Camshaft driving system for internal combustion engine

Patent · Tue Jun 23 00:00:00 EDT 1987

OSTI ID:6190950

Hiroshima, K A

This patent describes camshaft driving system for a double overhead camshaft engine cylinder rows extend parallel to the crankshaft of the engine. The second cylinder row is rearwardly displaced from the first cylinder row in the axial direction of the crankshaft so that vacant spaces are formed respectively behind the first cylinder row and in front of the second cylinder row. All the pistons in the cylinders of the first and second cylinder rows are connected to the crankshaft and a pair of camshafts for driving the intake and exhaust valves are provided in the cylinder head of each cylinder row to extend in the direction of the crankshaft. The camshaft driving system comprises a timing pulley provided on one of the intake and exhaust camshafts of each cylinder row to rotate together with the camshaft; A crank pulley is driven by the crankshaft; A first driving force transmission means transmits rotation of the crank pulley to the timing pulleys of the first and second cylinder rows; a second driving force transmission means transmits rotation of the timing pulley of the first cylinder row to the other of the camshafts of the first cylinder row; and a third driving force transmission means transmits rotation of the timing pulley of the second cylinder row to the other of the camshafts of the second cylinder row. The second driving force transmission means is disposed in the vacant space behind the first cylinder row and the third driving force transmission means is disposed in the vacant space in front of the second cylinder row.

• Assignee: Mazda Motor Corp.
• Patent Number(s): US 4674452
• OSTI ID: 6190950
• Resource Relation: Patent File Date: Filed date 29 May 1986
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
INTERNAL COMBUSTION ENGINES
MECHANICAL TRANSMISSIONS
DESIGN
OPERATION
CYLINDERS
EXHAUST SYSTEMS
INTAKE STRUCTURES
ROTATION
SHAFTS
TIMING PROPERTIES
VALVES
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
HEAT ENGINES
MACHINE PARTS
MECHANICAL STRUCTURES
MOTION
330100* - Internal Combustion Engines