Abstract: This rotating joint (7) has an axis (Y--Y) parallel to the axis of the pivotable mounting of the engine. The joint comprises two annular planar surfaces (18, 19) having the same axis (Y--Y) and respectively rigid with the two elements of the exhaust pipe (6, 9) to be interconnected. These surfaces are separated by a heat-resistant anti-friction ring (20) and are biased toward each other by a pivotal U-shaped element (21). Application in vehicles having a transverse front engine.

Abstract: The device regulates the flow of exhaust gas reintroduced in the induction pipe in accordance with the conditions of utilization of the engine. It consists mainly in modifying a depression case the movable wall of which is connected by a cable to the closure member regulating the amount of gas re-cycled. This wall has an opening with which cooperates a valve subjected to the opposed actions of a spring which tends to apply it against its seat and a rod actuated by the butterfly valve member placed in the induction pipe. In this way there is provided a control which is independent of the characteristics of the various springs and is therefore more precise.

Abstract: The device comprises an auxiliary heating liquid circuit connected to the main cooling liquid cricuit of the engine on the suction side of the cooling circuit pump. The cooling circuit has an expansion chamber containing a gaseous phase. The heating circuit has a loop portion constituting a siphon whose upper point is located at a level above the level of the liquid in the expansion chamber. A pipe connects the loop portion to the upper part of the expansion chamber and is located throughout its path above the level of the liquid in the expansion chamber.