公开(公告)号：US10605205B1

公开(公告)日：2020-03-31

申请号：US15721911

申请日：2017-10-01

Applicant: Peter G. Szczepanski

Inventor： Peter G. Szczepanski

IPC: F02M3/08 ,  F02M17/04

Abstract: An external idle air bypass for carbureted engines having a threaded housing containing a ball valve, which mounts to the outside of the carburetor at a passage which admits air to the intake plenum beneath the carburetor's throttle blades. The threaded housing may be made of metal or other materials. The ball valve may be made from brass and steel, though other materials can be used. A handle is used to operate the ball valve and is retained by a threaded nut. An air cleaner may be attached to the valve housing. Opening and closing the ball valve permits a precisely metered amount of air to enter the engine at idle, enabling the mechanic to vary the amount and air/fuel ratio of the engine without disturbing the throttle blades.

公开(公告)号：US07536992B1

公开(公告)日：2009-05-26

申请号：US12056864

申请日：2008-03-27

Applicant: Paul A. Wieshuber ,  James T. Beaucaire ,  Michael A. Majewski

Inventor： Paul A. Wieshuber ,  James T. Beaucaire ,  Michael A. Majewski

IPC: F02D31/00 ,  F02D41/08 ,  F02D41/10 ,  F02M3/08

CPC classification number: F02D31/007 ,  F02D41/2422 ,  F02D41/2451 ,  F02D2041/1409 ,  F02D2041/1422

Abstract: A PI control strategy controls engine speed to an engine speed set-point. A proportional map (36) is populated with data values to be used in calculating the P component of the strategy. An integral map (38) is populated with data values to be used in calculating the I component. Each data value in the maps is correlated with a speed data value representing engine speed (N) and a speed error data value representing the difference between engine speed and engine speed set-point (N_DIF_MAX_LIM). Values for proportional and integral components are selected from the respective maps by processing current engine speed data and current engine speed error data. The strategy uses the values from the maps for controlling engine speed to the speed set-point. Data values from other maps (20 and 24; or 22 and 26) modify the selected values from the proportional and integral maps (36, 38) for transmission type, transmission gear, and engine temperature.

Abstract translation: PI控制策略将发动机转速控制到发动机转速设定值。 比例图（36）填充有用于计算策略的P分量的数据值。 积分图（38）填充有用于计算I分量的数据值。 地图中的每个数据值与表示发动机转速（N）的速度数据值和表示发动机转速和发动机转速设定值（N_DIF_MAX_LIM）之间的差的速度误差数据值相关。 通过处理当前发动机转速数据和当前发动机转速误差数据，从各个图中选择比例积分分量的积分值。 该策略使用地图中的值来控制发动机转速到速度设定点。 来自其他地图（20和24;或22和26）的数据值从传动类型，传动齿轮和发动机温度的比例积分图（36,38）中修改所选值。

公开(公告)号：US20070235006A1

公开(公告)日：2007-10-11

申请号：US11597614

申请日：2005-05-20

Applicant: Takahiro Nishigaki ,  Kazuhiro Ichimoto

Inventor： Takahiro Nishigaki ,  Kazuhiro Ichimoto

IPC: F02M3/08

CPC classification number: F02D31/003 ,  B60K6/445 ,  B60W10/06 ,  B60W2710/0644 ,  B60W2710/065 ,  F02D41/083 ,  F02D41/2438 ,  F02D41/2451 ,  F02N11/0818 ,  Y02T10/16 ,  Y02T10/6239

Abstract: An engine ECU learns a base duty ratio command of an actuator for driving a throttle valve as an operation level of engine control on condition that a target idle rotation speed Nei* enters a predetermined rotation speed range during idling of an engine as one prerequisite. When the learning is incomplete, the engine ECU rejects an up request of the target idle rotation speed Nei* sent from an air conditioner ECU and prohibits the target idle rotation speed Nei* from being changed. The control procedure of the invention effectively prohibits a change of the target idle rotation speed Nei* under the condition of incomplete learning of the operation level of engine control. The prohibition of the change desirably keeps the target idle rotation speed Nei* within the predetermined rotation speed range, thus preventing failed fulfillment of the learning condition and ensuring the sufficient learning opportunities of the operation level of engine control.

