Overhead cam shaft type V-engine cylinder block

Patent · Tue Jan 06 04:00:00 EST 1987

OSTI ID:6950333

Tominaga, N; Kurai, N; Ueno, H; Suzuki, S

This patent describes an overhead camshaft type V-engine having V-shaped cylinders equipped with and overhead camshaft drive by a timing chain disposed and arranged on either side of the cylinders at a right angle to a crankshaft. The improvement comprises: a cylinder block; a timing chain passage in the cylinder block, the passage housing the timing chain movement in a plane of the chain. The passage includes a spacing on each side of a pair of runs of the chain, and in the plane, the spacing on each side of a pair of runs of the chain being substantially the same; the block further including a wall at least partially bounding the spacings and intersecting the plane. The wall has symmetrical wall openings therethrough symmetrically disposed on opposite sides of the chain and its plane, and opening into a respective substantially same spacing; a plurality of chain guide means, each mounted in a respective substantially same spacing; and tensioning means resiliently biasing one of the chain guide means toward and against a run of the chain to place the chain in tension, at least a portion of the tensioning means being mounted in one of the symmetrical wall openings adjacent to the respective run. The symmetry of the symmetrical wall openings enable the tensioning means to be positioned adjacent to either run, whereby the cylinder block may be used for diametrically opposite cylinders.

• Assignee: Yamaha Hatsudoki Kabushiki Kaisha, Iwata
• Patent Number(s): US 4633826
• OSTI ID: 6950333
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
330602 -- Vehicle Design Factors-- Engine-Transmission Matching
CYLINDERS
ENGINES
FABRICATION
FASTENING
HEAT ENGINES
INCIDENCE ANGLE
INTERNAL COMBUSTION ENGINES
JOINING
MACHINE PARTS
MECHANICAL TRANSMISSIONS
POSITIONING
SHAFTS
SPACE DEPENDENCE
STRAINS
SYMMETRY
TIMING PROPERTIES
VEHICLES