Methods and systems for compressed natural gas (CNG)

摘要

Provided is a compressed natural gas (CNG) fuel system that can include a frame and at least one container. The frame can include a first side and a second side, with each side being configured to partly define a portion of an interior space. The at least one container can be configured to house or contain CNG and can be engaged to and partly encased by the frame. The at least one container can be partly located within the interior space of at least one of the first side or the second side. The frame assembly can be engaged to a chassis of a vehicle such that the at least one container is located either at least partially underneath a cab of the vehicle or at least partially behind a cab of the vehicle.

主权项

1. A compressed natural gas fuel system that is configured to store or deliver compressed natural gas to an engine of a vehicle, comprising:
a frame assembly that supports and partly encases at least one container, wherein the container houses compressed natural gas; a chassis of a vehicle; one or more mounting brackets that couple the frame assembly to the chassis of the vehicle, wherein at least one damper is engaged between the frame assembly and the chassis of the vehicle; the frame assembly is coupled to the vehicle via the one or more mounting brackets at a location on the chassis such that the at least one container is located at least partially rearward of a cab of the vehicle; the frame assembly further includes a first side that defines a first interior space which partly encases a first container and a second side that defines a second interior space; a first regulator that increases a pressure of flow of the compressed natural gas to a first pressure level prior to receipt at an engine of the vehicle; a second regulator that increases the pressure of flow of the compressed natural gas to a second pressure level that is between zero and the first pressure level prior to receipt at the first regulator; and the first regulator receives the compressed natural gas from the second regulator at the second pressure level and increases the pressure of flow of the compressed natural gas from the second pressure level to the first pressure level prior to receipt at the engine of the vehicle.