What is the general temperature of an exhaust pipe?
3 Answers
Generally, at an exhaust pressure of 20kg, the exhaust temperature is around 90 degrees. Below is relevant information about exhaust pipe temperatures: 1. Depending on the vehicle model: The outlet temperature of the final exhaust pipe varies based on different vehicle models, the length of the exhaust pipe, and the number of mufflers. Typically, the exhaust pipe temperature of small family cars ranges between 30–120 degrees. Some modified cars can even have exhaust pipes that emit flames, with outlet temperatures reaching several hundred degrees. 2. Exhaust pipe length: The longer the exhaust pipe, the lower the outlet temperature at the tail end. Additionally, higher engine speeds result in higher exhaust temperatures. At idle, the outlet temperature is only around 30–50 degrees. 3. Engine temperature: The temperature from the engine to the exhaust manifold is 800–900 degrees. After passing through the front catalytic converter, it drops to 600–700 degrees. The temperature at the middle section of the muffler decreases to about 200–300 degrees, while at the tail section of the muffler, it is around 150 degrees. After cooling through the muffler baffle, the exhaust gas temperature is slightly above ambient, about 20–50 degrees.
I often discuss exhaust pipe temperatures with friends, as driving safety is always the top priority. Typically, the temperature ranges between 100 to 600 degrees Celsius, depending on your driving style. At idle, it might be around 100 degrees, but after high-speed driving, it can soar to over 500 degrees. High temperatures are usually due to engine combustion heat, especially around the catalytic converter, which can reach 400 to 700 degrees. I've seen many cases where the exhaust system still emits heat smoke after parking, and children can easily get burned if they touch it, so it's best to keep people away from the rear of the car after stopping. Also, regularly check for rust on the exhaust pipe, as temperature fluctuations can accelerate aging and avoid issues like igniting fallen leaves in winter due to sudden stops. In short, understanding temperature changes helps make driving safer.
I've been driving long distances for years, and exhaust temperatures typically range from 150 to 400 degrees. During cold starts, it's lower, rising to over 80 degrees after a minute; it can exceed 250 degrees when going uphill or in city traffic congestion, and the tailpipe can reach around 550 degrees after high-speed runs. I've personally measured 390 degrees at my car's tailpipe using an infrared thermometer. High temperatures indicate decent engine efficiency, but excessively high temps might suggest a clogged exhaust system or damaged muffler—I often check when I smell burning. New drivers should remember that temperatures rise quickly with speed, so avoid touching the exhaust pipe right after driving to prevent burns. Regular maintenance, like cleaning and leak prevention, can help stabilize temperatures.
