What is a derated engine?
Engine derating is the reduction of an engine’s output due to less-than-ideal operating conditions. Derating sometimes is done intentionally when you want to prolong the engine’s life and avoid substantial wear or damage.
Why is my truck derating?
As the ambient temperature increases beyond designed operating conditions, engine derating begins, decreasing its efficiency. For example, if an engine is designed to operate at 30°C, and the ambient temperature reaches 40°C, the engines can experience a reduction in power by as much as 5-10%.
How often do you regen a truck?
Depending on your driving, active regeneration may happen as often as once a day. If you do a lot of stop and go, it can happen even more often. Frequency depends on duty cycle and how much soot collects – as often as once a day or every other day An active regeneration could take up to one-half hour or more.
How do you calculate derating?
The installed current rating is calculated by multiplying the base current rating with each of the derating factors, i.e. For example, suppose a cable had an ambient temperature derating factor of kamb = 0.94 and a grouping derating factor of kg = 0.85, then the overall derating factor kd = 0.94×0. 85 = 0.799.
What makes the Cummins ISX 15 engine so good?
Advanced technology in the ISX 15 engine ensures a larger “sweet spot” for better fuel economy due to effective use of direct drive, downshifting ability and optimized communication between transmission and engine.
Are there any emissions derates on a 2013 Cummins diesel?
A new engine calibration is now available for 2013 diesel engines with emergency vehicle ratings that eliminates all emissions related vehicle speed or engine torque derates.
How long does an engine derate last on a truck?
I have seen and experienced the display stating a derate has occurred and the engine operate normally for a very long time like in the order of 6 weeks with the display stating engine derated. If it were me, I would drive it if you can keep it up to road speed and try to get it back to your company shop to let them access the situation.
What to do if your truck engine is derated?
If it will only lug along at 10 to 12 mph there is nothing you can do except to call your company shop and let them tell you what you are to do, which will probably involve a wrecker and tow job. It may be a good idea to call the shop anyway and let them know what it is doing.