1 / 5

Enhancing CNG Vehicle Specifications: PG&E's Supportive Comments

Read PG&E's insightful comments on CARB's CNG motor vehicle specifications, addressing performance, compositional standards, and regulatory considerations for cleaner air quality.

crystalh
Download Presentation

Enhancing CNG Vehicle Specifications: PG&E's Supportive Comments

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Comments to the CARB Draft Proposed Concept – CNG Motor Vehicle Specifications Tony Estrada CAT Senior Program Manager PG&E August 3, 2005

  2. Introduction • PG&E supports CARB’s objectives in providing compliance flexibility in meeting the CNG motor vehicle specifications while ensuring: • Existing & new technology engines are protected • No significant degradation in air quality occurs. • PG&E supports the concept that the current CNG motor vehicle specifications have to move away from prescriptive gas compositional standards and instead address motor vehicle performance & emission standards. • PG&E believes that the CPUC should be the primary lead agency in regulating natural gas quality specifications.

  3. Comments-Performance & Compositional Specifications • CARB proposal of statewide minimum MN 80 specification • PG&E agrees with this proposal. • CARB proposal of a regional minimum MN 73 specification • PG&E agrees with this proposal. • CARB proposal of “TBD” Wobbe Index specification • PG&E recommends that the CARB CNG spec not include a Wobbe Index spec since this appliance-related item is being addressed in the CPUC gas quality proceedings.

  4. Comments-Performance & Compositional Specifications (cont’d) • CARB proposal of max C4+ specification of 1.5 % • PG&E recommends removing this specification since the MN specification already includes the impact of the heavy hydrocarbons in the fuel’s MN calculation. • Otherwise, this somewhat redundant spec defeats the purpose of the MN spec. • CARB proposal of max inerts specification of 4 % • PG&E recommends removing this specification since it is being addressed in the CPUC gas quality proceedings. • Otherwise, the need for this spec needs to be substantiated.

  5. Additional Comments • PG&E supports the concept of granting a statewide CNG vehicle fuel spec exemptions to: • Light Duty CNG vehicles • CNG Residential Fueling Appliances • PG&E supports research & additional testing to provide the technical basis for CARB specifications.

More Related