Patents Assigned to UD Trucks Corporation
  • Patent number: 9102992
    Abstract: The purpose of the present invention is to provide a method for improving fatigue strength that is capable of improving the fatigue strength of cast iron, specifically spherical graphite cast iron, to the same level as that of carbon steel subjected 10 carburizing and quenching. To this end, this method contains a step for performing first, second and third shot peenings using shot of a prescribed diameter for each on spherical graphite cast iron on which a tempering heat treatment has been performed at 150-300° C. and tensile strength made to be 800 MPa or more, the spherical graphite cast iron containing the following elements in the following mass percentages: C=2.0-4.0%, Si=1.5-4.5%, Mn=2.0% or less, P=0.08% or less, 8=0.03% or less, Mg=0.02-0.1%, and Cu=1.8-4.0%.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: August 11, 2015
    Assignee: UD Trucks Corporation
    Inventors: Yoshihiko Nozaki, Makoto Taguchi, Kazuhiro Hirakawa
  • Patent number: 9073463
    Abstract: A seat back movement prevention device of a belt-in seat enables a certain prevention of falling down of a seat back at a vehicle collision time of a vehicle mounting a 3-point belt-in seat, the seat back movement prevention device of a belt-in seat is made of one of a belt, a wire, and a chain of which one end side is attached to an upper part of a seat frame disposed in a seat back of a 3-point belt-in seat, and a pretensioner for a seat back being equipped at downward of the seat back, and rewinding one of the belt, the wire, and the chain at an activation time of a pretensioner for a seat belt.
    Type: Grant
    Filed: November 25, 2010
    Date of Patent: July 7, 2015
    Assignee: UD TRUCKS CORPORATION
    Inventor: Yoshitsugu Kuriyama
  • Patent number: 9053867
    Abstract: An energy storage cell includes an energy storage part for storing electric charges, a container for housing the energy storage part, and a pair of electrode terminals connected to the energy storage part and exposed to the outside of the container. The container is formed to have a thick polygonal outer shape and a groove part linearly extending in a direction perpendicular to a thickness direction is provided in each of a pair of mutually facing side surfaces of the polygonal shape. Each of the electrode terminals includes a base end part connected to a corresponding polarity of the energy storage part in the container and an exposed part exposed to the outside of the container, and the exposed part is formed along an inner side of the groove part.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: June 9, 2015
    Assignee: UD TRUCKS CORPORATION
    Inventor: Shigemi Kobayashi
  • Patent number: 8961351
    Abstract: A continuously variable transmission includes a first gear shift mechanism for changing continuously a speed ratio of drive power input from a prime mover, a second gear shift mechanism for changing continuously a speed ratio of drive power input from the prime mover, and a planetary gear mechanism to which drive power output from the first gear shift mechanism and that output from the second gear shift mechanism are input and from which combined drive power is output to an output shaft. The planetary gear mechanism includes a sun gear, a planetary carrier and a ring gear. An output from the first gear shift mechanism and that from the second gear shift mechanism are respectively input to any two of the sun gear, the planetary carrier and the ring gear and the remaining one is coupled to the output shaft.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: February 24, 2015
    Assignee: UD Trucks Corporation
    Inventor: Yoshiaki Yamada
  • Patent number: 8958199
    Abstract: A storage body comprises an electric energy storage unit and a case that houses the storage unit. The case comprises a frame-shaped outer shell body having two end surfaces that respectively include opening portions and a pair of laminate film pieces that are adhered to the respective end surfaces of the outer shell body so as to form a storage chamber inside the outer shell body. Each laminate film piece comprises an adhesion portion that is adhered to the outer shell body and a film portion that faces the storage chamber. The laminate film pieces, which are not formed by press-molding, are adhered to the outer shell body, and therefore structurally weak sites are not formed on the laminate film pieces.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: February 17, 2015
    Assignee: UD Trucks Corporation
    Inventors: Shigemi Kobayashi, Shuuichi Araki
  • Patent number: 8901049
