Patents Assigned to Volvo Trucks AB
  • Patent number: 9162571
    Abstract: A dual drive arrangement has three way power split device such as an epicyclic gearing system converting input rotation from a gearbox or from an electric motor into an output rotation driving a hydraulic pump.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: October 20, 2015
    Assignee: Volvo Trucks AB
    Inventor: Jean-Marc Blond
  • Patent number: 9163534
    Abstract: A valve actuation mechanism for an internal combustion engine includes rockers moved by a camshaft, each rocker being adapted to exert a valve opening force on at least a portion of a valve opening actuator of each cylinder, via an activation piston, housed in a bore of the rocker and movable with respect to the rocker under action of a fluid pressure raise in a chamber fluidly connected to the bore, from a first position to a second position with respect to the rocker, in which a cam follower of the rocker is adapted to read at least one auxiliary valve lift sector of a cam of the camshaft so as to perform an engine operating function. Each rocker includes a check valve adapted to control the fluid pressure raise in the chamber.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: October 20, 2015
    Assignee: Volvo Trucks AB
    Inventors: Benjamin Girard, Romain Le Forestier
  • Patent number: 9163566
    Abstract: A valve actuation mechanism includes rockers moved by a camshaft, each rocker being adapted to exert a valve opening force on at least a portion of a valve opening actuator of each cylinder, via an activation piston, housed in a bore of the rocker and movable with respect to the rocker under action of a fluid pressure raise in a chamber fluidly linked to the bore, from a first position to a second position, in which a cam follower of the rocker reads at least one auxiliary cam sector of a cam of the camshaft so as to perform an engine operating function. Each rocker includes a reset valve adapted to reduce fluid pressure in the chamber. The valve actuation mechanism includes, for each rocker, a reset cam profile adapted to open the reset valve when the activation piston has to be moved from its second position to its first position, and each reset valve includes a cam follower adapted to drive the reset valve as a function of the movement of the reset profile.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: October 20, 2015
    Assignee: Volvo Trucks AB
    Inventors: Romain Le Forestier, Romain Riviere
  • Patent number: 9114681
    Abstract: A suspension assembly for an automotive vehicle includes a fixed bracket, a suspension arm mounted between two mounting flanges of the bracket, a spacer mounted in a bore of a flange of the bracket, and an articulation shaft mounted through the flanges, the suspension arm and the spacer. The spacer includes an inner ring in which the articulation shaft is mounted An end face of the inner ring is adapted to be pressed, along a longitudinal axis of the shaft, against a lateral face of the suspension arm. The spacer includes, between its inner ring and the bore in which the spacer is mounted, a deformable sleeve, deformable along die longitudinal axis under a shear effort and adapted to slide with respect to the inner ring or to the bracket, along the longitudinal axis.
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: August 25, 2015
    Assignee: Volvo Trucks AB
    Inventors: Stephane Brun, Julien Guerra
  • Patent number: 9097159
    Abstract: A method is provided for detecting urea deposits in an exhaust line of an automotive vehicle and includes determination if an exhaust gas's temperature is reached, if the result of determination is positive, stoppage of urea injection, and determination of the quantity of NOx in the exhaust gases on the outlet of the selective catalytic reduction system. A comparison is performed between the quantity of NOx determined on the outlet of the selective catalytic reduction system and a theoretical quantity or a measured quantity of NOx produced by the internal combustion engine. If the comparison shows that the quantities are different, it is considered that urea deposits are present in the exhaust line. A vehicle is also disclosed.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: August 4, 2015
    Assignee: Volvo Trucks AB
    Inventors: Patrice Keghelian, Damien Brunel
  • Patent number: 9097161
    Abstract: In an exhaust gas pipe, a first fluid flows in a flow direction in the pipe, and a second fluid is injected inside the pipe by a nozzle, from an injection inlet arranged in the pipe wall, according to an injection direction. A mixing device fastened inside the pipe upstream from the injection inlet creates turbulence that helps the mixing of the fluids. The mixing device has a first portion located on the injection inlet side of the pipe and a second portion located opposite the injection inlet side of the pipe, the portions being designed so that the fluid velocity is higher downstream from the mixing device second portion than downstream from the mixing device first portion. An aqueous solution of urea can be injected inside an exhaust pipe of a diesel engine.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: August 4, 2015
    Assignee: Volvo Trucks AB
    Inventors: Michel Vanvolsem, Julien Ampere