초록 ▼

A sprocket retention/chain guide member for use in the timing drive mechanism for an internal combustion engine where a timing chain acts to rotate the engine camshaft from the crankshaft and time the opening and closing of the inlet and exhaust valves for the engine cylinders based on reciprocation

A sprocket retention/chain guide member for use in the timing drive mechanism for an internal combustion engine where a timing chain acts to rotate the engine camshaft from the crankshaft and time the opening and closing of the inlet and exhaust valves for the engine cylinders based on reciprocation of the pistons. The retention/guide member is adapted to be mounted on the front of the engine block and has oppositely disposed arcuate grooves loosely receiving the crankshaft and camshaft sprockets and guide channels on each side of the member acting as snubbers for the chain. The member, chain and sprockets form a subassembly for shipping and ease of assembly on the block with the sprockets being received on the crankshaft and camshaft. Also, a chain tensioner may form a portion of one guide channel.

대표청구항 ▼

A sprocket retention and chain guide member comprising a body adapted to be mounted on an engine block, said member having a pair of oppositely disposed arcuate grooves adapted to loosely receive portions of a pair of sprockets, said member having a generally trapezoidal shape with concave arcuate e

A sprocket retention and chain guide member comprising a body adapted to be mounted on an engine block, said member having a pair of oppositely disposed arcuate grooves adapted to loosely receive portions of a pair of sprockets, said member having a generally trapezoidal shape with concave arcuate ends formed of a pair of arcuate end flanges and elongated chain guide channels, the first end flange having a pair of parallel flanges extending therefrom forming a groove with said first end flange, a pair of parallel flanges forming an oppositely disposed second groove with the second end flange, and a removable plate forming one of said last mentioned parallel flanges, said pair of guide channels receiving a timing chain extending between and partially encompassing the sprockets.