METHOD OF MODELLING AFR TO COMPENSATE FOR WRAF SENSOR

    公开(公告)号:EP3464859A1

    公开(公告)日:2019-04-10

    申请号:EP17729403.0

    申请日:2017-05-23

    IPC分类号: F02D41/14

    摘要: A method of providing a model which provides air/fuel ratio at a point of an air/fuel sensor located in an exhaust system of an engine includes a) providing a first model which provides a first air/fuel ratio which is outlet from an exhaust manifold of the engine; b) measuring or estimating volumetric flow through the exhaust; c) applying a transfer function to the first air/fuel ratio to provide a model of the air/fuel ratio at the sensor. The transfer function includes a first order filter and is dependent on the volumetric flow. The transfer function has a time constant equivalent to a filter coefficient which is 1/time constant which is determined based on the flow rate.

    EVAPORATOR ARRANGEMENT
    5.
    发明公开
    EVAPORATOR ARRANGEMENT 审中-公开
    VERDAMPFERANORDNUNG

    公开(公告)号:EP3025883A1

    公开(公告)日:2016-06-01

    申请号:EP15185800.8

    申请日:2015-09-18

    IPC分类号: B60H1/00 F28F9/00

    摘要: A seal (16) adapted to obtrude the peripheral orifice (P) between the external faces of an evaporator (12) and the internal faces of a housing (14) surrounding the evaporator (12). The seal (16) is an integral closed elastic band having an inner side and an outer side and adapted to be stretched and to be arranged in extension around the evaporator (12) so that, the inner side of the band contacts the evaporator (12) and, the outer side of the band contacts the housing (14).

    摘要翻译: 适于在蒸发器(12)的外表面和围绕蒸发器(12)的壳体(14)的内表面之间超出外围孔口(P)的密封件(16)。 密封件(16)是具有内侧和外侧并且适于被拉伸并围绕蒸发器(12)延伸布置的整体封闭的弹性带,使得带的内侧与蒸发器(12)接触 ),并且带的外侧接触壳体(14)。

    Method and apparatus to control an ignition system with two coils for one spark plug
    7.
    发明公开
    Method and apparatus to control an ignition system with two coils for one spark plug 审中-公开
    用于控制与两个线圈的点火系统的火花塞的方法和装置

    公开(公告)号:EP2876298A1

    公开(公告)日:2015-05-27

    申请号:EP13193801.1

    申请日:2013-11-21

    摘要: An ignition system including a spark plug control unit adapted to control at least two stages comprising a first transformer (T1) including a first primary winding (L1) inductively coupled to a first secondary winding (L2); a second transformer (T2) including a second primary winding (L3) inductively coupled to a second secondary winding (L4); said control unit enabled to simultaneously energize and deenergize primary windings (L1, L3) by simultaneously switching on and off two corresponding switches (Q1, Q2) to maintain a continuous ignition fire, wherein means to implement operation is based solely on selective switching of switches Ql and Q2.

    摘要翻译: 点火系统包括一个火花塞适应控制单元,控制在至少两个阶段,包括第一变压器(T1),其包括第一初级绕组(L1)电感耦合到第一次级绕组(L2); 第二变压器(T2),包括第二初级绕组(L3)感应地耦合到第二次级绕组(L4); 所述使能控制单元,用于同时激励和通过同时接通和关断两个相应的开关(Q1,Q2),以保持连续的点火火断电初级绕组(L1,L3),worin手段来实施操作完全是基于开关的选择性切换 Q和Q2。

    IGNITION SYSTEM
    8.
    发明公开
    IGNITION SYSTEM 审中-公开
    点火系统

    公开(公告)号:EP2825767A1

    公开(公告)日:2015-01-21

    申请号:EP13710399.0

    申请日:2013-03-18

    摘要: An ignition system for an internal combustion engine comprises an ignition transformer with two primary windings (L
    P1 , L
    P2 ). The ignition system is designed to generate, for a given ignition event, a unipolar current (I
    SEC ) through the secondary winding (L
    SEC ) by way of a control circuit (20) that is configured to first energize and deenergize the first primary winding (L
    P1 ) to establish a first electrical arc across the sparkplug electrodes (14) and, when the current (I
    SEC ) in the secondary winding reaches, or drops below, a current threshold (I
    SEC_TH ), repeatedly energizes and deenergizes the second primary winding (L
    P2 ) to establish a plurality of second current pulses across the electrodes in order to maintain the burn phase.

    Transformer
    9.
    发明公开
    Transformer 有权
    变压器

    公开(公告)号:EP2811495A1

    公开(公告)日:2014-12-10

    申请号:EP13170704.4

    申请日:2013-06-05

    IPC分类号: H01F38/00 H01F3/12

    CPC分类号: H01F3/12 H01F27/022 H01F38/12

    摘要: A transformer comprises a magnetic core and a magnetic return path element providing a magnetic return path for the magnetic core. The magnetic core is generally located between two end faces of the magnetic return path element. A primary coil or winding surrounds the magnetic core. A secondary coil or winding surrounds the primary winding/coil. A first gap component is located between one end of the magnetic core and one corresponding end face of the magnetic return path element. A second gap component is located between the other end of the magnetic core and the corresponding other end face of the magnetic return path element.

    摘要翻译: 变压器包括磁芯和为磁芯提供磁回路径的磁回路元件。 磁芯通常位于磁性返回路径元件的两个端面之间。 初级线圈或绕组围绕磁芯。 次级线圈或绕组围绕初级绕组/线圈。 第一间隙部件位于磁芯的一端和磁性返回路径元件的一个对应端面之间。 第二间隙部件位于磁芯的另一端和磁性返回路径元件的对应另一端面之间。

    PINTLE VELOCITY DETERMINATION IN A SOLENOID FUEL INJECTOR AND CONTROL METHOD
    10.
    发明公开
    PINTLE VELOCITY DETERMINATION IN A SOLENOID FUEL INJECTOR AND CONTROL METHOD 有权
    的方法和装置,用于确定电磁燃料喷射针的速度

    公开(公告)号:EP2761155A1

    公开(公告)日:2014-08-06

    申请号:EP12759488.5

    申请日:2012-09-20

    IPC分类号: F02D41/20

    摘要: The invention concerns a method of determining the velocity of a pintle assembly in a solenoid fuel injector during a closing stroke of the pintle assembly, wherein a braking step is performed during the closing stroke, which comprises operating an injector driver with current regulator to establish a braking current in the solenoid coil. The velocity of the pintle assembly is derived from the duty-cycle of the current regulator during the braking step. A method of operating a solenoid fuel injector, in particular for gaseous fuel, using the so-determined pintle velocity is also disclosed.