A fuel connection unit (10) for a fuel-operated vehicle heater (18) includes a connection unit body (12), which can be arranged at a heater housing (16). A fuel release line connection area (32) connects a fuel release line leading to a combustion chamber. A fuel feed line connection area (46) projects from the connection unit body (12) for connecting a fuel feed line. At least one functional unit (50), for influencing the flow of fuel in a fuel flow volume (36) formed in the connection unit body (12), is provided in the connection unit body (12).

A fuel connection unit (10) for a fuel-operated vehicle heater (18) includes a connection unit body (12), which can be arranged at a heater housing (16). A fuel release line connection area (32) connects a fuel release line leading to a combustion chamber. A fuel feed line connection area (46) projects from the connection unit body (12) for connecting a fuel feed line. At least one functional unit (50), for influencing the flow of fuel in a fuel flow volume (36) formed in the connection unit body (12), is provided in the connection unit body (12).

A system includes an injector having a scheduling valve assembly and a nozzle in fluid communication with the valve assembly. The scheduling valve assembly is configured for regulation of flow from an inlet of the injector to the nozzle. The injector includes two fluid circuits between the inlet of the injector and two respective outlets of the nozzle for staged flow output from the nozzle. A first one of the two fluid circuits is a primary circuit, and a second one of the two fluid circuits is a secondary circuit. A solenoid valve is connected in fluid communication with the scheduling valve assembly, wherein the solenoid valve is configured to adjust position of a hydromechanical valve spool of the valve assembly.

A fuel connection unit for a fuel-operated vehicle heater includes a connection unit body (12) to be mounted on a heater body (78). A fuel release line connection area (16) is positioned such that it meshes with or faces an interior (80) of the heater body (78). The fuel release line connection area (16) connects a fuel release line (104), extending in the interior (80), with a fuel feed line connection area (20) to be positioned exposed on an outer side of the heater body (78), for connecting a fuel feed line.

For a temperature control unit for gaseous or liquid medium with a highly dynamic temperature regulation of the medium, the temperature control unit is designed with a base body and a cooling body between which are arranged multiple thermoelectric modules, and with a media line in the base body, wherein the media line is arranged in the base body in the form of a single-start spiral from the outside to the inside, and it is provided that the multiple thermoelectric modules are arranged in a plurality of rows on the base body, wherein the module heating power of a thermoelectric module situated further toward the outside radially is greater than the module heating power of a thermoelectric module situated further toward the inside radially.

For a temperature control unit for gaseous or liquid medium with a highly dynamic temperature regulation of the medium, the temperature control unit is designed with a base body and a cooling body between which are arranged multiple thermoelectric modules, and with a media line in the base body, wherein the media line is arranged in the base body in the form of a single-start spiral from the outside to the inside, and it is provided that the multiple thermoelectric modules are arranged in a plurality of rows on the base body, wherein the module heating power of a thermoelectric module situated further toward the outside radially is greater than the module heating power of a thermoelectric module situated further toward the inside radially.

The present invention consists of a saving gas device which, being placed downstream of the pressure regulator and upstream of the consuming devices, in a natural gas or liquefied petroleum gases supply facility, improves the gas consumption efficiency by means of a recirculation, filtering and centrifugation process. The action exerted on the steam trap of the device, retains the impurities the gas contains, thus improving retention of particles and achieving the gas to come out substantially pure, as well as achieving gas molecules rearrangement by means of a centrifugation coil, obtaining flow stabilization and improving the circulation thereof.

A fuel valve includes a cylindrical flow adjusting member having a cylindrical surface formed with two circumferentially extending V-shaped grooves for liquid fuel and air, respectively. The fuel valve further includes liquid fuel and air supply pipes having O-rings at their respective discharge ports which are kept in abutment with the cylindrical surface such that when the flow rate adjusting member is rotated to a position where the V-shaped grooves extend across and protrude from the respective O-rings, the discharge ports of the supply pipes communicate with the respective V-shaped grooves, so that liquid fuel and air flow. The depths, widths and positions of the respective V-shaped grooves are determined corresponding to an igniting position (preheating step), normal burning positions (high heat to low heat), and a discharge position such that the flow rates of liquid fuel and air can be adjusted in synchronization with each other.

A fuel valve includes a cylindrical flow adjusting member having a cylindrical surface formed with two circumferentially extending V-shaped grooves for liquid fuel and air, respectively. The fuel valve further includes liquid fuel and air supply pipes having O-rings at their respective discharge ports which are kept in abutment with the cylindrical surface such that when the flow rate adjusting member is rotated to a position where the V-shaped grooves extend across and protrude from the respective O-rings, the discharge ports of the supply pipes communicate with the respective V-shaped grooves, so that liquid fuel and air flow. The depths, widths and positions of the respective V-shaped grooves are determined corresponding to an igniting position (preheating step), normal burning positions (high heat to low heat), and a discharge position such that the flow rates of liquid fuel and air can be adjusted in synchronization with each other.