosure relates to an air inlet system for an internal combustion engine. The air inlet system has a cylinder head having an inlet channel for introducing inlet air into a combustion chamber of the internal combustion engine. The air inlet system has an air supply pipe piece, which is connected to the cylinder head and which at least partially forms an air supply channel, which opens in the inlet channel. The air inlet system additionally has thermal insulation, which is arranged in the air supply channel in order to reduce a heat transfer to the inlet air which flows in the air supply channel.
Claims19
An air inlet system for an internal combustion engine comprising:
- a cylinder head having an inlet channel for introducing inlet air into a combustion chamber of the internal combustion engine;
- an air supply pipe piece, which is connected to the cylinder head and which at least partially forms an air supply channel, which opens in the inlet channel;
- and
- thermal insulation, which is arranged in the air supply channel in order to reduce a heat transfer to the inlet air which flows in the air supply channel, wherein the thermal insulation has an inlay which abuts an inner wall face of the air supply channel, wherein the inlay is constructed as a flexible solid inlay.
A method for producing an air inlet system of an internal combustion engine, comprising:
- casting a cylinder head having an inlet channel and a cast air supply pipe piece, which with the cylinder head forms an air supply channel which opens in the inlet channel, wherein the inlet channel has a combustion chamber opening and the air supply channel has an inlet opening;
- introducing thermal insulation which has a folded inlay liner, through the combustion chamber opening or the inlet opening into the air supply channel, wherein the folded inlay is constructed as a flexible solid inlay;
- and
- unfolding the inlay in the air supply channel so that the inlay is in abutment with an inner wall face of the air supply channel.
A method for producing an air inlet system of an internal combustion engine, comprising:
- casting an air supply pipe piece for mounting on a cylinder head so that an air supply channel which is at least partially formed by the air supply pipe piece opens in an inlet channel of the cylinder head;
- placing or introducing an inlay as thermal insulation liner in the air supply channel, wherein the inlay is constructed as a flexible solid inlay;
- and
- mounting the air supply pipe piece on the cylinder head.
Dependencies are inferred from the claim text.