    Abstract: The purpose of the present invention is to provide: a sliding member having a lubricating film formed on the sliding surface thereof, and capable of exhibiting friction-reducing performance; and a friction reduction method for the same. To that end, the present invention entails coating the sliding surface with a titanium nitride-based material (for example, titanium carbon nitride, titanium nitride, or titanium aluminum nitride), adding a molybdenum dithiocarbamate with molybdenum in the amount of 600-1000 ppm to diesel engine oil, setting the arithmetic mean roughness of the sliding member to 2-10 nm, and upon converting the Sommerfeld number viscosity to Pa·s, the speed to s?1, and the load to mean Hertzian stress (Pa), then the lubrication conditions for use are within the range of 2.12365×10?19 to 5.94509×10?19.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: December 2, 2014
    Assignees: UD Trucks Corporation, Adeka Corporation
    Inventors: Keisuke Yari, Sachiyo Ono, Masaru Iijima, Noriyoshi Tanaka, Kenji Yamamoto, Akihiro Kotaka
  • Patent number: 8899024
    Abstract: An engine exhaust purification device comprises: a selective reduction type NOx catalyst; an oxidation catalyst disposed on an upstream side of the NOx catalyst; a reducing agent adding device which adds an NOx reducing agent to an exhaust gas of an engine; a control device which controls the reducing agent adding device; and an NO2 ratio calculation device which estimates an NO2 ratio of the exhaust gas flowing into the NOx catalyst. The NO2 ratio of the exhaust gas flowing into the NOx catalyst is calculated by a catalytic reaction model where the oxidation reaction of NO in the oxidation catalyst is numerically formulated, and the NO2 ratio is reflected to calculate an amount of ammonia adsorbed on the NOx catalyst by a catalytic reaction model where a chemical reaction concerned with the reduction of NOx in the NOx catalyst is numerically formulated.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: December 2, 2014
    Assignees: UD Trucks Corporation, Waseda University
    Inventors: Nobuhiko Masaki, Kiminobu Hirata, Jin Kusaka, Hideaki Kato, Yasumasa Notake
  • Publication number: 20140333107
    Abstract: A seat cushion device capable of adjusting hardness of a seat cushion including a seating surface, on which a user is seated, includes a recessed part that is formed in a back surface of the seating surface in the seat cushion, a left plate that faces a back surface of a left thigh holding part of the seating surface, on which a left leg thigh of the user is located, and that is movable inside the recessed part vertically, a right plate that faces a back surface of a right thigh holding part of the seating surface, on which a right leg thigh of the user is located, and that is movable inside the recessed part vertically, and a gap adjustment mechanism that moves the left plate and the right plate vertically in an independent manner, and that can adjust a clearance from the back surface of the seating surface.
    Type: Application
    Filed: October 10, 2012
    Publication date: November 13, 2014
    Applicants: UD TRUCKS CORPORATION, UD TRUCKS CORPORATION
    Inventors: Kunio Seki, Tsubasa Yahagi
  • Patent number: 8883696
    Abstract: The purpose of the present invention is to provide: a sliding mechanism having a lubricating film formed on the sliding surface thereof, and capable of exhibiting friction-reducing performance; and a friction reduction method for the same. To that end, the present invention entails coating the sliding surface with chromium nitride, adding a molybdenum dithiocarbamate with molybdenum in the amount of 600-1000 ppm to diesel engine oil, setting the arithmetic mean roughness of the sliding member to 2-60 nm, and upon converting the Sommerfeld number viscosity to Pa·s, the speed to s?1, and the load to mean Hertzian stress (Pa), then the lubrication conditions for use are within the range of 2.12365×10?20 to 5.94509×10?19.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: November 11, 2014
    Assignees: UD Trucks Corporation, Adeka Corporation
    Inventors: Keisuke Yari, Sachiyo Ono, Masaru Iijima, Noriyoshi Tanaka, Kenji Yamamoto, Akihiro Kotaka
  • Patent number: 8874303
    Abstract: Disclosed is a fuel-saving driving evaluation system which provides a driver with advice suitable for the driver based on fuel-saving driving evaluation standards which correspond to the fuel-saving driving proficiency level of the driver, so that the driver is relaxed and the fuel-saving driving skill of the driver is gradually improved. The fuel-saving driving evaluation system is comprised of an engine speed measuring device, a vehicle speed measuring device, a fuel flow measuring device, and a control device. The control device has a function to store several kinds of standard values and target values of parameters (driving operation parameters) for evaluating the fuel-saving driving level in the vehicle to be evaluated, and a function to determine the standard values and the target values of the parameters based on control signals sent from outside of the control device.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: October 28, 2014
    Assignee: UD Trucks Corporation
    Inventors: Takahiro Ishida, Yoshitaka Nishiyama
