Jump to main content or area navigation.

Contact Us

Clean Automotive Technology

Publications & Video Gallery

You will need Adobe Acrobat Reader to view the Adobe PDF files on this page. See EPA's PDF page for more information about getting and using the free Acrobat Reader.

Alternative Fuels Research

Cooperative Research and Development Agreements (CRADAs)

Engine Research

Top of page

Hydraulic Hybrid Research

Top of page

Video Gallery

Hydraulic Hybrid UPS Highlights

SUV Hydraulic Hybrid Highlights

Hydraulic Hybrid Bicycle Highlights

Why Hydraulic Hybrid Vehicles (HHVs)?

How it Works for Heavy-Duty

How it Works for Light-Duty

How a Gasoline HCCI Engine Works

Top of page

This page is maintained by EPA's Office of Transportation and Air Quality (OTAQ).
For more: About Us | Recent Additions | A-Z Index

Jump to main content.