What affects the efficiency of a catalytic converter?
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What affects the efficiency of a catalytic converter?
exhaust quality |
air/fuel ratio |
its temperature |
fuel quality |
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- What is the definition of actual air-fuel ratio?which of the following is an indicator of combustion efficiency and not emission?Technician A says that the catalytic converter is used only to quiet the noise of the exhaust. Technician B says that the catalytic converter is used to alter the contents of the engines exhaust. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor B
- Explain the steps involved in disconnecting a fuel line on a vehicle Multi port direct injection Gasoline direct injectionWhich emission control system introduces exhaust gases into the intake air to reduce the formation of NOXin the combustion chamber? EVAP EGR Air injection PCVA rich air-fuel ratio causes HC emissions to ________.
- Explain engine emission control by three-way catalytic converter system.1) Which one of the following is an undesirable byproduct of combustion in IC engines that is caused due to high temperature conditions? O Unburnt hydrocarbons. O Soot O Carbon monoxide. O Oxides of nitrogen. 2) Which one of the following statements is true about emissions from Sl engines? OA rich fuel-air mixture decreases the tendency for more HC emissions ONOX emissions would be maximum at a slightly rich mixture O NOx emissions decrease as the fuel-air mixture becomes either too rich or too lean. OA lean fuel-air mixture increases the tendency for more CO emissions 3) Which one of the following is correct about HC emission? O t is reflective of complete combustion of fuel. It results due to improper mixing of fuel and air O Unburnt HCs do not contribute to photochemical smog. O It decreases as the fuelair mixture becomes too leanA restricted catalytic converter can cause all of the following except. a. stalling after the engine starts b. popping or backfiring through the intake manifold c. a drop in engine vacuum d. increased power at high speeds