Integrated inlet manifold/throttle valve chamber unit

An integrated inlet manifold/throttle valve chamber unit for a vehicle with a heat engine, the unit comprising:

• an inlet manifold having a fresh air feed orifice;
• an adjustment module attached to the inlet manifold for adjusting the passage cross section in the region of the fresh air feed orifice;
• said adjustment module comprising an annular body receiving a throttle valve mounted on a pivot shaft connected to means for controlling and checking the rotational position of said pivot shaft;
• said means being external to said annular body;
• said annular body nesting at least partially in a nozzle-shaped extension of the intake manifold in the region of the fresh air feed orifice;
• said adjustment module being rotationally locked relative to the inlet manifold by receiving at least one of external portions of the pivot shaft and guide bearings of said pivot shaft in opposing cutouts made in the feed nozzle extending from the feed orifice;
• and
• the nesting of the annular body in said feed nozzle being locked and barred by a locking ring connected to at least one of the body of the inlet manifold and the feed nozzle.