Motor vehicle starter pinion with improved acoustic performance

    公开(公告)号:US10900457B2

    公开(公告)日:2021-01-26

    申请号:US16082595

    申请日:2017-02-23

    发明人: Guy Faucon

    摘要: The invention relates mainly to an assembly comprising: —a combustion engine ring gear having a plurality of teeth, the said ring gear being defined by a modulus and a pressure angle, —a starter comprising a pinion (31) able to engage with the said ring gear of the said combustion engine, the said pinion (31) having a plurality of teeth (42) is defined by a modulus (Mp) and a pressure angle (alpha_p), characterized in that a pinion product which is the product of the modulus (Mp) of the said pinion (31) and the cosine of the pressure angle (alpha_p) of the said pinion (31) is greater than a ring-gear product equal to the product of the modulus of the said ring gear and the cosine of the pressure angle of the said ring gear.

    Pulley assembly for a rotary electrical machine

    公开(公告)号:US10895313B2

    公开(公告)日:2021-01-19

    申请号:US16074596

    申请日:2017-01-30

    摘要: Pulley assembly (111) comprising a hollow shaft (112) with an axis X, the hollow shaft (112) being suitable for being mounted on a shaft of a rotating electrical machine, the hollow shaft comprising at least one thread or tapping (132, 133) and a collar (113) extending radially outwards, wherein said hollow shaft also includes: a nut (128, 129) screwed on the hollow shaft via the thread or tapping; a spring (126) mounted about a portion of the nut; at least one ball bearing (122, 123) tightly fitted to the hollow shaft; a pulley (130), tightly fitted to said at least one bearing, about the spring, the nut and the hollow shaft. The nut (128, 129) includes a radial shoulder (131) mounted between the spring (126, 127) and the ball bearing (122, 123), the spring being held axially between the collar (113) and the radial shoulder (131).

    ROTATING ELECTRICAL MACHINE WITH A VARIABLE STATOR NOTCH WIDTH

    公开(公告)号:US20200052533A1

    公开(公告)日:2020-02-13

    申请号:US16604003

    申请日:2018-04-19

    IPC分类号: H02K1/16

    摘要: The invention relates mainly to a rotating electrical machine (10) for a motor vehicle, comprising:—a rotor;—a stator (11) extending along an axis, said stator (11) comprising a body (24) provided with a plurality of stator teeth (28) defining slots (30, 30′),—the stator (11) comprising a winding with conductors (35) housed in the slots (30, 30′);—in a plane (P) orthogonal to the axis along which the stator (11) extends,—a first slot (30) has a first width (L1) measured in an orthoradial direction, radially in the middle of the first slot (30), and—a second slot (30′), separate from the first slot (30), has a second width (L2) measured along an orthoradial direction, radially in the middle of the second slot (30′); characterised in that the first slot width (L1) is different from the second slot width (L2).

    Motor vehicle starter equipped with a thermal protection system

    公开(公告)号:US10541589B2

    公开(公告)日:2020-01-21

    申请号:US15738259

    申请日:2016-06-22

    摘要: The invention relates mainly to a starter for a heat engine of a motor vehicle comprising: at least one electromagnetic switch comprising a positive output terminal, at least one electric motor, said electric motor comprising: a stator comprising coils, each of the coils being wound around a pole piece to form a pole, at least one brush cage (43), at least one positive brush (35) mounted in said brush cage, an electrical path between said positive brush (35) and the positive output terminal (32), and at least one thermal protection (96) located in said electrical path, in which said thermal protection is able to disconnect said two elements (93, 95) when the thermal protection has a temperature above a temperature threshold for electrically disconnecting said positive output terminal with respect to said positive brush (35).

    ROTARY ELECTRICAL MACHINE WITH OPTIMISED COOLING

    公开(公告)号:US20190149017A1

    公开(公告)日:2019-05-16

    申请号:US16098502

    申请日:2017-05-12

    IPC分类号: H02K9/19

    摘要: The invention relates mainly to a rotary electrical machine including: a bearing (12); a stator (11) including a stator body (13); and a tubular ring (27), said stator body (13) being mounted braced in the ring (27); a cooling chamber (28) for circulating coolant liquid defined by an outer periphery of said tubular ring (27) and an inner periphery of said bearing (12); said bearing (12) including an intake and an outlet of coolant liquid, said machine including a separating wall (42) for separating said cooling chamber (28) extending between said intake and said outlet of coolant liquid, said separating wall (42) being added relative to said tubular ring (27) and including at the ends thereof attachment members for holding said wall (42) on said tubular ring (27).

    Method and device for starting or restarting thermal engine

    公开(公告)号:US10161373B2

    公开(公告)日:2018-12-25

    申请号:US15318933

    申请日:2015-06-11

    摘要: The method according to the invention calls upon a rotary electric machine (1) comprising a drive member (3) and a transmission member (4) of the belt or chain type, collaborating with the drive member and with the combustion engine (2) in order to start or restart the combustion engine, a tensioner (6) being provided to press against one strand (7) of the transmission member that extends between the rotary electric machine and the combustion engine. According to the invention, in a first stage, the rotary electric machine (1) supplies a predetermined reduced torque in the direction of starting for a predetermined duration in order to tension the transmission member (4) and then, in a second stage, the rotary electric machine (1) supplies a predetermined optimum torque for rapidly turning over the combustion engine (2) and causing it to start.