Monolithic Three-way Palladium Catalytic Converters for Automobile Exhaust Emission Control

Catalytic converters for exhaust emission control of commercial equipment powered by internal combustion engines.

The development of PTX, monolithic catalytic exhaust purifiers, is outlined, and their first use for exhaust emissions control of commercial equipment is described. The main use of PTX converters is on forklift trucks. The purification achievable with PTX-equipped fork-lift trucks under various operational conditions is discussed, and examples from the field are given. During more than ten year...

Catalytic Converters and Other Emission Control Devices

Dynamic modeling of a three-way catalyst for SI engine exhaust emission control

| Automotive emissions are severely regulated. Since 1980, a three-way catalyst (TWC) has been used to convert harmful emissions of hydrocarbons, carbon monoxide, and oxides of nitrogen into less harmful gases in order to meet these regulations. The TWC's e ciency of conversion of these gases is primarily dependent on the mass ratio of air to fuel (A=F ) in the mixture leaving the exhaust manif...

Method for determining H2SO4 in automobile exhaust.

A relatively simple procedure for measuring H2SO4 in auto exhaust will be presented. The system is compatible with the Federal constant volume sampler (CVS unit). The time required to get sufficient sample for titration is 15-30 min. Values on sulfates in exhaust with a catalyst car and a noncatalyst car agree well with literature data obtained by dilution tube and filtration techniques.

Unsuccessful suicide by carbon monoxide: a secondary benefit of emissions control.

Emission systems and devices are required on automobile engines to reduce air pollution problems. Catalytic converters have been used on most 1975 and newer automobiles to reduce hydrocarbon and carbon monoxide (CO) emissions to a value that meets the Environmental Protection Agency requirements established for 1975 and 1976. The 1980-1981 Boise, Idaho, study shows that with a functioning catal...

Roadside Monitoring of Automobile Exhaust Gas Emission Using Tunable Diode Laser Absorption Spectroscopy

Vehicular air pollution affects both urban and town air quality all around the world. Air quality in many developing countries is deteriorating according to (WHO/UNEP 1992) report because these countries lack the resources to invest in emission control. Global air pollution problems have captured public attention, because of stratospheric ozone depletion and global warming. In response to globa...