US5235938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine having an induction conduit for the induction of fresh air
Assignee: Mercedes Benz Group AG
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Filing: 1992-05-28
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Granted: 1993-08-17
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Expires: 2012-05-28
Abstract
Abstract An internal combustion engine has an induction conduit for the induction of fresh air. A section of the induction conduit extends over the cylinder head cover. In order to achieve the simplest and most operationally reliable engine space ventilation possible, the induction conduit section is provided with at least one connection stub pipe which protrudes through an opening provided in the cylinder head cover into a camshaft space. The camshaft space is connected to the induction conduit in an advantageously simple manner.
Inventors
- 👤 Gerhard Haussmann
- 👤 Achim Guggenmos
- 👤 Heiko Gensert
- 👤 Rolf Zeller
- 👤 Helmut Seitz
- 👤 Klaus Kofahl
- 👤 Joachim Minich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:04
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/10; F02M35/10209; F02M35/10222; F01; F01M; F01M13/00; F01M13/04; F01M13/0416; F02F; F02F7/00; F02F7/006; F02M35/10242; F02M35/10288; F02M35/104; F01M2013/0488
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
136 words
An internal combustion engine having an induction conduit common to cylinders of the engine for the induction of fresh air into the cylinders, comprising a cylinder head cover covering a camshaft space at a top portion of the internal combustion engine, a section of the common induction conduit extending over the cylinder head cover, wherein the induction conduit section has at least one connection stub pipe protruding in a straight line from a lower wall of the induction conduit section though an opening provided in the cylinder head cover into the camshaft space, a bellows-like sealing element is pressed into the opening so as to be operatively arranged between the cylinder head cover and the stub pipe and is provided with a radially displaceable sealing lip in contact with an outer portion of the stub pipe.
Claim 2
Dependent Claim
136 words
An internal combustion engine having an induction conduit common to cylinders of the engine for the induction of fresh air into the cylinders, comprising a cylinder head cover covering a camshaft space at a top portion of the internal combustion engine, a section of the common induction conduit extending over the cylinder head cover, wherein the induction conduit section has at least one connection stub pipe protruding in a straight line from a lower wall of the induction conduit section though an opening provided in the cylinder head cover into the camshaft space, a bellows-like sealing element is pressed into the opening so as to be operatively arranged between the cylinder head cover and the stub pipe and is provided with a radially displaceable sealing lip in contact with an outer portion of the stub pipe.
Claim 3
Dependent Claim
20 words
The internal combustion engine according to claim 1, wherein the connection stub pipe is formed on the induction conduit section.
Claim 4
Dependent Claim
45 words
The internal combustion engine according to claim 1, wherein the cylinder head cover has at least one raised section enclosing a ventilation space, a precipitation plate separating the ventilation space from the camshaft space, and the connection stub pipe is connected to the ventilation space.
Claim 5
Dependent Claim
39 words
The internal combustion engine according to claim 1, wherein a lower wall section of the induction conduit is configured to form a ventilation duct connected via a gap to the induction conduit at a downstream end of the section.
Claim 6
Dependent Claim
72 words
The internal combustion engine according to claim 4, wherein the lower wall section of the induction conduit is offset towards the center of the induction conduit in a region of the connection stub pipes, and a cap located within the extent of the induction conduit covers the lower wall section, the connection stub pipes being provided in the cap and the ventilation duct being bounded by the wall section and the cap.
Claim 7
Dependent Claim
26 words
The internal combustion engine according to claim 5, wherein the gap is located at a distance from the cap at the downstream end of the section.
Claim 8
Dependent Claim
20 words
The internal combustion engine according to claim 6, wherein the connection stub pipe is formed on the induction conduit section.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-08-16 | 1997-02-15 | 1997-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-16 | 2001-02-15 | 2001-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-16 | 2005-02-15 | 2005-08-17 | $7700.00 | Window Closed / Lapsed |