Abstract: A method of implementing control logic of a compression-ignition engine is provided. A controller outputs a signal to a injector and a variable valve operating mechanism so that a gas-fuel ratio (G/F) becomes leaner than a stoichiometric air fuel ratio, and an air-fuel ratio (A/F) becomes equal to or richer than the stoichiometric air fuel ratio, and to an ignition plug so that unburnt mixture gas combusts by self-ignition after the ignition plug ignites mixture gas inside a combustion chamber. The method includes steps of determining a geometric compression ratio and determining the control logic defining an intake valve close timing IVC. IVC (deg.aBDC) is determined so that the following expression is satisfied: if the geometric compression ratio ? is 10??<17, 0.4234?2?22.926?+207.84+C?IVC??0.4234?2+22.926??167.84+C where C is a correction term according to an engine speed NE (rpm), C=3.3×10?10NE3?1.0×10?6NE2+7.0×10?4NE.
Abstract: A method of implementing control logic of a compression-ignition engine is provided. A control part of the engine performs a calculation according to the control logic corresponding to an engine operating state in response to a measurement of a measurement part, controls a fuel injection part, a variable valve operating mechanism, an ignition part and a supercharger so that a G/F becomes leaner than a stoichiometric air fuel ratio and a A/F becomes equal to or richer than the stoichiometric air fuel ratio, while causing the supercharger to boost, and controls the ignition part so that unburnt mixture gas combusts by self-ignition after the ignition. The method includes determining a supercharging pressure P, and determining control logic defining a close timing IVC of an intake valve. When determining the control logic, the close timing IVC (deg.aBDC) is determined so that the supercharging pressure P (kPa) satisfies the following expression: P?8.0×10?11IVC6?1.0×10?8IVC5+3.0×10?7IVC4?4.0×10?6IVC3+0.
Abstract: A second dynamic vibration absorber is higher in resonance frequency than a first dynamic vibration absorber. At least one of the resonance frequency of the first dynamic vibration absorber or the resonance frequency of the second dynamic vibration absorber is shifted from associated at least one of the first resonance frequency or the second resonance frequency such that a peak frequency of antiresonance occurring in a higher frequency region of the first dynamic vibration absorber than the resonance frequency of the first dynamic vibration absorber is substantially different from that of antiresonance occurring in a lower frequency region of the second dynamic vibration absorber than the resonance frequency of the second dynamic vibration absorber.
Abstract: A vehicle includes a driver's seat and a passenger's seat, an interior member, and an instrument panel. The instrument panel has a meter cluster portion and an information display portion. The interior member has, on a front side of the vehicle, a extending portion extending around a back side of the information display portion so as to be spaced from the information display portion, and the information display portion has a panel capable of displaying at least either one information of images or characters, and at least when the information is not displayed, enters a light transmission state so as to allow a driver to visually recognize the extending portion.
August 30, 2018
Date of Patent:
September 1, 2020
MAZDA MOTOR CORPORATION
Norihito Iwao, Seiji Sekine, Daiki Hamanaga, Jun Maruyama
Abstract: A turbocharger engine includes a dual stage turbocharger in which a first turbo unit is disposed on the upstream side of a second turbo unit on an exhaust passage. The turbocharger is disposed in such a manner that a second turbine shaft of the second turbo unit is far from an engine output shaft than a first turbine shaft of the first turbo unit in a plan view in an axis direction of a cylinder. Further, a second turbine is rotated clockwise around an axis thereof in a side view when the turbocharger is viewed from the side of the turbine, and an intra-turbine passage is disposed on the side of an engine body than the second turbine shaft.
Abstract: There are provided first and second loop-shaped structure sections which are provided to extend continuously along respective lower wall parts, respective right-and-left both side wall parts, and respective upper wall parts of a vehicle body so as to have a loop shape in a vehicle elevational view, respectively. The first and second loop-shaped structure sections are respectively positioned on an forward side and on a rearward side, in a vehicle longitudinal direction, of a damper support section. Each of these sections is formed by a closed-cross section portion where a closed-cross section is partitioned by plural members and/or a thick plate portion having a thicker plate thickness than a vehicle-body panel.
Abstract: The vehicle body structure including an inner rein coupled to a first portion of a vibration source in a vehicle and a component constituting a vehicle body; an outer rein coupled to the component and a second portion different from the first portion of the vibration source; and a damping structure arranged between the inner rein and the outer rein and configured to dampen vibrations transmitted along the inner rein and the outer rein, wherein the inner rein includes a portion that interrupts transmission of the vibration transmitted along the inner rein, and is connected to the second reinforcing member via the damping structure.
Abstract: There are provided first and second loop-shaped structure sections which are respectively provided to extend continuously along a lower wall part, right-and-left both side wall parts, and an upper wall part of a vehicle body so as to have a loop shape in a vehicle elevational view. The first loop-shaped structure section is positioned in front of a damper support section. A lower-side part of the second loop-shaped structure section which is located at a lower level than the damper support section is formed by a part of the first loop-shaped structure section and its upper-side part is positioned in back of the damper support section. Each of these loop-shaped structure sections is formed by a closed-cross section portion where a closed-cross section is partitioned by plural members and/or a thick plate portion having a thicker plate thickness than a vehicle-body panel.
