Patents Assigned to Bosch Corporation
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Publication number: 20140138373Abstract: A ceramic heater-type glow plug is provided that is configured so that, even when a deformation occurs in a metal outer cylinder, stress propagating to the connection between one electrode of a ceramic heater and an electrode lead-out member can be reduced to prevent the ceramic heater and the electrode lead-out member from being damaged. In the ceramic heater-type glow plug in which heat-resistant insulating particles are sealed into the metal outer cylinder as a sealing material, at least an area around the connection between the one electrode and the electrode lead-out member is filled with a mixed insulating powder mixed with a lubricity enhancing material for improving lubricity among the heat-resistant insulating particles.Type: ApplicationFiled: April 4, 2012Publication date: May 22, 2014Applicant: BOSCH CORPORATIONInventor: Katsumi Takatsu
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Publication number: 20140130772Abstract: It is an object of the present invention to reduce the penetration of a fuel spray directed toward a certain area in a cylinder, thereby reducing oil dilution that increases sliding resistance in the engine, reducing fuel adhesion or the like onto the cylinder liner, and also reducing the adverse effect of a fuel spray having an increased penetration. A fuel injection valve that has a plurality of injection holes and injects fuel into a cylinder 3 of an internal combustion engine includes: injection holes a2 and a6 having a larger diameter for injecting fuel toward a ring-shaped space T1 including areas A2 and A6 of strong tumble flow T formed in the cylinder; and injection holes al, a4, a3 and a5 having a smaller diameter for injecting fuel toward a space including areas A1, A4, A3 and A5 of weak tumble flow formed in the cylinder 3.Type: ApplicationFiled: July 4, 2012Publication date: May 15, 2014Applicant: BOSCH CORPORATIONInventors: Kaoru Maeda, Yuichiro Goto, Wolfram Wiese, Daniel Scherrer
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Patent number: 8706376Abstract: To provide an ABS control system and software with an automatic parameter calibration function. An ABS control system according to the present invention includes an electronic control unit (ECU), a wheel speed sensor, and a brake pressure sensor. The wheel speed sensor and the brake pressure sensor measure wheel speed and brake pressure during ABS braking, and the ABS control system automatically calibrates an internal parameter used in ABS control in response to the wheel speed and brake pressure measurement results.Type: GrantFiled: August 22, 2008Date of Patent: April 22, 2014Assignee: Bosch CorporationInventors: Shunsaku Ono, Shuichi Miyagawa
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Publication number: 20140102396Abstract: The accuracy in controlling the heating temperature of a glow plug and the reliability of the control operation are improved. An electronic control unit 101 is configured such that a standard applied voltage for glow plugs 50-1 to 50-n is set according to the engine speed and the load conditions of the engine. In addition, a correction coefficient set in advance according to the temperature classification of the mounted glow plugs 50-1 to 50-n is readably stored in the electronic control unit 101 as a correction coefficient map. By multiplying the standard applied voltage by a correction coefficient K read from the correction coefficient map and applying a voltage of the multiplication result to the glow plugs 50-1 to 50-n as a driving voltage through the power circuit 102 to perform driving control, stable and reliable heating temperature control can be realized regardless of variations in the heating temperature characteristics.Type: ApplicationFiled: May 14, 2012Publication date: April 17, 2014Applicant: BOSCH CORPORATIONInventors: Tomohiro Nakamura, Yutaka Tanaka, Yoshihito Fujishiro
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Publication number: 20140096733Abstract: There is provided a new glow plug that can be easily determined as to whether or not it is a new article. An additional circuit 12 formed by connecting a diode 13, a fuse 14, and an adjusting resistor 15 in series in this order is connected in parallel to a heating element 11 of a glow plug 1. The diode 13 is provided so as to have an anode located on the positive electrode side of the heating element 11 and a cathode located on the fuse 14 side. In the case of a unit inspection, by applying a positive voltage for test to a heating element negative electrode connecting portion 3a, it is possible to determine whether or not the glow plug 1 is normal without blowing the fuse 14 before the glow plug 1 is used in a vehicle.Type: ApplicationFiled: May 14, 2012Publication date: April 10, 2014Applicant: Bosch CorporationInventors: Tomohiro Nakamura, Yutaka Tanaka, Yoshihito Fujishiro, Yasuo Toyoshima
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Publication number: 20140090363Abstract: A heater control device of an oxygen concentration sensor is provided in which even in a case where an internal combustion engine is automatically stopped by idle stop control after cold start-up, it is possible to start energization of a heater at an appropriate time.Type: ApplicationFiled: March 29, 2012Publication date: April 3, 2014Applicant: BOSCH CORPORATIONInventors: Keiichi Takeda, Ken Noguchi
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Patent number: 8649924Abstract: To enable a smooth transition from motor travel to hybrid travel despite the situation-of-charge of a battery and reduce shock at the time of engagement of a clutch element. A hybrid system uses a state map 70 for deciding target torques of an engine and a motor on the basis of an accelerator stroke position, a vehicle velocity and a battery state-of-charge SOC. In the map 70, there are defined a motor maximum torque line that demarcates a motor upper limit torque that changes depending on the SOC and a motor margin torque line that is a predetermined margin lower than the motor maximum torque line.Type: GrantFiled: November 26, 2008Date of Patent: February 11, 2014Assignee: Bosch CorporationInventor: Takashi Imaseki