  • Patent number: 8850799
    Abstract: Based on a fuel supplying amount in accordance with an engine operating condition, a discharge amount of a predetermined fuel component contained in exhaust gas to be discharge per unit time is estimated, and integrated by an accumulation amount of the fuel component accumulated in an exhaust purification element. Furthermore, according to an exhaust gas temperature that flows into the element, an amount of the fuel component to be removed from the element per unit time is estimated, and the amount is subtracted from the accumulation amount. When the accumulation amount is equal to or greater than a predetermined value, a determination is made that a timing to forcefully remove the fuel component accumulated in the element has arrived. Then, an alarming lamp is lightened, and a forceful removing processing is performed by raising a temperature of the exhaust gas above a temperature at which the fuel component is removed.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: October 7, 2014
    Assignee: UD Trucks Corporation
    Inventors: Masakazu Yano, Tomofumi Nakashima, Tomoyuki Takeda, Takafumi Amano
  • Patent number: 8839666
    Abstract: A vehicle speed signal falsification detection apparatus has a control unit incorporating a computer. The control unit calculates a vehicle speed according to a pulse signal proportional to the rotational speed of a drive wheel and also calculates a simulated vehicle speed according to a pulse signal proportional to the rotational speed of a driven wheel. Then, the control unit determines, on the basis of the comparison between the vehicle speed and the simulated vehicle speed, whether a vehicle speed signal has been falsified. When the control unit determines that the vehicle speed signal has been falsified, then the control unit outputs a falsification detection signal to another control unit so as to suppress the output of an engine.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: September 23, 2014
    Assignee: UD Trucks Corporation
    Inventors: Satoshi Fujii, Chikara Arai
  • Publication number: 20140260204
    Abstract: An exhaust gas purification apparatus includes a SCR converter selectively reducing and purifying NOx in exhaust gas upon being supplied with ammonia generated from urea aqueous solution and an injection nozzle injection-supplying the urea aqueous solution on exhaust gas upstream side of the SCR converter. At least a part of an exhaust pipe located between the injection nozzle and the SCR converter has a double-pipe structure including inner and outer pipes, each having a welded portion, and the welded portion of the outer pipe was welded from an inside of the outer pipe. Thus, the outer pipe has fine welded portion on an inner peripheral surface where a welding temperature is high and the coarse welded portion on an outer peripheral surface where the welding temperature is low, resulting in an ordered atomic arrangement and thus improved corrosion resistance of the inner peripheral surface, which may be exposed to ammonia.
    Type: Application
    Filed: May 30, 2014
    Publication date: September 18, 2014
    Applicant: UD TRUCKS CORPORATION
    Inventor: Satoshi SUGIYAMA
  • Publication number: 20140249726
    Abstract: An object is to provide a vehicle start-up control, mechanism capable of preventing the occurrence of clutch judder with no need of paying excessive attention thereto for a driver. For this purpose, the present invention is provided with a clutch judder detection device (1) for. detecting the occurrence of clutch judder, a clutch state detection, device (3) for detecting a partially engaged clutch state, and a control unit, (10), wherein the control unit (10) has a function, for storing an accelerator opening (position) in the partially engaged clutch state in a case where the clutch judder has occurred during start-up and a function, for comparing an accelerator opening during next start-up with an accelerator opening in case where the clutch judder has occurred during previous start-up.
    Type: Application
    Filed: August 23, 2012
    Publication date: September 4, 2014
    Applicant: UD TRUCKS CORPORATION
    Inventor: Kunihiro Kaneko
  • Publication number: 20140228171
    Abstract: The present invention has an object to provide a vehicle control device which does not require a complicated operation to start an engine even if an idle-stop function has been executed. Thus, the present invention includes a mechanical automatic transmission, an idle-stop device (1) for stopping the engine when the vehicle is stopped, a slope detection device (2) for detecting a slope of a road, and a control unit (10), and is characterized in that the control unit (10) has a function for disengaging a clutch and selecting a gear appropriate for the detected slope, when the slope detected by the slope detection device (2) is at or above a threshold value and an operation of the idle-stop device (1) has been requested.
