Abstract: Connection device (10) for connecting a rim (20) to a wheel hub (30) presenting a peripheral connecting outline (11), which is integral with a support body (31) of the wheel hub (30), and a complementary connecting outline (12), which is obtained circumferentially along a mounting border (25) of the rim (20), and which presents a shape which is complementary to the peripheral connecting outline (11) in order to render angularly integral in relation to each other the rim (20) of the wheel hub (30); the peripheral connecting outline (11) and the complementary connecting outline (12) both presenting a radius (R) of angularly variable dimensions with continuity on a plane with is transverse to the rotation axis (A), and are both provided with at least one respective convex portion (13) (14) in relation to the rotation axis (A).

Abstract: A heat pump air conditioning system having an outside heat exchanger which is disposed in an engine compartment of a vehicle is provided. The outside heat exchanger consists of a first outside heat exchanger disposed forward of an engine and a second outside heat exchanger disposed near the engine except the front, especially rearward of the engine. When heating the passenger compartment, the second outside heat exchanger acts as a heat absorber, utilizing the heat of the engine, and effectively heating the interior.