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Car Exhaust and Emissions
This section can help you keep your exhaust system working properly. Learn how mufflers, catalytic converters and oxygen sensors work.
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Dieselgate and the Volkswagen Cartel
Have the right Volkswagen execs paid for lying to the public about their car's environmental standards and emissions?
Diesel Isn't Always a Worse Polluter Than Gasoline
Whether diesel- or gasoline-powered cars spit out more toxins depends on the pollutant measured, a new study says.
How Coal Rollers Work
In a truck pull competition, excessive clouds of diesel smoke are a byproduct of the truck's functionality. But coal rollers have taken this idea from the county fair to the public roads -- all in the name of making people angry.
How much air pollution comes from cars?
You see it every time that smoke billows from your car's exhaust pipe, so there's no denying that vehicles are major contributors to air pollution.
Top 7 Ways to Reduce Your Driving Emissions without Reducing Quality of Life
Here are seven easy ways to reduce your emissions without affecting the quality of your daily commute. Learn more about the top 7 ways to reduce your driving emissions without reducing quality of life.
What can you do to reduce your car's emissions?
To reduce your cars emissions, you can help its catalytic converter work more efficiently by preheating it, or you can inject a urea solution into your exhaust pipe. Learn what you can do to reduce your car's emissions in this article.
Can we make tailpipes that capture CO2?
It seems like a logical answer to the climate crisis: capture the carbon dioxide that our cars emit. Is it that simple? And what do sand and silica have to do with it?
Why is there a bulge in the exhaust pipe of my dirt bike?
I have a dirt bike and the exhaust pipe has this big bulge in it near the engine. What is the bulge for?
How Mufflers Work
Every car out there has a muffler -- it performs the crucial job of turning thousands of explosions per minute into a quiet purr. Mufflers use some cool technology to dim the roar of an engine. Learn the principles that make it work.
How Catalytic Converters Work
A catalytic converter is one of the most important parts of a car's emissions control system. It treats the exhaust before it leaves the car and removes a lot of the pollution. Learn how they work.
How do I know if my catalytic converter has failed?
Exhaust emissions test check for the absence of a catalytic converter or a malfunctioning one during an emissions inspection. Read on to learn how you can find out if your catalytic converter has failed.
What is a catalytic converter and how does it work?
If you have a vehicle that needs to be tested for emissions, you might want to check on the condition of your catalytic converter. So what is it and what does it do?
How does the oxygen sensor in a car work?
An oxygen sensor in a car is a very important part of making your engine run smoothly. Learn what it does and what can happen if your oxygen sensor fails.
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