QSK 60G & 60G High Efficiency Series
Gas Engines
Module 5 – LUBRICATION SYSTEM
Cummins Corporate Training
1
HE -60G/ Lube / BMG / 03 - 07 / REV 01.
System Module - Lubrication
Learning Objective
At the end of this section of the module you will be able to describe
the operation of the Lubrication System and trace the oil flow path.
Agenda
• The Oil System.
• Lubrication System Schematic.
• Main Oil System Components.
• Oil Flow Path.
2
Lubrication System Features
Oil Pan
- Two separate pickup tubes & single strainer for engine
driven oil pump (required to suit flow / size limitation).
Filter Head
- Houses 4 spin on filters .
- Incorporates differential pressure by-pass valve.
Oil Pump
- Sump mounted.
- Integral pressure regulator.
NOTE: QSK 60 Gas Engines do NOT have any Oil Thermostats
fitted, oil cooler continuously supplied prior to filtering.
3
Lubricating Oil System Components
QSK Gas Genset
Lube oil cooler cores mounted in ‘V’
(example)
QSK60G X4
Oil Oil Pump,Regulator
Oil Pan Filters & pick-up tube
4
QSK60G Lubricating System Schematic
Left Bank Cam Bushing / Head Gear Rifle
C
Filter header with
REAR Left Bank Piston Cooling Rifle FRONT By-pass valve.
1L 2L 3L 4L 5L 6L 7L 8L (100 psi differential).
Idle
Protection
25 psi.
Main Bearing Oil Rifle - 60 psi @ 1800 rpm Front
Gear
1R 2R 3R 4R 5R 6R 7R 8R Train
Right Bank Piston Cooling Rifle
Right Bank Cam Bushing / Head Gear Rifle
T C
Oil
P Cooler
Turbochargers Fixed Pressure
Regulating Valve. Filter
( 58psi - 4.0B)
Pressure
Engine driven oil differential
pump with Valve
pressure regulator
5
Engine Lubrication - Oil Flow (1of 6)
Flywheel Housing
Oil Manifold
Flow ; Strainer - Pick-up tube - Pump - Filter - Cooler Inlet Rifle - Cooler outlet
Rifle - Flywheel housing Manifold.
Engine Lubrication - Oil Flow (2 of 6)
Oil Passages - Block
Oil Cooler Outlet
Main Oil Rifle
Piston Cooling
Nozzle Rifles
Cam Bushing &
Head Gear Rifle
Flywheel end view with Flywheel housing Removed
7
Engine Lubrication - Oil Flow – Turbo (3 of 6)
Coolant lines
High
Efficiency
60G
Direct oil supply
from flywheel
housing through
mounting bracket
to Turbocharger
Oil return hose bearings.
direct to block /
pan.
8
Engine Lubrication – Oil Flow – Turbo’s (4 of 6)
Standard60G 6.0 mm drilling in turbo fittings
to reduce flow. (Pressure as
main manifold).
Customer oil
manifold includes
tapings for sensors
as req’d.
(Oil pressure, oil
prime, etc.
Flywheel
housing Oil
manifold.
Idle Protection
Piston Cooling non-return
Nozzel Rifle. valves (25 psi)
for piston
Cam Bushing &
cooling nozzle
Head Gear Rifle.
supply.
9
Engine Lubrication - Oil Flow – Turbo’s (5 of 6)
Turbo Oil Supply / Return Pipework
Standard QSK 60G
• Oil supply via
flexible hoses from
flywheel end
Customer manifold to
top of turbo bearing
housing.
• Oil return via large Oil Return Line
flexible houses from Left Bank Turbo
bottom of bearing
housing direct to Oil Supply Lines
block (oil / Pan ).
10
Engine Lubrication - Oil Flow (6 of 6)
Conventional oil drilling through Crankshaft for
Conventional oil drilling
mains and big end lubrication.
from big end to little end
bearing
Main Oil Rifle Supply - Main Bearings - Big End Bearings & Piston Pin Bush
11
Oil Pan
HE QSK60G Power Generation Oil Pan
Capacities; QSK60G - 100 US gallons.
Front Rear
Pan
Adapter
Full length Oil Pan Drain Plug
12
Oil Pump
Gear Drive from Regulator
Crankshaft. Valve Inlet
Pick-up
tube
Inlet Outlet
• Oil pumps for the HE QSK 60G share the same features, but are different for
50/60 Hz applications.
•At 1800 rpm flow rates are ; QSK 60G - 270 gallons/min.
•Oil pan mounted.
• Crankshaft Driven (gearing 1.32 :1).
• Integral Pressure Regulator - Regulator opens at 58 +/- 3 psi
13
Oil Pump & Pick-up Tube
14
Inlet
Oil Filter
Head Filter Head
Outlet
• Mounting Location Right
By - Pass
Bank.
Shuttle Valve
(100 psi)
• Integrated Restriction
By-Pass Valve. Oil
Control Flow
Spring
•QSK60G Head Houses four
off Spin on cartridges.
Full Flow Filters:
•Fleetguard Filter No. LF
30µm (absolute rating)
9024. Cummins Part #: 4016657
15
Oil Filters
• Spin on type for ease of service.
•Combined Full Flow and By-Pass Filter
( Venturi-Combo filter).
• 85-90 % to ‘StrataPore’ synthetic media.
- 28/30 micron ‘absolute’ rating. (98% efficiency)
• Plus 10-15% to stacked disc by-pass section.
- 7 micron ‘absolute’ rating. (98% efficiency)
• Always Check replacement part number.
- Cummins Part #: 4016657
- Fleetguard Part #: LF 9024.
• Filter should be filled with engine oil before installation.
16
Typical Full Flow
and Bypass
Filtration System
Venturi Combo - What are the
Advantages?
Simplify Plumbing
– Remove the need for separate bypass circuit
Remove parasitic loss of fluid to sump
– Improves fuel consumption since 10% of the fluid is
not returning to Sump.
Allows Combo type filter to replace existing Full Flow
filter.
– Achieve Finer Filtration with Bypass Media
– Achieve Increased Filter Life with Bypass Media
– Improved Organic Capacity
18
QSK
– Venturi Combination
Filtration System
Venturi Combo
What does it do ?
Generates flow through the highly restrictive bypass media.
Reduces the required filter restriction.
How does it do it ?
The flow through full flow element is restricted by the
nozzle throat, forcing more flow through the bypass section.
A low pressure zone created in the throat of the nozzle,
generates a suction on the outlet of bypass media, pulling
more flow through the bypass section.
The nozzle diffuser reduces the fluid velocity, recovering a
portion of the energy lost in the throat. This effectively
reduces the total restriction of the filter.
20
Venturi Combo Design
Single outlet to engine
Single Inlet / Single Outlet design
>10% of Flow
<90% of Flow
Single Inlet
Nozzle throat restricts flow from full flow media From Pump
forcing more through stacked disc media.
Then the diffuser of the nozzle reduces velocity, reducing the effective total filter restriction.
QSK 60G & 60G High Efficiency Series
Gas Engines
Module 5 - LUBRICATION
End
Cummins Corporate Training
22
HE -60G/ Lube / BMG / 03 - 07 / REV 01.
