Fuel system for a vehicle

A natural gas system for a vehicle, the natural gas system comprising:

• a tank configured to provide a supply flow of natural gas;
• a regulator valve controllable to provide a regulated flow of natural gas to an engine by modulating the supply flow of natural gas;
• a first conduit extending between the tank and the regulator valve such that the supply flow of natural gas is received by the regulator valve from the tank;
• a second conduit configured to extend from the regulator valve to the engine such that the regulated flow of natural gas is provided from the regulator valve to the engine, wherein the regulated flow of natural gas is not diverted from the second conduit at any point along a length of the second conduit;
• a shutoff valve positioned along the second conduit, the shutoff valve controllable to selectively disengage the engine from the natural gas system;
• a controller having programmed instructions to control the shutoff valve;
• and
• a user access panel located on an external surface of the vehicle, wherein the user access panel comprises a manual shutoff valve selectively engageable to block the supply flow of natural gas provided by the tank and a pressure gage corresponding to a pressure of the first conduit.

A vehicle comprising:

• an engine;
• and
• a natural gas system including:
• a tank configured to provide a supply flow of natural gas;
• a regulator controllable to provide a regulated flow of natural gas to the engine by modulating the supply flow of natural gas;
• a first conduit extending between the tank and the regulator such that the supply flow of natural gas is received by the regulator from the tank;
• a second conduit extending between the regulator and the engine such that the regulated flow of natural gas is provided from the regulator to the engine;
• a shutoff valve positioned along the second conduit, the shutoff valve controllable with a controller to selectively disengage the engine from the natural gas system;
• a manual shutoff valve selectively engageable to block the supply flow of natural gas provided by the tank;
• and
• a user access panel located on an external surface of the vehicle, wherein the user access panel comprises the manual shutoff valve and a pressure gage corresponding to a pressure of the first conduit.