Abstract: The present disclosure relates to a vehicle rear body structure in which a meeting section is constructed at an upper corner of a rear gate opening that is opened rearward in a body rear portion, and in the meeting section, a roof side rail that extends in a vehicle longitudinal direction in a body side portion and a rear header that extends in a vehicle width direction in the body rear portion meet. The vehicle rear body structure that improves rigidity of the body rear portion while suppressing relative displacement between the rear header and the roof side rail.
Abstract: A first loop-shaped structure section is provided on a forward side of and closely to a damper support section so as to have a loop shape in a vehicle elevational view. A second loop-shaped structure section is provided around a rear-gate opening portion so as to have a loop shape in the vehicle elevational view. A third loop-shaped structure section is provided to extend continuously along a lower side wall part interconnecting lower wall parts of the first and second loop-shaped structure sections, a side wall part of the first loop-shaped structure section, an upper side wall part interconnecting upper end portions of upper wall parts of the first and second loop-shaped structure sections, and a side wall part of the second loop-shaped structure section so as to have a loop shape in a vehicle side view.
Abstract: Present application discloses display apparatus including: display panel having display surface to display image; and overlaid member overlaid on display surface. Overlaid member partitions display surface into inner region at least partially surrounded by overlaid member, and outer region situated outside overlaid member. Image contains inner and outer images displayed in inner and outer regions. Display panel includes signal generator for generating first image signal for changing content of the inner image displayed in inner region in response to first switching signal outputted from first switch. Signal generator generates second image signal for changing content of the outer image displayed in outer region in response to second switching signal outputted from second switch which is more distant from steering wheel than first switch.
February 27, 2018
Date of Patent:
August 25, 2020
Mazda Motor Corporation
Yo Kitamura, Hado Morokawa, Seiji Hisada
Abstract: An intake and exhaust system of an engine is provided, which includes an exhaust gas recirculation (EGR) passage configured to recirculate a portion of exhaust gas as EGR gas, from an exhaust passage of the engine to an intake passage, and an EGR cooler disposed in the EGR passage, the EGR cooler being coupled to a passage wall of the exhaust passage at an EGR gas inlet side, and having a center line intersecting with a flow direction of exhaust gas in the exhaust passage. A through-hole communicating the EGR cooler with the exhaust passage is formed into a long hole elongated in the flow direction in the exhaust passage.
Abstract: Disclosed herein is a support structure for a rotary part of an engine (2). The support structure includes crank journal bearing metals (14) and crank pin bearing metals (24, 124). Each crank journal bearing metal (14) includes chamfers (16) and crowned portions (17). On the other hand, each crank pin bearing metal (24, 124) includes chamfers (26) and no crowned portion or crowned portions (127) on its inner peripheral surface. The crowned portions (127) are inclined at a smaller angle than the crowned portions (17).
Abstract: A vehicle display device includes a display for displaying an operation screen, an operation unit prepared separately from the display, and a display control unit for controlling display of the display according to an operation of the operation unit. The operation unit is configured to be turnable. The display control unit displays, on the operation screen, an operation unit image mimicking the shape of the operation unit, and a plurality of selection items selectable by a turning operation of the operation unit in an overlapping manner.
Abstract: In a side vehicle body structure for a vehicle, a reinforcing panel includes: a main reinforcing portion disposed so as to extend in a longitudinal direction of a side face portion along a first straight portion, a second straight portion, and a portion of a body panel which connects the first straight portion and the second straight portion; a first upper-end reinforcing portion disposed so as to extend upward toward the front of a vehicle body from an upper edge of the main reinforcing portion along a first curved portion; and a second upper-end reinforcing portion disposed so as to extend upward toward the rear of the vehicle body from the upper edge of the main reinforcing portion along a second curved portion.
Abstract: There are provided: a first communication device; a second communication device that communicates wirelessly with the first communication device; and a state detector that outputs state data indicating a state of a predetermined installation place. The first communication device includes: a storage; and a data controller that selectively executes a transmitting operation to transmit the state data to the second communication device and a storing operation to store the state data in the storage. The second communication device includes a signal generator that generates a stop notification signal notifying that the second communication device in operation stops an operation, and stops the operation after transmitting the stop notification signal to the first communication device.
Abstract: To provide an alarm system for a vehicle that can reduce alarms that can irritate a driver. An alarm system 1 for a vehicle includes a determination and alarm part 52 that determines whether or not an object will cross a right alarm line 61 or a left alarm line 62 within a predetermined time and activates an alarm unit when it is determined that the object will cross the alarm line within the predetermined time. When the relative velocity of the object with respect to the right alarm line 61 or the left alarm line 62 is decreasing, the determination and alarm part 52 performs an alarm reduction control to reduce operation of the alarm unit compared with when the relative velocity is not decreasing.
Abstract: A vehicle, such as a hybrid vehicle, according to one aspect of the present invention is configured such that: a propeller shaft rotated by an engine is arranged so as to extend in a vehicle body front-rear direction; a drive gear provided at a rear end portion of the propeller shaft and a driven gear configured to rotate together with a differential case of a differential device mesh with each other; a motor or a generator is connected to the differential case so as to transmit power to the differential case; the motor or the generator is arranged at one of vehicle width direction right and left sides of an axis of the propeller shaft; and the differential case is arranged at the other of the vehicle width direction right and left sides of the axis of the propeller shaft.
March 23, 2017
Date of Patent:
August 18, 2020
Mazda Motor Corporation
Seiji Hidaka, Eiji Mito, Tomoo Sawazaki, Hideo Toyota