Variable Speed Page 5 – Data Log

John Deere Marine Variable Speed Engine Application Review Form – April 2025

Record Variable Speed sea trial data at 1000 RPM, four user-defined speed/load points, rated speed, and max speed.

Data Log Header

Show Production Sea Trial Data Set
No engine limits source selected on Page 1.

Main Variable Speed Data Log

Parameter Unit Limits 1000         ____ (Rated) ____ (Max)
Ambient Air Temperature
N/A
Vessel Speed (for keel cooled applications)
N/A
Generator Output (for VS gen on hybrid apps)
N/A
Analog Input 1: Coolant Pump Inlet Press.
Manual Entry / Source Needed
Analog Input 3: Exhaust Back Pressure
Manual Entry / Source Needed
Analog Input 4: Fuel Inlet Pressure
Manual Entry / Source Needed
Analog Input 5: Fuel Return Pressure
Manual Entry / Source Needed
Analog Input 7: Aux. Temp. 1 — Temp. at Air Cleaner
Ambient +17°C / 30°F
Analog Input 8: Air Inlet Restriction
Manual Entry / Source Needed
Analog Input 9: Auxiliary Temp. 2 — Eng. Room Temp.
Manual Entry / Source Needed
Barometric Air Pressure*
N/A
Engine Coolant Temperature*
Manual Entry / Source Needed
Engine Oil Pressure*
____ Ref
Fuel Usage Rate*+
N/A
Manifold Air Pressure — Actual/Boost Press.*
____ Ref
Manifold Air Temperature*
Manual Entry / Source Needed
TC 1: Coolant Pump Inlet Temperature
N/A
TC3: Exhaust Temperature
____ Ref
TC4: Fuel Return Temperature
Manual Entry / Source Needed
Aftercooler Restriction (HFM Only)
Manual Entry / Source Needed
Conditional rows are controlled by Page 1: Keel Cooled shows the keel-cooled vessel speed row; Variable Speed Generator Yes/Other shows generator output; Aftercooler Equipped shows aftercooler restriction.

Production Sea Trial Data Set

This lower data set is shown only when “Show Production Sea Trial Data Set” is set to Yes.
Parameter Unit Limits 1000         ____ (Rated) ____ (Max)
Ambient Air Temperature
N/A
Vessel Speed
N/A
Barometric Air Pressure*
N/A
Engine Coolant Temperature*
Manual Entry / Source Needed
Engine Load at Current Speed*+
Manual Entry / Source Needed
Engine Oil Pressure*
____ Ref
Fuel Usage Rate*+
N/A
Manifold Air Pressure — Actual/Boost Press.*
____ Ref
Manifold Air Temperature*
Manual Entry / Source Needed
Sea Water Temperature
N/A
Previous Next Page