Vacuum pump for braking assistance system of electric vehicle, has cylindrical casing containing vane rotor rotating in chamber, where air from chamber is fed into sound-proof chamber that is in form of toric chamber arranged around casing

• Main Authors: FACCHIN SYLVAIN, GOUHIER NICOLAS
• Format: Patent
• Language: English; French
• Published: 11.05.2012
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BLASTING; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ENGINE PLANTS IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS; STEAM ENGINES; TRANSPORTING; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL; WEAPONS

The pump (1) has a cylindrical casing (2) containing a vane rotor rotating in a chamber, where air from the chamber escapes through an opening (5) and is fed into a sound-proof chamber (8) contiguous to the casing. The sound-proof chamber is in the form of a toric chamber arranged around the casing. A single hole (10) is formed on a front surface of the toric chamber for exhausting free air. The toric chamber is concentrically held on the casing by elastic spacers (9) that assure a space between the casing and the toric chamber. The toric chamber is made of molded plastic. Cette pompe à vide pour véhicule automobile comprend un carter cylindrique (2) renfermant un rotor à palettes tournant dans une chambre dont l'air s'échappe par un orifice (5) et est amené dans une chambre d'insonorisation (8) attenante au carter (2) ; la chambre d'insonorisation (8) est sous forme d'une chambre torique disposée autour du carter (2).