公开(公告)号：US4816192A

公开(公告)日：1989-03-28

申请号：US123149

申请日：1987-11-20

申请人： Mohamed Abou-Aly ,  Eberhard Bohnacker ,  Bernhard Kiefel ,  Reinhard Gerhardy ,  Reinhard Friedrich ,  Erich Krauter

发明人： Mohamed Abou-Aly ,  Eberhard Bohnacker ,  Bernhard Kiefel ,  Reinhard Gerhardy ,  Reinhard Friedrich ,  Erich Krauter

IPC分类号： B27B17/00 ,  F02B63/02 ,  F02M15/02 ,  F02M15/04

CPC分类号： F02M15/022 ,  B27B17/00 ,  F02B63/02 ,  Y10S261/20

摘要： The invention is directed to a handheld, portable tool such as a chain saw equipped with an internal combustion engine mounted in an engine housing. The engine has a carburetor defining an air-intake channel. A heating element is provided which is electrically connected to the generator of the chain saw and mounted on the carburetor in the region of the air-intake channel. The heating element has a positive temperature coefficient and a predetermined temperature region thereby preventing the carburetor housing and the throttle flap from heating to a temperature above a predetermined value. The heating element and the way it is mounted prevents icing at the carburetor in cold weather thereby enabling the engine to run uninterruptedly and uniformly especially when the engine idles.

摘要翻译： 本发明涉及一种手持式便携式工具，例如装备有安装在发动机壳体中的内燃机的链锯。 发动机具有限定进气通道的化油器。 提供了一种加热元件，其与链锯的发电机电连接，并且安装在进气通道的区域中的化油器上。 加热元件具有正温度系数和预定温度区域，从而防止化油器壳体和节流阀片加热到高于预定值的温度。 加热元件及其安装方式可防止化油器在寒冷天气下结冰，从而使发动机不间断地和均匀地运行，特别是当发动机空转时。

公开(公告)号：US4691681A

公开(公告)日：1987-09-08

申请号：US878622

申请日：1986-06-26

申请人： Klaus Hoppner ,  Bernhard Kiefel

发明人： Klaus Hoppner ,  Bernhard Kiefel

IPC分类号： F01P1/02 ,  F02B63/02 ,  F02M31/14

CPC分类号： F01P1/02 ,  F02B63/02 ,  F02M31/145 ,  Y02T10/126

摘要： The invention is directed to an arrangement for controlling the intake air for the carburetor of a hand-held portable tool such as a motor-driven chain saw or the like. During winter operation, the cooling air that is heated by the engine cylinder is carried through a pass-through opening to the carburetor. During summer operation the pass-through opening is blocked by a slide that is pivotally mounted on a pivot axis. The slide selectively opens or closes the pass-through opening and is configured as a deflector which, in its open position baffles the heated cooling air from the engine cylinder and guides it toward the carburetor.

摘要翻译： 本发明涉及一种用于控制诸如电动链锯等的手持便携式工具的化油器的进气的装置。 在冬季运行中，由发动机气缸加热的冷却空气通过化油器的通过开口。 在夏季操作期间，通过开口被枢转地安装在枢转轴线上的滑块阻挡。 滑动件选择性地打开或关闭通过开口，并且被构造为偏转器，该偏转器在其打开位置使来自发动机气缸的加热的冷却空气导向化油器。