Compressed natural gas vehicle safety system and method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9434329
SERIAL NO

14194131

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Importance

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Abstract

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A multiply-redundant system that prevents a driver from starting and/or moving a vehicle if a compressed natural gas fill system is not correctly and completely disconnected from the vehicle. One or more sensors in combination with one or more optional microswitches combine to lock-out the vehicle's ignition or otherwise prevent it from starting and/or moving. For different levels of safety, different combinations of sensors can be used with the lowest level having a single proximity sensor sensing the presence or absence of a high-pressure fill hose. The highest level of safety being achieved by having separate proximity sensors on the fuel fill hose fitting, the gas cap cover and a manual safety valve along with a redundant microswitch. An optional override that may be restricted as to the number of times it can be used can allow starting with a faulty sensor in order to allow maintenance.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
McNicholas, Daniel Oak Lawn, US 15 38

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