Metering module featuring air gap insulation

An apparatus for cooling a metering module (10), the apparatus comprising a metering valve (30), wherein the metering module (10) is assigned a cooling device which comprises a heat sink (17, 20, 24, 28, 29) through which a cooling fluid flows, wherein the heat sink (17, 20, 24, 28, 29) forms a housing (12) of the metering valve (30), wherein a first group of parts (17, 20, 28) of the housing forms an air gap insulation (38;

• 54, 56, 58) at least partially surrounding an electric contact (16, 56) and a second group of parts (28, 29, 40, 64) of the housing defines a cavity (44), the cavity (44) having the cooling fluid flowing therethrough, wherein the cavity (44) at least partially surrounds the air gap insulation (38;
• 54, 56, 58), wherein the cavity (44) and the air gap insulation (38;
• 54, 56, 58) share a common wall (64), wherein the air gap insulation (38;
• 54, 56, 58) is arranged on an interior of the common wall (64), wherein the cavity (44) is arranged on an exterior of the common wall (64), and wherein the heat sink comprises an upper shell (20), a latchable plug-in contact cover (17), a central shell (28), a lower shell (29), and a cup-shaped insert (24) embedded in the lower shell (29).