Honda CR-V: Emissions Controls

The burning of gasoline in your vehicle’s engine produces several byproducts.

Some of these are carbon monoxide (CO), oxides of nitrogen (NOx), and hydrocarbons (HC).

Gasoline evaporating from the tank also produces hydrocarbons. Controlling the production of NOx, CO, and HC is important to the environment.

Under certain conditions of sunlight and climate, NOx and HC react to form photochemical ‘‘smog.’’ Carbon monoxide does not contribute to smog creation, but it is a poisonous gas.

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 The Clean Air Act

The United States Clean Air Act* sets standards for automobile emissions. It also requires that automobile manufacturers explain to owners how their emissions controls work and what to do to

 Crankcase Emissions Control System

Your vehicle has a positive crankcase ventilation system. This keeps gasses that build up in the engine’s crankcase from going into the atmosphere. The positive crankcase ventilation valve

 Evaporative Emissions Control System

As gasoline evaporates in the fuel tank, an evaporative emissions control canister filled with charcoal adsorbs the vapor. It is stored in this canister while the engine is off. After the en

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 How Your Front AirbagsWork

If you ever have a moderate to severe frontal collision, sensors will detect the vehicle’s rapid deceleration. If the rate of deceleration is high enough, the control unit will inflate the driver’s and front passenger’s airbags, at the time and with the force needed. During

 Front Passenger's Airbag Replacement

Removal 1. Disconnect the negative cable from the battery, and wait at least 3 minutes before beginning work. 2. Remove the passenger's vent panel. 3. Remove the dashboard center upper panel. 4. Remove the access panel (see step 5). 5. Detach the hook of the glove box damper and release the glov

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