View source for HowTo/Tune a Diesel EngineSpec

=Test Track Module=
This module allows you to use a time slider to rapidly move through your testing cycle without having to wait until your train gets up to speed.

Start the module from the Launcher > File > Visit Test Track.

== Setting up your Track==
* Click System Menu > New Test
* Click Add Section and add as many sections as you require. 
* Adjust the section length, gradient and curve radius
* Once you've set up a tick, click the tick to apply and save your changes.
* Your track is drawn off into the distance.
Note: We recommend you go uphill before you go downhill so that your track is "above ground".

== Placing your Consist==
* Click the Train tab and place trains as you would normally
* Use the Consist tab and Get tool to Get then save your consist for future testing

== Conducting a Test==
* Expand the graph and choose which elements you wish to test.
* Click Add to add, for example, Train speed, and Tractive Effort.
* The graph will begin drawing. This graph is over time, so think of it like a recorder.
* To get your train moving, release the brakes, increase the throttle as you would normally.
* Notice that the graph lines change over time.
* Click pause to stop the train motion, but notice the graph continues to "buffer".
* Drag the time slider to the right to rapidly get further down the track (for example to the bottom of a hill you are testing your train on).
* Click Pause again for the motion to continue.

==Editing an Engine Spec==
* Click System Menu > Edit Engine Spec
* To adjust the power curve, click the "click here to edit power curve" link.
* The power curve indicates how many kiloNewtons (kN) of power is applied at various speeds (in m/s).
* Click the tick to save your changes and follow the prompts to save in memory or to save a new version of the engine spec.
* While the graph below looks pretty, it provides a very underpowered output at low notches (meaning it will accelerate very slowly in notch 1).

View your power curves here:

[[File:2018-08-28 140035.png|700px]]


Change the m/s and Kn values here:

[[File:2018-08-28 140046.png|700px]]

In the above image, the numbers on the left are m/s and the numbers on the right are the tractive effort applied at that speed (in kN).

So at 3m/s there is a maximum tractive effort of 10.2kN. 

If your train is accelerating too slowly, increase the power numbers. If your train is wheelslipping, reduce the numbers.

See Also: 
* [[Test_Track]]
* [[KIND_Engine]]
* [[Motor_container]]

[[Category:How-to guides]]