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Title: A Hybrid Natural Gas Vehicle
Author: Tiff T. Nelson
Source: American Gas Association 1990
Year Published: 1990
Abstract: Keeping up with the ever changing California emission requirements is an important part of San Diego Gas & Electrics (SDG&E) business. It touches all aspects of company operation. To reduce emissions in its vehicle fleet, SDG&E has instituted a program of converting certain vehicles to compressed natural gas (CNG) fuel. By demonstrating the emission reductions and operating and maintenance cost savings that NG vehicles can generate, SDG&E will be acting as a pathfinder for other vehicle fleet operators in its service territory as anticipated tighter emission controls on California vehicles are enacted. In parallel with ihe CNG conversion program, the Research, Development and Demonstration (RD&D) Department of SDG&E is developing a prototype natural-gas-powered hybrid vehicle that offers the potential for even lower emissions than the CNG conversions. The hybrid vehicle concept is a spinoff from all-electric vehicles, which are performance and range limited by current battery technology It is based around replacing most of the electric vehicles battery pack with a small, light-weight engine-driven electric power supply.




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