Abstract: A pressure-reducing regulator for CNG fuel includes a high pressure sensor that detects fuel pressure at an inlet, a filter element that filters fuel, an orifice that provides access to a pressure reduction chamber, and a movable pintle located within the orifice, such that a flow rate of fuel through the orifice varies according to a position of the pintle within the orifice. The pressure-reducing regulator further includes a motor that moves the pintle, a low pressure sensor that detects fuel pressure at an outlet and a control unit comprising a processor. The process is configured for reading data from the high pressure sensor, data from the low pressure sensor and vehicle data from an engine, calculating a desired position of the pintle based on the sensor data and the vehicle data, and transmitting a signal to the motor for moving the pintle to the desired position.

Abstract: A system for providing monitoring of HVAC systems includes a database comprising a plurality of computing device records, and a plurality of technician records. The system further includes a computing device connected to the HVAC system, the computing device comprising a network interface device, an optical sensor located adjacent to one or more light emitting devices of the HVAC system, and a processor for reading the sensor data from the optical sensor and transmitting the sensor data to a server. The system further includes a server for receiving the sensor data, finding a technician within the vicinity that can service the HVAC system and sending a message to the technician including the sensor data and the contact information for the owner of the HVAC system, so that the technician may service the HVAC system.

Abstract: A pressure-reducing regulator for CNG fuel includes a high pressure sensor that detects fuel pressure at an inlet, a filter element that filters fuel, an orifice that provides access to a pressure reduction chamber, and a movable pintle located within the orifice, such that a flow rate of fuel through the orifice varies according to a position of the pintle within the orifice. The pressure-reducing regulator further includes a motor that moves the pintle, a low pressure sensor that detects fuel pressure at an outlet and a control unit comprising a processor. The process is configured for reading data from the high pressure sensor, data from the low pressure sensor and vehicle data from an engine, calculating a desired position of the pintle based on the sensor data and the vehicle data, and transmitting a signal to the motor for moving the pintle to the desired position.