Detachable timing gear cassette unit for an explosion or internal combustion engine
AssigneeCompagnie des Transmissions Mechaniques Sedis
InventorBernard Kohler
Life of this patent
Estimating the term…
Abstract
A detachable timing gear cassette unit for an internal combustion engine. The cassette has side walls separate from the cylinder block of the engine, and the side walls form a housing. The housing contains the camshaft sprocket, the crankshaft sprocket, a timing chain that connects the sprockets, a tensioner to maintain a suitable tension in the timing chain and positioning ribs to position the sprockets within the housing. Engine oil is circulated through the housing, in a generally downwardly direction, to lubricate the sprockets and the chain and to cool the oil. The cooling of the oil is assisted by internal ribs on the inside of the housing and by external ribs on the outside of the housing.
Claims14
A detachable timing gear cassette unit for attaching to a crankshaft and a camshaft of a cylinder block of an engine, said timing gear cassette unit comprising:
- a housing formed by at least two sealingly interconnected side walls, said housing, including said at least two interconnected side walls, being attachable and detachable as a unit from said cylinder block;
- and
- synchronization means disposed within said housing, said synchronization means comprising:
- first means for producing an input movement for connection to said crankshaft;
- at least one second means for producing an output movement for connection to said camshaft;
- third means interconnecting said first and at least one second means, said first, at least one second, and third means being prepositioned and communicating such that said third means drivingly connects said first means to said at least one second means whereby said output movement is driven in synchronism with said input movement;
- and
- positioning means located adjacent said first and at least one second means for maintaining said first means and said at least one second means in position during attachment of said timing gear cassette unit to said cylinder block.
An engine comprising a cylinder block and a timing gear cassette unit for attachment to and detachment from said cylinder block, said timing gear cassette unit comprising:
- a plurality of sealingly interconnected side walls forming a housing, said plurality of side walls being attachable and detachable in unison from said cylinder block;
- drive means disposed within said housing, said drive means comprising first drive means for producing an input movement for connection to a crankshaft, second drive means for producing an output movement and third drive means drivingly connecting said first drive means and said second drive means to drive said second drive means in synchronism with said first drive means;
- and
- positioning means located adjacent said first and second drive means for maintaining said first and second drive means in position during attachment of said timing gear cassette unit to said cylinder block.
Dependencies are inferred from the claim text.