Arrangements for supporting crankshafts in multicylinder engines
First Claim
1. An arrangement for supporting a crankshaft in a multicylinder engine comprising:
- a plurality of bulkheads provided in a cylinder block of the engine to be arranged at predetermined intervals along an axis of the crankshaft disposed in a lower part of the cylinder block,a plurality of bearing caps each coupled with a lower end of one of the bulkheads by a cap bolt screwed into the bulkhead through a part of the bearing cap so as to constitute a bearing portion for supporting the crankshaft in conjunction with the bulkhead,a beam structure extending along the axis of the crankshaft to interconnect therethrough adjacent two of the bearing caps, anda reinforcing structure coupled with the beam structure with a plurality of clamped spots generally arranged in the direction along which the crankshaft extends and also coupled with each of side skirt portions of the cylinder block with a plurality of clamped spots generally arranged in the direction along which the crankshaft extends.
1 Assignment
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Accused Products
Abstract
An arrangement for supporting a crankshaft in a multicylinder engien comprises a plurality of bulkheads provided in a cylinder block of the engine to be arranged at predetermined intervals along an axis of the crankshaft disposed in the cylinder block, a plurality of bearing caps each coupled with a lower end of one of the bulkheads by a cap bolt screwed into the bulkhead through a part of the bearing cap relatively close to the bulkhead so as to constitute a bearing portion for supporting the crankshaft in conjunction with the bulkhead, a beam structure extending along the axis of the crankshaft to interconnect therethrough adjacent two of the bearing caps, and a reinforcing structure coupled with the beam structure with a plurality of clamped spots generally arranged in the direction along which the crankshaft extends and also coupled with each of side skirt portions of the cylinder block with a plurality of clamped spots generally arranged in the direction along which the crankshaft extends.
14 Citations
16 Claims
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1. An arrangement for supporting a crankshaft in a multicylinder engine comprising:
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a plurality of bulkheads provided in a cylinder block of the engine to be arranged at predetermined intervals along an axis of the crankshaft disposed in a lower part of the cylinder block, a plurality of bearing caps each coupled with a lower end of one of the bulkheads by a cap bolt screwed into the bulkhead through a part of the bearing cap so as to constitute a bearing portion for supporting the crankshaft in conjunction with the bulkhead, a beam structure extending along the axis of the crankshaft to interconnect therethrough adjacent two of the bearing caps, and a reinforcing structure coupled with the beam structure with a plurality of clamped spots generally arranged in the direction along which the crankshaft extends and also coupled with each of side skirt portions of the cylinder block with a plurality of clamped spots generally arranged in the direction along which the crankshaft extends. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An arrangement for supporting a crankshaft in a multicylinder engine comprising:
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a plurality of bulkheads provided in a cylinder block of the engine to be arranged at predetermined intervals along an axis of the crankshaft disposed in a lower part of the cylinder block, a plurality of bearing caps each coupled with a lower end of one of the bulkheads by a cap bolt screwed into the bulkhead through a part of the bearing cap relatively close to the bulkhead so as to constitute a bearing portion for supporting the crankshaft in conjunction with the bulkhead, each of said bearing caps being so formed as to have first and second extended portions projecting downward from opposite ends thereof to face each other with the cap bolt between and low ends of said first extended portions of the bearing caps, a first beam member incorporated with lower ends of said first extended portions of the bearing caps to extend along the axis of the crankshaft, a second beam member incorporated with lower ends of said second extended portions of the bearing caps to extend along the axis of the crankshaft, and a reinforcing structure for connecting the first and second beam members with side skirt portions of the cylinder block respectively. - View Dependent Claims (16)
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Specification