OIL PUMP CONSTRUCTION [13B-MSP]
id0111e4100600
• The oil pump is installed inside the front cover. The eccentric shaft drives the inner rotors through the oil pump chain and oil pump sprocket.
• A trochoid type oil pump has been adopted.
• The oil pump consists of oil pump body, shaft, front outer rotor, front inner rotor, middle plate, rear inner rotor, rear outer rotor, and oil pump cover.
• A two-rotor type oil pump has been adopted to realize both discharging performance and downsizing. This also contributes to reducing the discharging pulsation which is unique to trochoid pumps.
• An aluminum alloy oil pump body and cover have been adopted to reduce weight.
• The relief valve, which returns engine oil to the intake side when the oil pressure is the specified value or more, is integrated with the oil pump cover.
Oil pump specification
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Item
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Engine speed [rpm]
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Specification (kPa {kgf/cm2, psi})
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Oil discharge pressure (reference value)
[Oil temperature: 100°C {212°F}]
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1,500
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280 {2.86, 40.6}
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3,000
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500 {5.10, 72.5}
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Relief valve opening pressure (reference value)
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1,080 {11.01, 156.6}
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