Cummins Engine Company, Inc.

Edward W Kasting

Richard E Glasson

Bryan W Swank

Roy J Primus

A internal combustion engine lubrication pump assembly (95) having a mounting frame (104) which is received by an aperture (104a) in a gear plate (10) and driven by a radial gear (22)of the engine accessory gear train and further including a method and apparatus for precisely positioning the gear plate (10) on the block (12) of the engine accessory drive gear train (22, 24, 26, 28, 30, 32, 34 and 36) whereby the precise positioning of the gear plate (10) results in the precise alignment of the gears mounted thereon. The present invention achieves this result by utilizing the shafts (56 and 58) of two of the gears (34 and 36) in the gear train as primary and secondary positioning means. Primary and secondary positioning bores (66) are formed in the engine block (12) and in the gear plate (10) and the primary and secondary gear shafts (60) inserted therein to position the gear plate (10) first at a point along a first axis relative to the engine block (12) and secondly at a point along a second axis relative to the engine block (12). The gears (22, 24, 26, 28, 30, 32, 34 and 36) mounted on the gear train are thus maintained in correct alignment relative to the engine crankshaft and camshaft gears (14, 18) and to adjacent mating gears (32, 34, 36, 26). Also disclosed are a mounting arm (88) integral with the gear plate (10) for variably positioning a radial gear (26) which drives the fan clutch assembly (86).

Oil pump arrangement for supplying oil under pressure in an internal

An aluminum rocker housing (10) is secured to the cylinder head (8) of an internal combustion engine (2) to surround and protect the cylinder valve assemblies (156, 158) and associated rocker arm mechanism. The front face (58) of the rocker housing (10) includes a recessed surface (68) which forms an air intake plenum (60) for receiving pressured air from the engine turbocharger (48). Air intake passageways (84, 86, 88) cast to the rear of the front face (58) communicate with the air intake plenum (60) and simultaneously register with air intake ports (160) formed in the cylinder head (8) to provide a means for distributing air from the air intake plenum (60) to the cylinders (16). A rocker cover (12) molded from plastic is secured to the rocker housing (10) by a plurality of vibration-damping bolt assemblies (13). The rocker cover (12) contains a drip lip (148) to prevent engine lubricants from coming into contact with the rocker cover gasket (14). The rocker cover (12) also includes a means (151) for engaging the gasket (14) to increase the sealing capacity thereof.

Rocker housing and rocker cover

Method and apparatus for precisely positioning a gear plate (10) on the block (12) of an internal combustion engine equipped with an accessory drive gear train (22, 24, 26, 28, 30, 32, 34 and 36) are disclosed whereby the precise positioning of the gear plate (10) results in the precise alignment of the gears mounted thereon. The present invention achieves this result by utilizing the shafts (56 and 58) of two of the gears (34 and 36) in the gear train as primary and secondary positioning means. Primary and secondary positioning bores (66) are formed in the engine block (12) and in the gear plate (10) and the primary and secondary gear shafts (60) inserted therein to position the gear plate (10) first at a point along a first axis relative to the engine block (12) and secondly at a point along a second axis relative to the engine block (12). The gears (22, 24, 26, 28, 30, 32, 34 and 36) mounted on the gear train are thus maintained in correct alignment relative to the engine crankshaft and camshaft gears (14, 18) and to adjacent mating gears (32, 34, 36, 26). Insertion of the positioning gear shafts (60) into the corresponding positioning bores (66) in the engine block facilitates connection of these gears with the engine lubrication system and results in these gear shafts (66) being self-lubricating. Also disclosed are a mounting arm (88) integral with the gear plate (10) for variably positioning a radial gear (26) which drives the fan clutch assembly (86) and a lubrication pump assembly (95) having a mounting frame (104) which is received by aperture (104a) in the gear plate (10) and is driven by one of the radial gears (22) in the accessory gear train (22, 24, 26, 28, 30, 32, 34 and 36).

Lubrication pump mounting assembly

This disclosure relates to a turbocharged reciprocating piston type of internal combustion engine. The engine includes a block, a head fastened to the upper side of the block, and a rocker housing fastened to the upper side of the head. The head has intake air and exhaust passages formed in it between intake and exhaust openings and intake and exhaust ports of the engine cylinders. The turbocharger is mounted on one side of the engine block, and the exhaust openings are in the head on the same side as the turbocharger. Exhaust manifold ducts connect the exhaust openings with the turbocharger. The intake openings are formed in the upper surface of the head and air intake passages are formed in the rocker housing. An air intake duct and manifold connect the turborcharger with the passages of the housing. The intake air passages of the head are formed and located to provide an advantageous heat transfer relation between the intake air and the surrounding engine ports.

Internal combustion engine

A compact lubrication fluid filtering and cooling assembly including a bracket (16) for simultaneously mounting a pair of lubrication filters, (12 and 14) and a lubrication fluid cooler (10) on the block (4) of an internal combustion engine equipped with an internally contained lubrication circuit and providing fluid connection therewith. The bracket (16) provides a plurality of fluid flow passages (30, 77, 80, 88 and 91a) whereby lubrication fluid is conducted from the main engine oil discharge port (24) into bracket (16) into a first discharge port (26) leading to filter (12) from which oil is returned to the bracket for delivery to cooler (10), and from cooler (10) back through bracket (16) to the main return port on the engine block. At the same time, a predetermined amount of lubrication fluid is diverted through a bleed passage (30) to an auxiliary filter (14) and then conveyed through a flow passage (80) in bracket (16) to an auxiliary port (81) which communicates with an auxiliary inlet port (82b) formed on the engine block. Cooler (10) includes a hollow shell (45) in which a plurality of spaced coolant tubes are supported by a pair of support plates (50, 51) positioned at opposite ends of the shell and secured to hollow shell (45) to form a fluid tight seal. End caps (60, 62) are joined to hollow shell (45) in a manner to prevent the nondestructive disassembly of cooler (10) and require its replacement during engine maintenance or overhaul. Cooler (10) is mounted on bracket (16) in an offset position with respect to its central longitudinal axis to form a compact cooler/filter assembly in a manner which does not unduly complicate the internal flow passages (30, 77, 80, 88 and 91a) contained within the bracket (16).

Lubrication fluid filtering and cooling assembly

Gear plate assembly for mounting and positioning an accessory drive train

This disclosure relates to a reciprocating piston internal combustion engine including a block and a head secured to the upper side of the block. A coolant circulation pump and manifolds are provided on one side of the block, and coolant inflow and outflow passages are formed through the side of the block and leading to the manifolds. A flow path is provided for each engine cylinder, the coolant for each cylinder flowing from a feed manifold and an inflow passage, around a cylinder, into the head, around the cylinder valves and injector, into the block, and out of the outflow passges to a collection manifold.

Internal combustion engine coolant system

A combined gear cover and mount for an internal combustion engine is disclosed for use on an engine having a vibration damper mounted on a projecting end of the engine crankshaft wherein the gear cover includes a housing for enclosing the vibration damper while re-enforcing the engine mount formed integrally with the gear cover. The gear cover is adapted to connect with a gear plate mounted directly on the engine block to form an enclosure for the gear train of the engine. The gear cover also includes an integral fan clutch housing and a lubrication fluid transfer passage for an engine driven air compressor.

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Seymour, IN, United States of America

Edward W Kasting