    Type: Application
    Filed: August 13, 2012
    Publication date: August 14, 2014
    Applicant: UD TRUCKS CORPORATION
    Inventor: Kunihiro Kaneko
  • Publication number: 20140223889
    Abstract: The purpose of the present invention is to provide a DPF travel-time regeneration control system of stably raising the temperature even during travel and capable of decreasing the frequency of DPF regeneration when the vehicle is stopped. In this control system, if the DPF (5) needs to be regenerated, the vehicle is traveling on cruise control, and the exhaust temperature detected by an exhaust temperature sensor (11) is higher than a threshold value, then fuel is injected into the exhaust pipe by a fuel injection means (7), and if the exhaust temperature is lower than the threshold value, the exhaust temperature is raised by operating the exhaust brake without injecting fuel into the exhaust pipe.
    Type: Application
    Filed: July 30, 2012
    Publication date: August 14, 2014
    Applicant: UD TRUCKS CORPORATION
    Inventor: Takafumi Amano
  • Patent number: 8790219
    Abstract: In order to maintain a high NOx purification rate of a NOx reduction catalytic converter even in the case in which an NOx emission amount from an engine changes suddenly, in an exhaust emission purifying apparatus for an engine that reduces and purifies NOx in exhaust gas using ammonia generated from an injection-supplied urea aqueous solution, after engine starting, when an exhaust temperature exceeds a predetermined temperature T (step S1), an amount of urea aqueous solution corresponding to an actual engine operating state is injection-supplied (steps S3 to S5). On the other hand, at a change of the transmission speed ratio based on a driver's shift operation, an engine operating state after the change of the transmission speed ratio is predicted (steps S2, S6), and an amount of urea aqueous solution corresponding to the predicted engine operating state is injection-supplied before the change of the transmission speed ratio is completed (steps S7, S8).
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: July 29, 2014
    Assignee: UD Trucks Corporation
    Inventors: Masakazu Yano, Kiminobu Hirata, Nobuhiko Masaki
  • Patent number: 8770327
    Abstract: An accessory drive mechanism for a hybrid vehicle, capable of operating accessories irrespective of the travel state of the vehicle, and also capable of smoothly switching between the power which is transmitted from the traveling motor side and the power which is transmitted from the accessory drive motor side. The accessory drive mechanism is provided with a drive power take-off mechanism (20) for taking out the power from a travel drive system (D). An accessory (11) is connected to the drive power take-off mechanism (20). A first one-way clutch (C1) which can transmit the power only to the accessory (11) side is disposed between the drive power take-off mechanism (20) and the accessory (11). An accessory driving motor (an auxiliary motor (12e)) is connected to the side of the accessory (11) which is on the opposite side from the drive power take-off mechanism (20).
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: July 8, 2014
    Assignee: UD Trucks Corporation
    Inventors: Yoshiaki Yamada, Takayuki Tsuchiya, Kunihiko Hikiri
  • Patent number: 8715578
    Abstract: An exhaust gas purifying apparatus has a first housing including a DOC converter and DPF, and a second housing including an SCR converter, the housings disposed in parallel on the outer side of a frame such that the exhaust upstream ends thereof are positioned on the outer side in the vehicle width direction. An outlet port of the first housing and an inlet port of the second housing are communicatively connected through a communication pipe. The first housing is dividable into a first casing accommodating the DOC converter and a second casing accommodating the DPF, the two casings separably fastened by bolts. The inlet port of the first casing housing is bent inwardly in the width direction and detachably fastened to an exhaust pipe, the distal end of which opens outwardly in the width direction, through bolts. The second casing and housing are fixed to the frame through two brackets.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: May 6, 2014
    Assignee: UD Trucks Corporation
    Inventor: Takashi Fukuda
  • Patent number: 8713922
    Abstract: In an exhaust filter, a urea hydrolysis catalyst is supported on a first portion of an inner wall of a cell passage on the inlet side, and a first NOx reducing catalyst is supported on a second portion of the inner wall of the inlet-side passage downstream of the first portion. A second NOx reducing catalyst is supported on a third portion of an inner wall of a cell passage on the outlet side where the third portion overlaps with the first portion in a direction of intersection with the exhaust flow into the exhaust filter or is downstream of the first portion. An oxidation catalyst is supported on a fourth portion of the inner wall of the outlet-side passage downstream of the third portion where the fourth portion overlaps with the second portion in the direction of intersection or is downstream of the second portion.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: May 6, 2014
    Assignee: UD Trucks Corporation
    Inventors: Masakazu Yano, Nobuhiko Masaki, Kiminobu Hirata