The exhaust gas temperature (EGT) pyrometer can be one of the most important gauges on a turbo-diesel-powered vehicle. It can warn the driver of situations that are potentially damaging to the engine, and it can also be used as a guide for optimizing fuel economy.
What is a safe EGT for a diesel?
The absolute maximum safe EGT range is debatable. Our universal rule of thumb, regardless of engine make/model/year, is to not exceed 1250° F and not to operate in the 1200° F – 1250° F range for an extended period of time.
What’s a good EGT temp?
For towing, we’d say a sustained 1,200 to 1,300 degrees is a safe number, with occasional spikes of up to 1,500 degrees when climbing grades being an acceptable risk. The concept of EGT is analogous to putting something in the oven. You can put your hand in a hot oven for a second or two, and nothing will happen.
What causes high exhaust temperatures in diesel engines?
MAN Diesel & Turbo
Fouling of the turbine side of the turbocharger is a common cause for high exhaust gas temperatures. The sequence of events is often as follows: → Fouling of turbine (coke deposit) → Bad turbocharger performance → Lower airflow and charge air pressure → Higher exhaust gas temperatures.
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How do I lower my diesel EGT?
In addition to lowering EGT, having cooler air entering the engine (post turbocharger) will increase horsepower as well. Aftermarket cold-air intake systems such as the Banks Super-Scoop can reduce EGT and also add power. Exhaust gas temperature is a funny thing.
What is the max EGT for Cummins?
It is Cummins opinion that the max EGT’s, whatever they may be, of the stock motors are safe for extended intervals. There are a more things to conside than just the EGT’s. Initial injection timing, dynamic inection timing, injection event timing, valve overlap, etc, all play to what we see as a final EGT.
How hot is too hot for a diesel engine?
You can run up to 220°F all day long without any problems. The fluid will last a long, long time at that temperature. You can run up to 250°F for up to a half hour at a time. Above 250°F you should find a safe place to stop and idle or fast idle in park or neutral to cool the trans.
How hot can you run a diesel engine?
The traditional thinking is that the “normal” sustained operating temperature range of oil in diesels is between 210 and 230 degrees Fahrenheit when towing.
Does an intercooler lower EGT?
While all intercoolers will lower intake air temperature and EGT, some aftermarket units will actually block flow-through to the heat exchangers behind them (namely the radiator). Trust us, achieving cooler EGT by increasing coolant temperature is not a fair trade.
What is the normal working exhaust temperature of a diesel engine?
Generally, temperatures of 500–700°C (932–1293°F) are produced in the exhaust gases from diesel-cycle engines at 100% load to 200–300°C (392–572°F) with no load. Exhaust gases normally discharges at a temperature of around 420°C (788°F).
What is the possible normal operating temperature for lubricating oil of a diesel engine?
Gas temperatures may exceed 3,000°F at the com- mencement of the working stroke, whereas the fire point of a typical, good quality, lubricating oil used as a cylinder lubricant is in the region of 460°F and thermal cracking occurs about 750°F.
What causes high exhaust engine temp?
Exhaust gas temperature naturally is high, since it’s a product of combusted fuel. Depends on the engine design and metal strength, the manufacturer always specify limits or rang of the exhaust gas temperature outlet. The limitations could be ranging from 300 – 500 maximum while on load.
What is a high exhaust temp?
At a stoichiometric air-fuel ratio, the exhaust gas temperature is different from that in a lean or rich air-fuel ratio. … High temperatures (typically above 1,600 °F or 900 °C) can be an indicator of dangerous conditions that can lead to catastrophic engine failure.
Will a bigger turbo lower EGTs?
A properly sized turbo will effectively lower egts all around… To big and you will notice higher egt’s until boost comes in and too small you will see high egt’s in the top end… A intercooler can help but no where near a properly sized turbo would.
Will a bigger exhaust lower EGT?
It lowers EGT’s because it allows the turbo to breathe better which helps get more of the exhaust gasses out. It’s better flowing. It’s important to keep egt’s cool cause if you don’t then you run the risk of melting a piston and damaging the motor.