Engineering Professors Develop Electric Hybrid Vehicle Concept for RV Travelers

Sep 14, 2009
Engineering Professors Develop Electric Hybrid Vehicle Concept for RV Travelers
Drs. Steve Shepard Jr. (left) and Steve Shepard Sr. in front of their RV.

While the cost of fuel has put a damper on the travel plans of many Americans, one father-son engineering duo with a passion for RV travel is combating the problem by conceptualizing an electric-hybrid passenger vehicle with the ability to improve fuel economy and increase the acceleration of the motor home towing it.

Dr. Steve Shepard Jr., associate professor of mechanical engineering at The University of Alabama, and his father, Dr. Steve Shepard Sr., a former faculty member and researcher at Mississippi State University, developed the idea for a hybrid dinghy pusher after the cost of fuel curtailed both families’ traveling plans.

In this concept, the dinghy consists of a hybrid SUV towed by the RV. When driven as a standard automobile, the SUV operates as a fully-functional . When towed behind a RV, the SUV switches into the hybrid dinghy pusher mode, where only the electrical portion of the hybrid-SUV is utilized. The hybrid dinghy pusher, known as a HDP, works by going into generator mode and storing energy when going downhill, and energy previously stored in the batteries is used to help push the motor home up-hill. The previously stored in the hybrid dinghy pusher can also be used to help accelerate the motor home more quickly from a stop or while just driving down the road.

A conventional hybrid SUV is adapted to utilize its electric system to recycle energy when being towed. The HDP’s on board motors provide propulsion during acceleration and act as electric generators during braking. The assistance provided to the motor home by the HDP is not meant to replace the propulsion provided by the motor home engine; it simply supplements it to improve acceleration and reduces wear on the RV engine. Unlike typical towed dinghies, motor homes towing an HDP would experience a decrease in fuel consumption and an increase in acceleration performance.

According to Shepard, hybrid motor homes are just now coming onto the market, and they are expensive. Besides being a cheaper alternative to a hybrid motor home, the greatest advantage of this new concept is that the HDP not only assists the motor home in transit, but it also provides the motor home owners with a hybrid vehicle to drive after arriving at their destination. Other advantages of implementing such a system are improved gas mileage, reduced rate of wear on brake components, and improved mobility for users of RVs and the dinghy.

Working with UA’s Office for Technology Transfer, the Shepards are in the process of securing a development partner to bring this cutting-edge technology to the market. UA originally filed a U.S. provisional patent application, which has since been converted to a full utility patent application.

Provided by University of Alabama

Explore further: Environmentally compatible organic solar cells

add to favorites email to friend print save as pdf

Related Stories

Hybrid Bus in the City: A Prototype with a Future

Aug 20, 2007

Nuremberg’s public transport system has become more "electrified" thanks to a diesel-electric hybrid bus developed by MAN. The vehicle is equipped with drive-system technology from Siemens.

Software eases flow to fluid power trucks

Dec 24, 2008

Eaton Corporation is using IBM modeling software to develop series hydraulic hybrid systems. Replacing a vehicle’s conventional drive train and transmission, the series hydraulic hybrid (SHH) system promises dramatic fuel ...

SpaceDev Awarded Patent For Hybrid Propulsion Technology

Aug 15, 2006

SpaceDev has been issued a United States patent for its hybrid propulsion technology. The U.S. Patent Office issued U.S. Patent No. 7,069,717, entitled "Hybrid Propulsion System," to SpaceDev for technology related to fine ...

Recommended for you

Tiny power plants hold promise for nuclear energy

15 minutes ago

Small underground nuclear power plants that could be cheaper to build than their behemoth counterparts may herald the future for an energy industry under intense scrutiny since the Fukushima disaster, the ...

Obama launches measures to support solar energy in US

47 minutes ago

The White House Thursday announced a series of measures aimed at increasing solar energy production in the United States, particularly by encouraging the installation of solar panels in public spaces.

Tailored approach key to cookstove uptake

1 hour ago

Worldwide, programs aiming to give safe, efficient cooking stoves to people in developing countries haven't had complete success—and local research has looked into why.

Wireless power transfer achieved at five-meter distance

1 hour ago

The way electronic devices receive their power has changed tremendously over the past few decades, from wired to non-wired. Users today enjoy all kinds of wireless electronic gadgets including cell phones, ...

Environmentally compatible organic solar cells

Apr 16, 2014

Environmentally compatible production methods for organic solar cells from novel materials are in the focus of "MatHero". The new project coordinated by Karlsruhe Institute of Technology (KIT) aims at making ...

User comments : 5

Adjust slider to filter visible comments by rank

Display comments: newest first

JackC
4 / 5 (1) Sep 15, 2009
This article states that the energy produced by towing the SUV, and thus running the generator, will result in RV getting better mileage while towing a 3 or 4 thousand pound SUV than it would get just moving itself. This implies that the energy provided by the SUV will be greater than the energy provided by the RV to charge it, let alone tow it.
Even if the energy could be stored and reclaimed with 100% efficiency, this wouldn't make any sense. This sounds like a mobile perpetual motion machine, or am I missing something here?
alexxx
2 / 5 (1) Sep 15, 2009
... This implies that the energy provided by the SUV will be greater than the energy provided by the RV to charge it, let alone tow it.
...This sounds like a mobile perpetual motion machine, or am I missing something here?


Only if it runs downhill - and that won't be perpetual motion machine
david_42
4 / 5 (1) Sep 15, 2009
I see some major problems building a towing hitch that would transmit enough force to make this worth while. Also, the amount of power the hybrid could contribute is a small fraction of a typical RVs'. Finally, most RV drivers would just use the additional power to drive faster on hills, negating any possible savings.
Lord_jag
not rated yet Sep 16, 2009
Finally, most RV drivers would just use the additional power to drive faster on hills, negating any possible savings.


Yeah but that's a pretty big benifit itself. Well worth the investment.
jerryd
not rated yet Sep 19, 2009

This is just silly. The benefit if far too small. Far better would be towing a Prius instead of the gas guzzler.

More news stories

Tailored approach key to cookstove uptake

Worldwide, programs aiming to give safe, efficient cooking stoves to people in developing countries haven't had complete success—and local research has looked into why.

A sharp eye on Southern binary stars

Unlike our sun, with its retinue of orbiting planets, many stars in the sky orbit around a second star. These binary stars, with orbital periods ranging from days to centuries, have long been the primary ...