owners manual Honda Prelude

owners manual Honda Prelude - year of production: 1987, 1988, 1989, 1990, 1991 - Honda Prelude III 3 owners manual EN

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text version of content this owner's manual page from owners manual to the vehicle Honda Prelude, year of production 1987 - 1991:

Main Menu ▲ ▼ Emission Controls (cont'd) Intake Air Temperature Control System (2.0 S) The air control valve mounted inside the air cleaner snorkel automatically opens and closes according to the intake air temperature. The carburetor then receives air of constant temperature which results in lower exhaust emissions. Carburetor Controls (2.0 S) —Throttle controller — This system controls the throttle during gear shifting, reducing the amount of HC caused by unburned fuel mixture. — Choke opener — When starting a cold engine, this device opens the choke slightly. This reduces the amount of HC and CO. — Altitude Compensation devices — The Air Jet Controller (AJC) has an atmospheric pressure sensing bellows. The AJC is designed to control the amount of additional air fed to the carburetor jets to maintain good driveability at any altitude. Ignition Timing Control System This system automatically controls the ignition timing to reduce the amount of HC and NOx. Exhaust Gas Recirculation (EGR) [Except California 2.0 S models] The EGR system is designed to control the formation of oxides of nitrogen (NOx) caused when fuel mixture burns at high temperature. It works by recirculating exhaust gas through the EGR valve and intake manifold into the combustion chambers where it reduces peak temperature by diluting the air/fuel mixture. Catalytic Converter The catalyst is used to convert hydrocarbons (HC), carbon monoxide (CO) and oxides of nitrogen (NOx) in the exhaust gas, 2 2 to carbon dioxide (CO), dinitrogen (N) and water vapor.

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year of production from: 1987

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