HHP Summit 2017

Richard Wallace

CNG? Why Not Put It on the Roof?

August 10, 2014 in CNG, NGVs, Technology by Rich Piellisch  |  No Comments

NGV Advocate Seeks Crowdfund Coin to Develop the Equipment

It’s been done for decades on buses so why not cars? Fuel tanks on the roof of a compressed natural gas-gasoline bi-fuel vehicle could extend money-saving CNG range without sacrificing interior space, argues Richard Wallace, a longtime natural gas vehicles advocate who is seeking money to develop such a product. updated with additional photo on August 12

Photo posted with Wallace’s Kickstarter solicitation shows the general idea of a recent-make SUV with a roof case. ‘No inference should be made that the CNG tank roof case described herewith will resemble this case,’ it states. ‘It won’t.’

Photo posted with Wallace’s Kickstarter solicitation shows the general idea of a recent-make SUV with a roof case. ‘No inference should be made that the CNG tank roof case described herewith will resemble this case,’ it states. ‘It won’t.’

He’s working through the crowdfunding site Kickstarter.com to raise $25,000 by September 12. The crowdfund money will support a pending award of $35,000 from the State of Pennsylvania, he says, and will be returned if the grant is not finalized.

Wallace’s target is a roof-mounted array that can hold 8 gasoline gallon equivalents of CNG – enough for the driver of a bi-fuel vehicle to be able to take advantage of low-price CNG without undue worry about availability.

‘Not Inside, Not Underneath, Not in the Pickup’s Bed’

The CNG case should add no more than one foot to the height of the vehicle, weigh about 200 pounds, and be adaptable to the roof lines of different vehicle models. It’s to be esthetically pleasing, “weather-tight and quiet at speed,” and designed so that it will not leak if it’s knocked off in an accident.

It has been done before .. photo courtesy Richard Wallace

It has been done before .. photo courtesy Richard Wallace

“I want the added CNG tanks mounted on the vehicle’s roof – not inside, not underneath, and not in the pickup’s bed,” Wallace says.

Using commercially available fittings and such technologies as 3-D printing for the exterior case, “This project aims to design and rapid-prototype our own roof-mount solution in a few months.”


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Source: Richard Wallace with Fleets & Fuels follow-up



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