﻿GET_GEVOMechL2_02_01_01_114 - ANIMATION Screen
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Describe the protection strategies used with the lubricating oil system.

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Low Lube Oil Pressure Protection: 20 seconds after the engine reaches 180 RPM, the ECU compares the inlet engine lubricating oil pressure to a value that defines the minimum required lubricating oil pressure.

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If the lubricating oil pressure drops below or increases above the indicated values, the ECU signals the EMS software to take appropriate action to decrease or increase engine speed, as required.

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Very Low Lube Oil Pressure Protection: When the engine is running, the ECU compares the inlet engine lubricating oil pressure, as read by the ELIP sensor, to a value that defines a very low lubricating oil pressure trip level for a given engine speed.

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If the lubricating oil pressure drops to the trip level, the EMS software shuts down the engine.

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Low Oil Pressure Count Protection: This function restricts the engine to Notch 2 if five or more low oil pressure incidents occur in a 14-day period.

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Cold Engine Protection: This function prevents damage to the engine, the lubricating oil pump, and the external oil piping.

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Hot Oil Protection: This protects the engine from overheating due to tunnel operation, cooling system malfunction, and other factors that can raise the engine oil inlet temperature.

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Engine Water Inlet Temperature and Engine Lube Oil Outlet Temperature ΔT Protection: The engine horsepower derates or the engine shuts down if the delta temperature (ΔT) between the engine water inlet (as measured by the EWIT sensor) and the engine lubricating oil outlet (as measured by the ELOT sensor) exceeds an allowable limit.

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Loss of Both Engine Oil Temperature Sensors Protection: This function provides protection when both engine oil temperature (ELIT and ELOT) sensors are determined to be bad.

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In this case, the engine will shut down.

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Crankcase Overpressure Protection: This function provides protection when crankcase pressure exceeds a primary limit for 0.5 seconds or a secondary limit for 10 seconds.

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In this case, the engine shuts down.

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Describe how to perform scheduled maintenance related to the lubricating oil system.

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Lubricating Oil System

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Daily or during trip maintenance, with the engine at IDLE, make a visual inspection of the engine, lubricating oil pump, oil cooler, oil filter, pre-lube pump, and all system piping for oil leaks.

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Make corrections as necessary.

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Check the oil level with the engine at IDLE.

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Collect an oil sample every 7 to 10 days and analyze it.

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If the oil is suitable for continued use, fill the oil to the FULL mark on the dipstick with the approved lubricating oil.

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If not acceptable, find and fix the root cause of the contaminated oil, and then change the oil and filters.

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Every 184 days, drain the oil from the lubricating oil system.

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Remove the 10 filter elements from the oil filter tank, clean the inside of the tank, install new filters, and fill the engine with oil to the proper level on the dipstick.

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Lubricating Oil Pump: Visually inspect the oil pump for any leaks or cracks.

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If leaks are present in the piping joints, try tightening the joint first.

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If this fails to stop a leak, remove the pump and renew the gaskets.

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Listen for unusual noises coming from the pump and correct as needed.

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For instructions on lubricating oil pump removal and installation, refer to the Lubricating Oil Pump Removal and Installation module of the GEVO Diesel Engine Advanced course.

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Lubricating Oil Cooler: Visually inspect the oil cooler and the piping connections to the cooler for any leaks.

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Correct any leaks in the piping system as necessary.

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Any leaks in the oil cooler require that the oil cooler be replaced. 