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Patent number: 8633611Abstract: A motorcycle comprises an electricity accumulator configured to supply electric power to driving devices required for driving of the motorcycle and to non-driving devices; a voltage detector configured to detect a voltage of the electricity accumulator; and a power supply controller configured to control supply of the electric power; the non-driving devices including electric motor devices in an electric motor braking system configured to be electrically driven to assist braking and non-driving electric motor devices other than the electric motor devices in the electric motor braking system; and the power supply controller being configured to inhibit the electric power from being supplied to at least one specified non-driving electric motor device of the non-driving electric motor devices, when the voltage of the electricity accumulator which is detected by the voltage detector is not more than a first predetermined voltage.Type: GrantFiled: September 29, 2010Date of Patent: January 21, 2014Assignees: Kawasaki Jukogyo Kabushiki Kaisha, Bosch CorporationInventors: Kazuma Waida, Kenichi Jino, Manabu Kokawa, Shunsaku Ono, Junya Iwatsuki
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Patent number: 8620548Abstract: Secure failure diagnosis of a brake switch is enabled with a simple configuration. Inconsistency detection is performed for output signals from two brake switches 6a and 6b provided such that an operation condition of a brake pedal 1 may be detected (S102), and when inconsistency is detected, after a certain time has passed from the relevant detection point, inconsistency detection is newly performed for output signals from the two brake switches 6a and 6b (S108), and when inconsistency is detected again, a determination counter performs count of a predetermined incremental value, those operation being periodically repeated (S110), and when a count value reaches a predetermined value ? after the determination counter performs the count, the two brake switches 6a and 6b are determined to be failed (S114 and S118).Type: GrantFiled: November 29, 2007Date of Patent: December 31, 2013Assignee: Bosch CorporationInventors: Masaki Shibasaki, Tetsuya Shinguchi, Takayuki Wakai, Masaaki Maeno
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Patent number: 8607563Abstract: Hydraulic fluid is supplied from a hydraulic fluid supply opening to a hydraulic fluid supply portion. The hydraulic fluid in the hydraulic fluid supply portion is supplied to a primary hydraulic fluid storage chamber and to a secondary hydraulic fluid storage chamber via a hydraulic fluid supply passage. An oblong cylinder-shaped portion that has a chamber is formed between the hydraulic fluid supply opening and the hydraulic fluid supply portion. Further, a volume-augmented chamber forming portion that has a volume-augmented chamber that is communicated with the chamber is disposed in this oblong cylinder-shaped portion. In that case, at least part of the volume-augmented chamber is positioned above a MAX line of the hydraulic fluid.Type: GrantFiled: March 11, 2010Date of Patent: December 17, 2013Assignee: Bosch CorporationInventor: Toshiyuki Takahashi
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Patent number: 8590291Abstract: A control device for a reducing agent supply apparatus for controlling the reducing agent supply apparatus having reducing agent collecting means for collecting a reducing agent inside reducing agent supply paths in an exhaust gas purification apparatus that adds the reducing agent to an exhaust gas upstream side of a reducing catalyst disposed inside an exhaust gas passageway of an internal combustion engine, and reduces and purifies nitrogen oxides contained in exhaust gas using the reducing catalyst, includes: a stop detection portion that detects when the internal combustion engine stops; a reducing agent collecting means control portion that starts collection of the reducing agent inside the reducing agent supply paths when the internal combustion engine stops; and an injection valve control portion that keeps a reducing agent injection valve closed when the reducing agent collecting means starts operating and opens the reducing agent injection valve after a predetermined time period elapses.Type: GrantFiled: October 14, 2008Date of Patent: November 26, 2013Assignee: Bosch CorporationInventor: Hiroyuki Kasahara
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Patent number: 8578710Abstract: A cup seal (21) of the invention includes an intermediate lip portion (21d), positioned between an inner lip portion (21b) and an outer lip portion (21c), provided in a base portion (21a). The intermediate lip portion (21d) is configured in such a way that first intermediate lip portions (21d1), communication passages (21d3), second intermediate lip portions (21d2), whose axial direction length is less than that of the first intermediate lip portions (21d1), and the communication passages (21d3), which have no lip portion, are cyclically disposed, in this order, in the peripheral direction. An easy elastic deformation portion of the base portion (21a) which elastically deforms easily is formed by the second intermediate lip portions (21d2) and communication passages (21d3) and, by the easy elastic deformation portion elastically deforming easily when supplying liquid, a flow passage with a larger passage area is formed.Type: GrantFiled: January 17, 2008Date of Patent: November 12, 2013Assignee: Bosch CorporationInventors: Tomohiro Aoki, Masaki Shiwa
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Patent number: 8577581Abstract: To reliably prevent a drop in the function of injectors resulting from a rise in the temperature of excess fuel in the injectors without having to add a new part.Type: GrantFiled: April 23, 2008Date of Patent: November 5, 2013Assignee: Bosch CorporationInventors: Shinichi Hirota, Tomonori Watanabe
