OIL PUMP CONSTRUCTION [L3 Turbo]
id0111b4100600
• The oil pump is installed inside the engine front cover. The crankshaft drives the inner rotor through the oil pump chain and oil pump sprocket.
• The oil pump component consists of the oil pump body, oil pump sprocket, oil pump chain, oil pump chain guide, and oil pump chain tensioner.
• A trochoid gear has been adopted on the oil pump.
• The oil pump consists of the inner and outer rotors, relief valve, and oil pump body.
• The oil pump cannot be disassembled. If there is an oil pump malfunction, replace it as a single unit.
Oil pump specification
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Item
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Engine speed [rpm]
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Specification (kPa {kgf/cm2, psi})
|
|
Oil discharge pressure (reference value)
[Oil temperature: 100 °C {212 °F}]
|
1,500
|
156—363 {1.59—3.70, 22.7—52.6}
|
|
3,000
|
297—551 {3.03—5.61, 43.1—79.9}
|
|
Relief valve opening pressure (reference value)
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420—520 {4.28—5.30, 60.9—75.4}
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• A bush chain has been adopted for the oil pump chain, improving durability during high-output or high-load operation.
• The engine oil in the engine front cover lubricates the oil pump chain. Wear resistance has been improved by furnace hardening the pins constructing the oil pump chain.
• The teeth of the sintered material in the oil pump sprocket have been induction hardened to improve durability.
Oil pump driven chain, oil pump sprocket specification
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Item
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Specification (mm {in})
|
|
Oil pump driven chain
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Pitch size
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7 {0.28}
|
|
Oil pump sprocket
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Outer diameter
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52 {2.05}
|
|
Drive tooth width
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3.1 {0.12}
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