Abstract translation: 在发动机怠速运转期间，当目标怠速转速Nei *进入预定的转速范围时，发动机ECU学习用于驱动节气门的致动器的基本占空比指令作为发动机控制的操作水平。 当学习不完全时，发动机ECU拒绝从空调ECU发送的目标怠速转速Nei *的上升请求，并且禁止改变目标空转转速Nei *。 本发明的控制程序在不完全学习发动机控制的操作水平的条件下有效地禁止了目标怠速转速Nei *的变化。 这种改变的禁止期望将目标怠速转速Nei *保持在预定的转速范围内，从而防止学习条件的失败，并确保发动机控制的操作水平的足够的学习机会。

公开(公告)号：US6123322A

公开(公告)日：2000-09-26

申请号：US97956

申请日：1998-06-16

Applicant: Hidenori Sasaki

Inventor： Hidenori Sasaki

IPC: F02M3/08 ,  F02M3/10 ,  F02M17/04 ,  F02M19/02 ,  F02M19/025

CPC classification number: F02M19/02 ,  F02M17/04 ,  F02M3/10 ,  Y10S261/39 ,  Y10S261/68 ,  Y10S261/84

Abstract: A carburetor having an idle nozzle and a main nozzle each with a fixed flow area and an idle speed single adjustment screw adjustable by the user. The idle and high speed fuel flows are controlled by the idle nozzle and the main nozzle, respectively. The user can adjust the engine speed only by adjustment of the idle speed adjustment screw which changes the position of the carburetor throttle valve to control the flow through the carburetor. This provides a more consistent fuel and air mixture to improve the performance of the engine and better control engine emissions by preventing the user from changing the fuel and air ratio to a mixture which is either too lean or too rich for the steady and low level exhaust emission operation of the engine.

Abstract translation: 具有怠速喷嘴的化油器和各自具有固定流动面积的主喷嘴和用户可调节的怠速单次调节螺钉。 怠速和高速燃料流量分别由怠速喷嘴和主喷嘴控制。 用户只能通过调节怠速调节螺丝来调节发动机转速，从而改变化油器节流阀的位置，以控制通过化油器的流量。 这提供了更一致的燃料和空气混合物以改善发动机的性能并且通过防止使用者将燃料和空气比改变为对于稳定和低水平排气来说太稀或太浓的混合物来更好地控制发动机排放 发动机的排放作业。

公开(公告)号：US6062196A

公开(公告)日：2000-05-16

申请号：US182476

申请日：1998-10-30

Applicant: Ralf Haboldt

Inventor： Ralf Haboldt

IPC: F02D45/00 ,  F02D31/00 ,  F02D41/08 ,  F02D41/16 ,  F02M3/08

CPC classification number: F02D41/16 ,  F02D31/004

Abstract: The invention relates to a method and an arrangement for controlling an actuator unit of a drive unit. In a first operating state, the actuator unit is controlled in dependence upon a desired rpm and an actual rpm. This first operating state is present when the actuator unit is in its idle position or the road speed drops below a pregiven threshold value.

Abstract translation: 本发明涉及一种用于控制驱动单元的致动器单元的方法和装置。 在第一操作状态下，致动器单元根据期望的转速和实际转速进行控制。 当执行器单元处于其空转位置或道路速度低于预定阈值时，存在该第一操作状态。

公开(公告)号：US5667734A

公开(公告)日：1997-09-16

申请号：US650195

申请日：1996-05-20

Applicant: Shinichi Ohgane

Inventor： Shinichi Ohgane

IPC: F02M3/10 ,  F02M3/08 ,  F02M19/04

CPC classification number: F02M3/08 ,  F02M2003/105 ,  Y10S261/38 ,  Y10S261/84 ,  Y10T137/7062

