Internal-combustion engines – Frame construction – Horizontal cylinder
Patent
1984-12-07
1986-09-02
Lazarus, Ira S.
Internal-combustion engines
Frame construction
Horizontal cylinder
123 9038, 123DIG6, 123DIG7, F01M 910
Patent
active
046089500
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a machine cover having an inlet duct which is located so as to be easily accessible for service use.
The rocker cover of an internal combustion engine is provided with an oil filler duct that is located so as to be easily accessible for topping-up the engine with oil. However, the best location for the filler duct can vary depending upon the installation in which it is used; for example, in one vehicle engine compartment the filler duct may be most easily accessible at one end of the engine whereas in another vehicle engine compartment in may be most easily accessible at the other end. In order to allow for this situation, engine manufacturer's usually provide a choice of different rocker covers with the filler duct integrally formed therein in a different location in each. However, doing this necessarily involves a cost penalty by increasing the number of different rocker covers that have to be manufactured and stocked.
DISCLOSURE OF THE INVENTION
An object of the present invention is to reduce or overcome this problem by providing a rocker cover that will serve all situations. This is achieved according to one aspect of the invention by providing a cover comprising a main body having two or more apertures closed by interchangeable closures, at least one of which incorporates an inlet duct so that this inlet duct can be located in one of two or more different positions in the cover.
A pair of interchangeable closures for an adjacent pair of apertures may be formed in a single component that is reversible end-to-end and which co-operates with both apertures so that the filler duct is aligned with either one whilst the other aperture is closed. If three or more apertures are equi-spaced along the length of the rocker cover the closure can co-operate with any pair of adjacent apertures so as to align the filler duct with any one of them. One or more closures are provided to close each of the other apertures, one closure being provided for each pair of adjacent apertures if desired.
Alternatively, according to another aspect of the invention, a machine cover comprises a main body having at least one aperture with which a closure incorporating a filler duct is engageable in each of two or more different orientations so that the filler duct can be located in each of two or more different positions. For example, the filler duct may be offset along the centre line of an elongate closure so that the closure can be reversed end-to-end in a corresponding elongate aperture to locate the filler duct in either of two positions along this centre line.
The invention will now be described by way of example with reference to the accompanying drawings in which;
DESCRIPTION OF THE DRAWINGS
FIG. 1 shows one embodiment of a diesel engine rocker cover according to the invention,
FIG. 2 is a longitudinal section along the centre line of the rocker cover of FIG. 1,
FIG. 3 is a section along the line S--S in FIG. 2, but showing an alternative method of attaching the closures to the rocker cover,
FIG. 4 shows a modified form of the rocker cover of FIG. 1, and
FIG. 5 shows another embodiment of a rocker cover according to the invention.
DISCLOSURE OF BEST MODE OF CARRYING OUT THE INVENTION
The illustrated rocker cover comprises a main metal body 1 having a top wall 2 with downwardly extending side walls 3 that terminate in a peripheral sealing flange 4. Bolt holes 5 are provided in the top wall 2 along the longitudinal centre line of the cover to allow the cover to be bolted in place on the cylinder head of an engine with the flange 4 in sealing engagement with the head.
Four circular apertures 6 are formed at equi-spaced points along the centre line of the top wall 2 and each is formed with a downwardly projecting collar 7.
Two plastic closures 8, 9 are provided to co-operate with the apertures 6 in the rocker cover, each comprising a flat plate 10 with two projections 11 on its under-side that are adapted for insertion into an adjacent pair of apertures 6. In one closure 8, one o
REFERENCES:
patent: 2452232 (1948-10-01), Fischer
patent: 2454612 (1948-11-01), Paxman
patent: 4198947 (1980-04-01), Rassey
Osborne Kenneth
Payne Derick B.
Farris Robert L.
Lazarus Ira S.
Perkins Engines Group Limited
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