Mazda

An oil supply apparatus includes a variable capacity oil pump 81, a hydraulic pressure detection section 50a detecting a hydraulic pressure in an oil supply passage 5, an oil control valve 84 changing an oil discharge amount, a mechanical relief valve 81z partially discharging oil to outside of the oil supply passage when a discharge hydraulic pressure of the oil pump exceeds an upper limit pressure, a temperature detection section 50b detecting a temperature of an engine, and a control section 60. When the temperature is equal to or higher than a set temperature, the oil control valve is subject to feedback control such that the hydraulic pressure matches a target hydraulic pressure. When the temperature is lower than the set temperature, the feedback control is prohibited, and the oil control valve is controlled such that an oil discharge amount becomes a maximum amount.

[Problem] To efficiently transmit a frontal collision load, which is directed from a front frame to the rear of a vehicle, to a side sill and a tunnel side frame that are offset from the front frame in a vehicle front view during a frontal collision of the vehicle. [Solution] Side sills 4 arranged along both left and right sides of a floor panel 1 are each arranged at a position that overlaps a lower end portion of a respective outer hinge pillar 72 in an inward displaced shape, in which a lower portion is displaced inward in a vehicle width direction, in the vehicle width direction. A rear portion 32 of each of front frames 3 provided on both left and right sides in a front space PR of a dash panel 2 is formed as a rear enlargement portion gradually enlarged toward a rear end portion and is formed as a part of a cast body 100, a rear end portion of which is joined to the dash panel 2. The rear end portion of the cast body 100 is configured to overlap a front end portion of each of the side sills 4 and a front end portion 122 of a tunnel side frame 12 provided in a tunnel portion 10 of the floor panel 1 in a vehicle front view.

[Problem] To firmly support an apron frame provided on an outer side of a suspension housing by a hinge pillar via a bracing rein even when a front wheel is arranged on a front side as in an FR sports car, for example.[Solution] The invention includes: a hinge pillar extending in an up-down direction on a vehicle width outer side of a dash panel 2; a side sill 4 extending in a vehicle rear direction from vicinity of a lower end portion of a hinge pillar 7; an apron frame 8 extending forward from vicinity of an upper portion of the hinge pillar 7 and supporting a vehicle outer side of a front-wheel suspension housing 65; and bracing reins 91, 92 obliquely joining a front portion of the hinge pillar 7 and a lower portion of the apron frame 8 in a vehicle side view. In the hinge pillar 7, a hinge pillar closed cross section 7S extending in the up-down direction is displaced forward to a bottom near a height of the side sill 4, and lower end portions of the bracing reins 91, 92 are joined to a portion of the hinge pillar 7 in front of an upper end portion thereof.

An engine exhaust gas purification apparatus 100 includes a catalyst device 51 that contains palladium and rhodium as precious metal and purifies exhaust gas, a linear A/F sensor SW7 provided on an exhaust passage 50 downstream of the catalyst device 51, and a control device 60 that controls a fuel injection valve 18 so as to set the air-fuel ratio of the exhaust gas to a target air-fuel ratio on the basis of the air-fuel ratio detected by the sensor SW7, and the control device 60 determines whether the catalyst device 51 is active and determines whether the catalyst device 51 is deteriorated, and sets the target air-fuel ratio to a first air-fuel ratio on a leaner side when determining that the catalyst device 51 is not active and determining that the catalyst device 51 is deteriorated than when determining that the catalyst device 51 is not deteriorated.

A plurality of independent passages (51), a collecting passage (52), a catalyst device (6), and a swirling part (53) are provided to an exhaust passage, the plurality of independent passages (51) individually extending from exhaust port opening ends (12), exhaust gas that passes through the independent passages being collected in the collecting passage (52), the swirling part (53) connecting the collecting passage to the catalyst device (6) to cause the exhaust gas to swirl in the swirling part. The plurality of independent passages and the collecting passage have, as a whole, a shape that is bent in such a way as to bulge toward an exhaust side from the plurality of exhaust port opening ends and to extend downward, and the swirling part has a shape that causes the exhaust gas led out from the collecting passage to swirl about an axis extending along a cylinder arrangement direction.

An exhaust passage (2) is provided with an upstream-side passage (50) and a catalyst device (6), the upstream-side passage extending from exhaust port opening ends (12A), the catalyst device (6) being provided at a position lower than the exhaust port opening ends (12A). The upstream-side passage (50) is provided with a plurality of independent passages (51) arranged side by side in a cylinder arrangement direction, and individually connected to the exhaust port opening ends, the upstream-side passage bulges toward an exhaust side from the respective exhaust port opening ends and extends downward, and the catalyst device is disposed between a exhaust side surface of the engine body and the upstream-side passage in an attitude in which a center axis (X2) of the catalyst device (6) extends along the cylinder arrangement direction, the position overlapping with the respective independent passages when viewed along an up-down direction, and overlapping with the upstream-side passage when viewed along an engine width direction. The structure should cause an early temperature rise of the catalyst.

An exhaust passage includes first (not visible, behind 53 and 7) and second (8) purifying devices, and a plurality of independent passages (51). The first and second purifying device are arranged in this order in a flow direction of exhaust gas at a height lower than exhaust port opening ends. The plurality of independent passages (51) are fixed as to be in communication with the respective exhaust port opening ends. First (5) and second (7) connecting passages are provided in the exhaust passage. The first connecting passage (5) connects the respective exhaust port opening ends to an upstream end of the first purifying device. The second connecting passage (7) connects a downstream end of the first purifying device to an upstream end of the second purifying device (8). An EGR pipe (41) connects the second connecting passage (7) to an engine exhaust-side surface (1H) at a position higher than the first purifying device.

A battery module includes a plurality of cells and a fixing portion that fixes each of the plural cells. With support rigidity k of the fixing portion and mass m of the cell, k/m of two or more sets of the cell and the fixing portion is reference k/m. When a value of tan δ as a loss factor of the fixing portion is x, a minimum value k<min> of k is k<min> = 5.184 x 10<9>(1/x)<2>(1/m)<3>, a maximum value k<max> of k is k<max> = 482.2531x<2>m<5>, and k<min> < k<max>, k of the reference k/m falls within a range of k<min> ≤ k ≤ k<max>. By using the maximum k/m that is greater than the reference k/m and the minimum k/m that is less than the reference k/m, the dispersion D of (the reference k/m)/(the reference k/m), (the maximum k/m)/(the reference k/m), and (the minimum k/m)/(the reference k/m) satisfies 0.2 < D < 550.

A vehicle differential device capable of adjusting a differential limiting torque with a simple configuration is provided. It includes: a differential case 40 rotated by receiving driving force of a rear drive motor 21; a pair of side gears 60 coaxial with a rotation axis O of the differential case; a pinion gear 52 meshing with both of the pair of the side gears; and a differential limiting mechanism 70 that generates differential limiting torque T for limiting differential motion of rear wheels 3 of a vehicle 1. The differential limiting mechanism has a plurality of friction plates 80 pressed by each side gear in an axial direction.

A vehicle differential device capable of adjusting a differential limiting force with a simple configuration is provided. It includes: a differential case 40 rotated by receiving driving force of a rear drive motor 21; a pair of side gears 60 coaxial with a rotation axis O of the differential case; a pinion gear 52 meshing with both of the pair of side gears; and a differential limiting mechanism 70 that generates differential limiting force F for limiting differential motion of rear wheels 3 of a vehicle 1. The differential limiting mechanism has a plurality of friction plates 80 pressed by each side gear in an axial direction X.