Fuel Injection Pump; Lubricating System - Doosan DE12T Operation & Maintenance Manual

10.2. Lubricating System

10.2.1. General descriptions and main data
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General descriptions
All the engine oil pumped up from the oil pan by the gear type oil pump is filtrated through
the oil cooler and oil filter, and this filtrated oil is forced through the main oil gallery in the
cylinder block from where it is distributed to lubricate the various sliding parts, and fuel
injection pump in order to ensure normal engine performance.
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Specifications
Item
Lubricating system
Oil pump type
Relief valve opening pressure
Bypass for oil cooler
Opening pressure
Adjusting valve for spray nozzle
Opening pressure
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Diagram of lubricating system
Conn. rod bearing
Main bearing
Main oil gallery
Relief valve
4.4bar
Specifications
Forced pressure Oil filter type
circulation
Gear type
10±1.5 kg
.
5+1 kg
1.5 ~ 1.8 kg
Rocker arm
Oil cooler Oil filter
Valve Valve
5bar 3bar
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Item
Bypass for filter element
.
cm 2 Valve opening pressure 1.8 ± 2.3 kg
Bypass for entire oil filter
cm 2 Valve opening pressure 4.0 ~ 4.8 kg
.
cm 2
Oil pump
Valve
10bar
Specifications
Full flow
WAter pump
bearing
Fuel injection
pump
Turbocharger
Oil spray nozzle
1.3bar
.
cm 2
.
cm 2
ED5OM008