Abstract: A carburetor in which no deviation or change occurs in the adjusted position of a fuel regulating needle valve and when a cap for limiting the adjustment is mounted on the fuel regulating valve the cap cannot be intentionally broken or removed. A flow area of a fuel pasage of a carburetor body is adjusted by a needle valve received in a threaded hole in the body. Adjacent the threaded hole the carburetor body has a cylindrical cavity having a larger diameter than that of the threaded hole. A larger-diameter threaded portion is provided on the needle valve adjacent its head. A stop ring in contact with a shoulder in the cylindrical cavity is fitted on the larger-diameter threaded portion of the valve. A cup-shaped cap is fitted on the serrated head of the fuel regulating valve. An axial protrusion formed on the outer peripheral wall of the cap is engaged with an axial groove opening into the peripheral wall of the cylindrical cavity. A retaining plate having an opening through which the cap can be inserted is fixed to the outer end wall of the cylindrical cavity of the carburetor body.

Abstract translation: 一种化油器，其中燃油调节针阀的调节位置不发生偏差或变化，并且当用于限制调节的盖安装在燃料调节阀上时，盖不能有意地被破坏或移除。 化油器主体的燃料喷嘴的流动面积通过容纳在主体的螺纹孔中的针阀来调节。 化油器本体与螺纹孔相邻，具有直径大于螺纹孔直径的圆柱形腔体。 较大直径的螺纹部分设置在与其头部相邻的针阀上。 与圆柱形腔中的肩部接触的止动环安装在阀的较大直径的螺纹部分上。 燃油调节阀的锯齿头上装有一个杯形帽。 形成在盖的外周壁上的轴向突起与通向圆柱形腔的周壁的轴向槽接合。 具有可以插入盖的开口的保持板固定到化油器主体的圆柱形空腔的外端壁上。

公开(公告)号：US5525267A

公开(公告)日：1996-06-11

申请号：US236364

申请日：1994-04-29

Applicant: Satoru Araki

Inventor： Satoru Araki

IPC: F02M3/10 ,  F02M19/04 ,  F16B41/00 ,  F02M3/08

CPC classification number: F16B41/005 ,  F02M3/10 ,  F02M2003/105 ,  Y10S261/38 ,  Y10S261/84 ,  Y10T137/7062

Abstract: A tamper resistant limit cap for a carburetor having manual adjust valves that are able to adjust the effective area of the main fuel passage and the slow speed fuel passage. The cap covers tightly on the head part of the main fuel adjust valve and includes a flange attached to the outside of the cap that abuts a stop upon rotation of the cap, a guide flange attached to the outside of the cap to locate, upon installation, the final position of the cap, and two projections on the inside of cap to prevent removal of the cap from valve head part or independent rotation of the cap and head part relative to each other.

Abstract translation: 具有能够调节主燃料通道和慢速燃料通道的有效面积的手动调节阀的化油器的防篡改限位帽。 盖帽紧紧地覆盖在主燃料调节阀的头部上，并且包括附接到盖的外侧的凸缘，其在盖旋转时抵靠止动件;安装在盖的外部以定位的引导凸缘 ，盖的最终位置以及在盖的内侧上的两个突起，以防止帽从阀头部分移除或者帽和头部相对于彼此的独立旋转。

公开(公告)号：US4578228A

公开(公告)日：1986-03-25

申请号：US667016

申请日：1984-11-01

Applicant: Reinhard Gerhardy

Inventor： Reinhard Gerhardy

IPC: F02M3/12 ,  F02B1/04 ,  F02M3/10 ,  F02M3/14 ,  F02M3/08

CPC classification number: F02M3/10 ,  F02B1/04 ,  Y10S261/68

Abstract: A carburetor for small motors has a housing with a carburetor bore wherein air and fuel are mixed to an air fuel mixture. The fuel enters the carburetor bore through fuel jets. A throttle valve is pivotally mounted in the carburetor bore by means of which the fuel-air mixture quantity is adjusted in dependence upon the operating condition of the engine. The throttle valve and the inner wall surface of the carburetor bore conjointly define an air gap in the idling position. An idling fuel outlet jet communicates with the carburetor bore in the region of this air gap and is connected to the control chamber containing the fuel. The idling fuel outlet jet together with a ventilation bore communicate with an emulsion chamber of the control compartment. Further, an idling control part is provided which is movable into the air gap whereby an outlet opening of the ventilation bore communicating with the emulsion chamber is passed over. In this way, the ratio of fuel to air in the emulsion chamber can be adapted to the air requirements when flowing into the carburetor bore from the outlet jet. By means of a change of the free cross-sectional opening of the ventilation jet occurring simultaneously with the entry of the control part into the air gap, the air to fuel ratio remains constant so that a subsequent adjustment of the components of the mixture is unnecessary.

