Air-fuel ratio control system for internal combustion engine
    41.
    发明授权
    Air-fuel ratio control system for internal combustion engine 失效
    内燃机空燃比控制系统

    公开(公告)号:US5797370A

    公开(公告)日:1998-08-25

    申请号:US804008

    申请日:1997-02-21

    摘要: An air-fuel ratio control system for an internal combustion engine having a fuel injection valve for each cylinder and an electronic air control valve (EACV) for controlling intake air bypassing the engine throttle valve. When the target air-fuel ratio is switched over from a rich value to a lean value, the amounts of fuel injected into the cylinders, for example, #1, #2, #3 and #4 cylinders are controlled so that they are sequentially decreased at predetermined intervals, and the EACV is controlled to be opened stepwise. This causes a decrease in engine torque generated by the switching-over of the target air-fuel ratio to be offset by an increase in engine torque generated by an increase in amount of air drawn, thereby preventing the generation of a torque shock. At this time, the target opening degree of the EACV is corrected based on the magnitude of the interval and the magnitude of a loading of the internal combustion engine, thereby further effectively preventing the generation of the torque shock.

    摘要翻译: 一种用于内燃机的空燃比控制系统,具有用于每个气缸的燃料喷射阀和用于控制旁路发动机节流阀的进气的电子空气控制阀(EACV)。 当将目标空燃比从浓值切换到稀薄值时,喷射到气缸中的燃料量例如#1,#2,#3和#4气缸被控制,使得它们依次 以预定间隔减小,并且EACV被控制为逐步打开。 这导致由于目标空燃比的切换而产生的发动机转矩的降低被由于吸入空气量增加而产生的发动机转矩的增加而抵消,从而防止产生转矩冲击。 此时,基于间隔的大小和内燃机的负载的大小来校正EACV的目标开度,从而进一步有效地防止产生转矩冲击。

    Method for preparing polyhydroxycarboxylic acid resin
    43.
    发明授权
    Method for preparing polyhydroxycarboxylic acid resin 失效
    聚羟基羧酸树脂的制备方法

    公开(公告)号:US5734007A

    公开(公告)日:1998-03-31

    申请号:US674453

    申请日:1996-07-02

    申请人: Junzo Otera Toru Yano

    发明人: Junzo Otera Toru Yano

    CPC分类号: C08G63/85 C08G63/06

    摘要: There is provided a method for easily preparing a polyhydroxycarboxylic acid resin in a one pot reaction by adding 1,3-substituted-1,1,3,3-tetraorganodistanoxan as a polymerization catalyst to a hydroxycarboxylic acid, such as L-lactic acid containing 10 to 50% of water as a starting material, and stirring while heating under a reduced pressure condition or in an organic solvent.

    摘要翻译: 提供了在一锅反应中容易地制备聚羟基羧酸树脂的方法,其中加入作为聚合催化剂的1,3-取代-1,1,3,3-四有机酪氨酸氧化物到羟基羧酸如含L-乳酸的 10〜50%的水作为原料,在减压条件下或有机溶剂中加热搅拌。

    Leaf brushes for small electric motor
    45.
    发明授权
    Leaf brushes for small electric motor 失效
    小电动叶片

    公开(公告)号:US4529899A

    公开(公告)日:1985-07-16

    申请号:US545234

    申请日:1983-10-25

    CPC分类号: H01R39/18

    摘要: Leaf brushes for small electric motors having commutator slide surfaces for making electrical contact with a motor commutator and constructed so that a multiplicity of fine ridges are densely formed on the commutator slide surfaces.

    摘要翻译: 具有用于与电动机换向器电接触的换向器滑动表面的小型电动机的叶子刷构造成使得在换向器滑动表面上密集地形成多个细脊。