Sealing assembly comprising a cylinder head, a cylinder head gasket and a crankcase
AssigneeMan Truck & Bus AG
InventorsArmin Berner, Thomas Leitel, Walter Schibalsky
Life of this patent
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Abstract
The present disclosure relates to an internal combustion engine for a motor vehicle. The internal combustion engine has a cylinder head, a crankcase and a cylinder head gasket. The cylinder head, the cylinder head gasket and the crankcase form a sealing region for sealing at least one combustion chamber. A first recess is arranged within the sealing region and at a distance from the at least one combustion chamber. A first leakage gas passage extends from the first recess to a first surface exposed to the environment of the internal combustion engine or to a ventilation passage of the internal combustion engine.
Claims21
An internal combustion engine for a motor vehicle, comprising:
- a cylinder head;
- a crankcase;
- a cylinder head gasket, which is arranged between the cylinder head and the crankcase, wherein the cylinder head, the cylinder head gasket, and the crankcase form a sealing region for sealing at least one combustion chamber of the internal combustion engine;
- a first recess, which is arranged within the sealing region and at a distance from the at least one combustion chamber;
- and
- a first leakage gas passage, which extends from the first recess to a first surface exposed to the environment of the internal combustion engine or to a ventilation passage of the internal combustion engine,
- wherein:
- the first recess is provided in a sealing surface of the crankcase;
- or
- the first recess is provided in a sealing surface of the cylinder head.
A cylinder head gasket, comprising:
- at least one combustion chamber opening;
- an outer peripheral surface;
- a first sealing surface for sealing with respect to a crankcase or a cylinder head;
- a first screw hole, which is arranged within the first sealing surface at a distance from the at least one combustion chamber opening;
- and
- a first leakage gas passage, which extends from the first screw hole to the outer peripheral surface or to a ventilation opening of the cylinder head gasket.
A cylinder head, comprising:
- at least one combustion chamber surface for delimiting at least one combustion chamber;
- an outer peripheral surface;
- a sealing surface for sealing with respect to a cylinder head gasket;
- a first recess, which is arranged within the sealing surface at a distance from the at least one combustion chamber surface, wherein the first recess is a screw hole or a closed casting core hole;
- and
- a first leakage gas passage, which extends from the first recess to the outer peripheral surface or to a ventilation passage of the cylinder head, wherein the first leakage gas passage is designed as a depression which extends in the sealing surface, and wherein the cylinder head is a single-cylinder cylinder head or multi-cylinder cylinder head for an internal combustion engine.
A crankcase for an internal combustion engine comprising:
- at least one combustion chamber;
- an outer peripheral surface;
- a sealing surface for sealing with respect to a cylinder head gasket;
- a first recess, which is arranged within the sealing surface at a distance from the at least one combustion chamber, wherein the first recess is a screw hole or a closed casting hole;
- and
- a first leakage gas passage, which extends from the first recess to the outer peripheral surface or to a ventilation passage of the crankcase, wherein the first leakage gas passage is designed as a depression which extends in the sealing surface.
A motor vehicle or a commercial vehicle, comprising:
- an internal combustion engine, including:
- a cylinder head;
- a crankcase;
- a cylinder head gasket, which is arranged between the cylinder head and the crankcase, wherein the cylinder head, the cylinder head gasket and the crankcase form a sealing region for sealing at least one combustion chamber of the internal combustion engine;
- a first recess, which is arranged within the sealing region and at a distance from the at least one combustion chamber;
- and
- a first leakage gas passage, which extends from the first recess to a first surface exposed to the environment of the internal combustion engine or to a ventilation passage of the internal combustion engine, wherein the first leakage gas passage is designed as a depression,
- wherein the crankcase further includes:
- at least one combustion chamber surface for delimiting the least one combustion chamber;
- an outer peripheral surface;
- a crankcase sealing surface for sealing with respect to a cylinder head gasket;
- a first recess, which is arranged within the crankcase sealing surface at a distance from the at least one combustion chamber surface, wherein the first recess is a screw hole or a closed casting core hole;
- and
- a first leakage gas passage, which extends from the first recess to the outer peripheral surface or to a ventilation passage of the cylinder head,
- wherein the first leakage gas passage is designed as a depression which extends in the crankcase sealing surface, and
- wherein the cylinder head is a single-cylinder cylinder head or multi-cylinder cylinder head for an internal combustion engine.
A method for discharging leakage gas or creeping gas, coming from a combustion chamber of an internal combustion engine from a sealing region between a cylinder head, a cylinder head gasket and a crankcase of the internal combustion engine for sealing the combustion chamber, comprising:
- collecting the leakage gas in at least one recess formed within the sealing region;
- and
- guided discharging of the leakage gas out of the at least one recess outside the sealing region into an environment of the internal combustion engine or into a ventilation system of the internal combustion engine,
- wherein:
- the at least one recess is provided in a sealing surface of the crankcase;
- or
- the at least one recess is provided in a sealing surface of the cylinder head.
Dependencies are inferred from the claim text.