Abstract translation: 用于小型电动机的化油器具有带有化油器孔的壳体，其中空气和燃料与空气燃料混合物混合。 燃油通过燃油喷射进入化油器孔。 节流阀枢转地安装在化油器孔中，通过该节气门，燃料 - 空气混合物量根据发动机的操作条件进行调节。 节流阀和化油器孔的内壁表面联合地限定空转位置的气隙。 空转的燃料出口喷射器与该气隙区域中的化油器孔连通并连接到包含燃料的控制室。 空转燃料出口喷射器和通风孔与控制室的乳剂室连通。 此外，设置有可移动到空气间隙中的空转控制部，通过与乳化室连通的通气孔的出口。 以这种方式，乳液室中的燃料与空气的比例可以适应于从出口喷射器流入化油器孔中时的空气需求。 通过与控制部件进入气隙同时发生的通气射流的自由横截面开口的变化，空气/燃料比保持恒定，使得混合物的组分随后的调整是不必要的 。

公开(公告)号：US4336208A

公开(公告)日：1982-06-22

申请号：US234185

申请日：1981-02-13

Applicant: Reinhard Gerhardy

Inventor： Reinhard Gerhardy

IPC: F02M3/10 ,  F02M17/04 ,  F02M19/00 ,  F02M19/01 ,  F16B39/34 ,  F02M3/08

CPC classification number: F02M19/00 ,  F02M17/04 ,  F02M3/10 ,  Y10S261/38

Abstract: A carburetor for an internal combustion engine in a power saw. The carburetor has at least one adjustment screw which is fastened and secured in a bore of a receiving part on the carburetor housing or on the internal combustion engine. A shim or clamping piece, which is secured against rotation, is arranged in a recess of the receiving part. The clamping piece receives the adjustment screw in a positive, locking manner. The clamping piece has projections with which the clamping piece is held locked in the recess of the receiving part.

Abstract translation: 用于动力锯中的内燃机的化油器。 化油器具有至少一个调节螺钉，其被固定并固定在化油器壳体或内燃机上的容纳部分的孔中。 被固定抵抗旋转的垫片或夹紧件布置在接收部分的凹部中。 夹紧件以正向锁定的方式接收调节螺钉。 夹紧件具有突起，夹持件通过该突出部被锁定在接收部的凹部中。

公开(公告)号：US4271095A

公开(公告)日：1981-06-02

申请号：US67909

申请日：1979-08-20

Applicant: Tooru Maeda

Inventor： Tooru Maeda

IPC: F02M3/10 ,  F16B23/00 ,  F16B41/00 ,  F02M3/08

CPC classification number: F16B23/0061 ,  F02M3/10 ,  F16B41/005 ,  F02M2003/105 ,  Y10S261/38 ,  Y10S261/84 ,  Y10T137/7062 ,  Y10T137/7065

Abstract: A carburetor for an internal combustion engine has an idle adjust screw. A cover is provided for encompassing the idle adjust screw so as to prevent any readjustment of the idle adjust screw by an operator. The cover is not removable once the carburetor is mounted on the intake pipe so that carburetor settings can be maintained. The cover may be formed with a slot of special configuration so that adjustment may be made only with a specially designed tool.

Abstract translation: 用于内燃机的化油器具有空转调节螺钉。 设置有用于包围怠速调节螺钉的盖，以防止操作者对怠速调节螺钉的任何重新调整。 一旦化油器安装在进气管上，盖子就不能拆卸，因此可以保持化油器设置。 盖可以形成有具有特殊构造的槽，使得可以仅通过专门设计的工具进行调节。