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CHEVRON RECEIVES FIRST CARB CERTIFICATION FOR REDUCED-EMISSIONS DIESEL FUEL MEETING 1993 RULES

 CHEVRON RECEIVES FIRST CARB CERTIFICATION
 FOR REDUCED-EMISSIONS DIESEL FUEL MEETING 1993 RULES
 SAN FRANCISCO, June 2 /PRNewswire/ -- Chevron U.S.A. Products Company received the first certification from the California Air Resources Board (CARB) for a reduced-emissions formulation that meets CARB's 1993 diesel fuel rules, Dave Hoyer, president of Chevron U.S.A. Products Company, announced today.
 "By effectively developing a fuel formulation that meets the 1993 rules, we hope that this will start to relieve customers' anxiety over the adequacy of diesel fuel supply," said Hoyer.
 The formulation certified by CARB not only passed the stringent CARB equivalency test for oxides of nitrogen and particulate matter, but performed better than the reference fuel in several additional, important respects, including total hydrocarbon and carbon monoxide emissions.
 "Even though Chevron has filed for a patent on the formulation, we are making the formulation public and are prepared to offer the rights to other California producers," Hoyer said. "We are doing this to reaffirm Chevron's commitment to improving air quality and to allow other diesel fuel producers flexibility in complying with the CARB rule."
 This new formulation has 19 percent aromatic hydrocarbons, very low sulfur and a cetane rating of 58. Cetane is a measure of the ability of a diesel fuel to spontaneously ignite inside the engine's combustion chamber.
 Research done by Chevron and others clearly demonstrates that improved fuel cetane brings with it more air quality benefits than reduced aromatic hydrocarbon content by itself.
 Research work was carried out at Chevron Research and Technology Company in Richmond, Calif., and involved testing many different diesel fuel compositional variables in a diesel engine similar to the one required by CARB for actual certification.
 "If the current specter of insufficient supplies becomes reality, then CARB may have to reconsider the 1993 rule," said Hoyer. "Chevron now urges CARB to clear away the uncertainties so that we and others can proceed with orderly development and commercialization of low- aromatics diesel."
 -0- 6/2/92
 /CONTACT: Bonnie Chaikind, 415-894-1200; Sherri Zippay,


415-894-4581; or Mike Libbey, 415-894-4440, all of Chevron Corp./
 (CHV) CO: Chevron U.S.A. Products Company ST: California IN: OIL SU:


MC-DG -- SF001 -- 6238 06/02/92 13:00 EDT
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Publication:PR Newswire
Date:Jun 2, 1992
Words:367
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