Why do catalytic converters work best at high temperatures

While catalytic converters don’t eliminate air pollution, they can be instrumental in reducing immediate, localized air pollution, including pollution from roadways. Catalytic converters also work best when they’re warm, which takes about 10-15 minutes of driving or idling. This means your car may still churn out emissions for the first few minutes of a trip.

One problem is that they only really work at high temperatures (over 300°C/600°F or so), when the engine has had chance to warm up. Early …

What Is A Catalytic Converter And Why Do You Need One?


Catalytic converters work best when at high temperature, so a precat is a smaller version found higher up the exhaust system to help break down emissions at start-up when the engine is running …

The critical temperature that the catalytic converter must reach depends on the material used: the precious metals platinum and palladium …

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Why is a catalytic converter so important?

To understand why having a catalytic converter on an engine is so important, it’s essential first to understand why and how engines make pollution. Car engines run on diesel or gasoline, both of which are made from petroleum. Petroleum, in turn, is comprised of hydrocarbons.

What happened before catalytic converters?

Before catalytic converters were developed, waste gases made by a car engine blew straight down the exhaust tailpipe and into the atmosphere.

What does the coach do in a catalytic converter?

The coach doesn’t run anywhere; he just stands there, waves his arms about, and makes the runners speed up. In a catalytic converter, the catalyst’s job is to speed up the removal of pollution. The catalyst is made from platinum or a similar, platinum-like metal such as palladium or rhodium.

Are catalytic converters efficient at converting carbon monoxide?

Chart: Catalytic converters only become efficient at high operating temperatures. This chart shows the efficiency of a typical device at converting carbon monoxide at a range of different temperatures. Nitrogen oxides are converted with slightly higher efficiency and hydrocarbons with slightly less efficiency.

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How Hot Does A Car Exhaust Get? Video Answer

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