Hyundai Accent Manuals

Hyundai Accent: Description and Operation - Exhaust Emission Control System - Emission Control SystemHyundai Accent: Description and Operation

Description

Exhaust emissions (CO, HC, NOx) are controlled by a combination of engine modifications and the addition of special control components.
Modifications to the combustion chamber, intake manifold, camshaft and ignition system form the basic control system.
These items have been integrated into a highly effective system which controls exhaust emissions while maintaining good drivability and fuel economy.
Air/Fuel Mixture Control System [Gasoline Direct Injection (GDI) System]
The GDI system uses signals from the heated oxygen sensor to activate and control the injector installed in the manifold for each cylinder, thus precisely regulating the air/fuel mixture ratio and reducing emissions.
This in turn allows the engine to produce exhaust gas of the proper composition to permit the use of a three way catalyst. The three way catalyst is designed to convert the three pollutants [hydrocarbons (HC), carbon monoxide (CO), and oxides of nitrogen (NOx)] into harmless substances. There are two operating modes in the GDI system.
1.
Open Loop air/fuel ratio is controlled by information pre-programmed into the ECM.
2.
Closed Loop air/fuel ratio is constantly adjusted by the ECM based on information supplied by the oxygen sensor.

Exhaust Emission Control System
...

Catalytic Converter. Description and Operation
Description The catalytic converter of the gasoline engine is a three way catalyst. It oxidizes carbon monoxide and hydrocarbons (HC), and separates oxygen from the oxides of nitrogen (NOx). ...

See also:

Brake Booster Operating Test
For simple checking of the brake booster operation, carry out the following tests. 1. Run the engine for one or two minutes, and then stop it. If the pedal depresses ...

This device complies with Part 15 of the FCC rules.
Operation is subject to the following two conditions: 1.This device may not cause harmful interference, and 2.This device must accept any interference received, including interference that may cau ...

Steering mounted controls - Type 1
Radio: Select the previous/next preset radio station. Select the previous/next item in a menu or a list. Media: Select the previous/next track. Select the previous/next item in a menu or a list. R ...

Hyundai Accent Manuals


В© 2011-2022 Copyright www.hamanual.com