How do hybrid cars and trucks work

The document describes how hybrid vehicles combine internal combustion engines with electric motors and batteries to improve fuel efficiency and reduce pollution. It details specific features such as idle-off, regenerative braking, power assist, and electric-only drive, while contrasting plug-in hybrids with battery electric and hydrogen fuel cell vehicles.

• Hybrid vehicles improve fuel efficiency and reduce pollution by combining a conventional internal combustion engine with an electric motor and battery.
• Hybrids employ several specific technical features to save fuel: 'idle-off' shuts down the engine when stopped; 'regenerative braking' captures kinetic energy as electricity; 'power assist' allows for smaller, more efficient engines; and 'electric-only drive' enables operation without the combustion engine, particularly at low speeds for non-plug-ins or for 10 to 30 miles for plug-in hybrids.
• The document distinguishes between different electric vehicle (EV) types: plug-in hybrids, battery electric vehicles (which lack combustion engines), and hydrogen fuel cell vehicles (which convert hydrogen gas to electricity).
• Hydrogen fuel cell vehicles provide fast refueling and long ranges but are limited by the lack of widely available refueling stations and a small number of available passenger models.

APA

Union of Concerned Scientists (2013). How do hybrid cars and trucks work. https://www.ucs.org/resources/how-do-hybrid-cars-and-trucks-work

Chicago

Union of Concerned Scientists. How do hybrid cars and trucks work. 2013. https://www.ucs.org/resources/how-do-hybrid-cars-and-trucks-work.

Wikipedia

{{cite report |author=Union of Concerned Scientists |title=How do hybrid cars and trucks work |date=12 November 2013 |url=https://www.ucs.org/resources/how-do-hybrid-cars-and-trucks-work |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{unionofconcernedscientists2013how, author = {{Union of Concerned Scientists}}, title = {{How do hybrid cars and trucks work}}, institution = {Union of Concerned Scientists}, year = {2013}, month = nov, url = {https://www.ucs.org/resources/how-do-hybrid-cars-and-trucks-work}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }