Refuse vehicle having tailgate-mounted CNG tanks

A fuel system for a vehicle, comprising:

• a CNG fuel tank configured to provide fuel to power an engine of the vehicle;
• a shutoff valve configured to be positioned along a flow path between the CNG fuel tank and the engine, wherein the shutoff valve is configured to selectively restrict a flow of fuel along the flow path;
• a sensor configured to monitor an operating condition of the vehicle including a temperature sensor positioned to monitor a temperature of at least one of the engine and an internal volume of a body of the vehicle;
• and
• a controller coupled to the sensor and the shutoff valve, wherein the controller is configured to at least one of engage and disengage the shutoff valve to restrict the flow of fuel from the CNG fuel tank to the engine in response to the temperature of the at least one of the engine and the internal volume exceeding a temperature threshold.

A fuel system for a vehicle, comprising:

• a CNG fuel tank configured to provide fuel to power an engine of the vehicle;
• a shutoff valve positioned along a flow path between the CNG fuel tank and the engine, wherein the shutoff valve is configured to selectively restrict a flow of fuel along the flow path;
• a pressure sensor positioned along the flow path and configured to monitor a pressure of the flow of fuel;
• a temperature sensor positioned to monitor a temperature of at least one of the engine and an internal volume of a body of the vehicle;
• and
• a controller coupled to the pressure sensor, the temperature sensor, and the shutoff valve, wherein the controller is configured to:
• identify a pressure fault condition in response to the pressure of the fuel falling below a pressure threshold;
• at least one of engage and disengage the shutoff valve such that the shutoff valve restricts the flow of fuel in response to the pressure fault condition;
• identify a temperature fault condition in response to the temperature of at least one of the engine and the internal volume exceeding a temperature threshold;
• and
• at least one of engage and disengage the shutoff valve such that the shutoff valve restricts the flow of fuel in response to the temperature fault condition.