Exhaust gas Temperatures
Exhaust gas Temperatures
(OP)
* Can anyone tell me why the exh. gas temp. after a cylinder is less than the exh. gas temp at the Turbo inlet?? Engine is a 8000 kW Wartsila 12V38.
* How to check the condition of the turbo on the temp. parameters?
Thanks in advance
* How to check the condition of the turbo on the temp. parameters?
Thanks in advance





RE: Exhaust gas Temperatures
The turbo _outlet_ temperature will be _much_ lower than the turbo inlet temp, because the gas loses energy to the turbo.
Mike Halloran
Pembroke Pines, FL, USA
RE: Exhaust gas Temperatures
rmw
RE: Exhaust gas Temperatures
Fact is that the Temp. after cilinders are about 490 degr C. Inlet of the Turbo's (V-engine) is about 530 degr.C. So where is the 40 degr C temp incr. is coming from???
RE: Exhaust gas Temperatures
When you first start the engine (idle) most of the exhaust is bypassing the turbine though waste gate and TIT will be lower than EGT. When you give engine more fuel the controller senses the change and closes the waste gate somewhat, which sends more exhaust through the turbine. The closing of the waste gate will cause the TIT to reach a point where it is hotter than the EGT, and they both go up together with nearly the same spread until you reach your max TIT.
This is a simplified explanation because there are several more things occurring. The location of the probes has an effect on readings, as well as the EGT can change from day to day. But after you get used to the system you can use to temps to troubleshoot the engine.
RE: Exhaust gas Temperatures
just a thought.
thanks
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