﻿GET_GEVOMechL2_02_01_01_43 - ANIMATION Screen
1
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In over-target control, if the engine inlet lubricating oil (as read by the ELIT sensor) is five degrees above the target temperature, the split cooling water system lowers the water temperature reference. 

2
00:00:13,417 --> 00:00:19,750
This change in reference temperature controls when the univalve switches from Mode 2 to Mode 1. 

3
00:00:19,750 --> 00:00:31,042
If the ELIT value is 10 degrees above the target temperature, the engine speed modulates depending on the desired engine speed (as selected by the throttle handle or through the trainline). 

4
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Engine speed modulation optimizes the oil flow to the engine. 

5
00:00:35,458 --> 00:00:44,000
The engine runs at one of three engine speeds: 580, 888, or 1050 RPM. 

6
00:00:44,000 --> 00:00:52,917
Generally, if the desired engine speed is below 580 RPM, engine speed will go to 580 RPM. 

7
00:00:52,917 --> 00:01:02,542
If the desired engine speed is between 580 and 888 RPM, engine speed will go to 888 RPM. 

8
00:01:02,542 --> 00:01:10,125
If the desired engine speed is above 888 RPM, engine speed will go to 1050 RPM. 

9
00:01:10,125 --> 00:01:19,958
However, if the ELIT value continues to rise in a given speed step, the engine speed will go to the next step until 1050 RPM is reached. 

10
00:01:19,958 --> 00:01:31,542
If the ELIT value is 15 degrees above the target temperature (also referred to as the hot oil set point), the available horsepower is derated to prevent damage to the engine. 

11
00:01:31,542 --> 00:01:38,708
Horsepower deration occurs to the point necessary to maintain the target temperature plus 15°F. 

12
00:01:38,708 --> 00:01:45,125
If the available horsepower reduces to zero for five minutes, the locomotive will go to idle. 

13
00:01:45,125 --> 00:01:53,542
If the ELIT value rises above 240°F, the engine will shut down and stay locked out for two hours.
