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Report by the Committee on Motor Vehicle Emissions (1973) / Chapter Skim
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Summary
Pages 1-5

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 1...
... Determination of the feasibility of developing and designing an emissions control system that would enable compliance with the legally established emissions standards as judged by the certification procedures prescribed by the EPA.
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From page 2...
... These are: the modified conventional engine equipped with an oxidation catalyst, the carbureted stratified-charge engine, the Wankel engine equipped with an exhaust thermal reactor, and the diesel engine. For the catalyst system, one catalyst change must be permitted during the SO,OOO mile durability testing for certification, and fuel with a suitably low level of catalyst poisons must be allowed.
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From page 3...
... First, there are no data concerning the deterioration of emission-control systems under conditions of customer use, and the Committee believes that the certification procedure alone is not a sufficient indicator of system durability. Even if it is demonstrated that properly maintained vehicles can comply with the standards under conditions of customer use, an adequate vehicle mnintenance and inspection system will be required to assure that most vehicles will meet the standards when used by the general public; this is especially important for catalyst-equipped vehicles.
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From page 4...
... Five control systems now in early stages of development have met the 1976 "mission standards at low mileage. These are: the modified conventional engine equipped with dual catalysts, or with dual catalysts plus thermal reactor, or with two thermal reactors and a reduction catalyst, or with a three-way catalyst and electronic fuel injection, and the stratified-charge engine employing fuel injection and equipped with an oxidation catalyst.
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From page 5...
... Average annual costs of a dual-catalyst em~ssions-control system, including maintenance and fuel, with the increase in sticker price amortized over five years, is estimated to be $260 per year, compared with a 1970 model year vehicle. In contrast, the annualized costs for several other systems are estimated to be less than $100.
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Key Terms

  • engine equipped
  • diesel engine
  • emissions standards
  • sticker price
  • motor vehicles

  • emissions control
  • modified conventional
  • properly maintained
  • motor vehicle
  • durability testing

  • thermal reactor
  • oxidation catalyst
  • dual catalysts
  • conventional engine
  • vehicle emissions

  • fuel injection
  • electronic fuel
  • carbon monoxide
  • fuel penalty
  • wankel engine

  • lesser increases
  • amedments empowers
  • comprehensive study
  • technological feasibility
  • annual costs

  • air act
  • emission test
  • catalyst poisons
  • customer usage
  • vehicle mnintenance


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