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Publication number: 20130283771Abstract: [Problem] To provide a reducing agent supply apparatus abnormality diagnosis unit that can reduce the limitation on when to perform abnormality diagnosis and on the applicability of abnormality diagnosis to facilitate the implementation of abnormality diagnosis of a reducing agent supply apparatus and to provide the reducing agent supply apparatus.Type: ApplicationFiled: September 7, 2011Publication date: October 31, 2013Applicant: Bosch CorporationInventor: Masayasu Nagata
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Publication number: 20130283769Abstract: [Problem] To provide an exhaust gas purification system capable of preventing clogging of a reducing agent injection valve due to solidified urea aqueous solution to prevent decrease in the exhaust gas purification efficiency of an internal-combustion engine. [Means for Resolution] An exhaust gas purification system including a DPF, a reducing agent injection valve and an SCR catalyst in this order from the exhaust upstream side includes: a condition satisfaction determination section for determining whether or not urea aqueous solution is likely to be solidified when detecting that an ignition switch is turned off; and an internal-combustion engine stop prevention section for preventing the internal-combustion engine from being stopped, based on a determination by the condition satisfaction determination section.Type: ApplicationFiled: December 21, 2011Publication date: October 31, 2013Applicant: BOSCH CORPORATIONInventors: Masanori Watanabe, Takeshi Miyamoto, Fumiyasu Kurogi
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Publication number: 20130282253Abstract: It is an object of the present invention to control unstable behavior of a vehicle body that arises when braking during turning.Type: ApplicationFiled: October 5, 2011Publication date: October 24, 2013Applicant: BOSCH CORPORATIONInventors: Shunsaku Ono, Junya Iwatsuki, Takahiro Ogawa, Saiji Suzuta, Mitsuhiro Saito
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Publication number: 20130269321Abstract: Provided is an exhaust purification system capable of clearing a blockage of a reducing agent injection valve caused by solidification of an aqueous urea solution soon after starting an engine and preventing degradation in exhaust purification efficiency when starting an internal combustion engine.Type: ApplicationFiled: December 21, 2011Publication date: October 17, 2013Applicant: BOSCH CORPORATIONInventors: Masanori Watanabe, Takeshi Miyamoto, Fumiyasu Kurogi
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Publication number: 20130255615Abstract: To suppress current fluctuations upon commencement of driving and prolong lifespan by reducing electric stress caused by current fluctuations. A glow plug 1, a glow switch 2, and a stabilizing coil 3 are series-connected, and upon commencement of the driving of the glow plug 1, a repetition frequency of PWM signals that control the opening and closing of the glow switch 2 is made into a higher frequency than a repetition frequency in a normal drive state and the opening and closing of the glow switch 2 is controlled (S104), and when a predetermined drive shift condition has been met (S106), the repetition frequency of the PWM signals is returned to the frequency during normal driving and the opening and closing of the glow switch 2 is controlled (S108), whereby the current upon commencement of driving is smoothed and the occurrence of an instantaneous large current is suppressed.Type: ApplicationFiled: December 6, 2011Publication date: October 3, 2013Applicant: BOSCH CORPORATIONInventors: Yoshito Hujishiro, Yutaka Tanaka, Tomohiro Nakamura
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Patent number: 8539934Abstract: To reliably detect, without adding new parts, injection abnormality not only when fuel injection is not performed but also including fuel injection in a state where the injection quantity has fallen abnormally low. In a state where a flow rate control valve is controlled in a closed loop, a pressure control valve is controlled in an open loop and an indicated injection quantity of fuel that should be injected from fuel injection valves arithmetically calculated by predetermined arithmetic processing on the basis of the operating state of an engine exceeds zero, when it has been determined that the difference between a minimum fuel through-flow rate in the flow rate control valve determined by a predetermined map from an engine speed Ne and the indicated injection quantity and a fuel through-flow rate decided in closed loop control of the flow rate control valve is larger than a predetermined threshold value K, it is determined there is injection abnormality.Type: GrantFiled: April 9, 2009Date of Patent: September 24, 2013Assignee: Bosch CorporationInventor: Hirotaka Kaneko
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Patent number: 8522530Abstract: A reducing agent injection valve abnormality detection device for detecting clogging of a reducing agent injection valve in a reducing agent injection device has a pressure detection component that detects the pressure inside a supply path based on a sensor value of a pressure sensor, a pump control component that fixes the output of a pump in a state where the pressure inside the supply path has become a value in a predetermined range, a reducing agent injection valve control component that opens the valve for a predetermined amount of time in a state where the output of the pump has been fixed, and a clogging determination component that determines the extent of clogging of the reducing agent injection valve by comparing, with plural threshold values, the pressure, or a pressure drop quantity, inside the supply path when the valve has been opened for the predetermined amount of time.Type: GrantFiled: October 25, 2010Date of Patent: September 3, 2013Assignee: Bosch CorporationInventors: Hiroyuki Igarashi, Eiji Nakao