公开(公告)号：US5259344A

公开(公告)日：1993-11-09

申请号：US772079

申请日：1991-10-07

申请人： Huei-Huay Huang ,  Ming-Hong Jeng ,  Nien-Tzu Chang ,  Tsung-Cheng Wang

发明人： Huei-Huay Huang ,  Ming-Hong Jeng ,  Nien-Tzu Chang ,  Tsung-Cheng Wang

IPC分类号： F02B23/10 ,  F02B75/02 ,  F02B75/12 ,  F02D17/02 ,  F02D41/00 ,  F02D41/34 ,  F02D41/36 ,  F02D3/00

CPC分类号： F02D41/34 ,  F02D17/02 ,  F02D41/0087 ,  F02B2075/025 ,  F02B2075/125 ,  F02B23/101 ,  F02D2400/04 ,  Y02T10/123 ,  Y02T10/44

摘要： An intermittent fuel-injection method for two-stroke engine, which is done by means of an injection nozzle mounted under a cylinder head or on cylinder wall so as to have fuel directly injected into a cylinder to mix the air inside the cylinder into a homogeneous mixture; a controller is used for controlling the fuel-injection timing and quantity; the controller determines the injection timing and quantity in accordance with the engine intake air flow quantity and engine rpm; under idle running or low-load running condition, an intermittent fuel-injection control method is used so as to enable an engine to perform one, two, three, four or five scavenging and exhaust cycles after one fuel-injection cycle in order to obtain a steady and high combustion efficiency.

摘要翻译： 一种用于二冲程发动机的间歇式燃料喷射方法，其通过安装在气缸盖或气缸壁下方的喷嘴进行，以将燃料直接喷射到气缸中，以将气缸内的空气混合成均匀的 混合物; 控制器用于控制燃料喷射正时和数量; 控制器根据发动机进气量和发动机转速来确定喷射正时和数量; 在怠速运行或低负载运行状态下，使用间歇燃料喷射控制方法，以使得发动机能够在一次燃料喷射循环之后执行一次，二次，三次，四次或五次清除和排气循环，以获得 稳定高燃烧效率。

公开(公告)号：US5241853A

公开(公告)日：1993-09-07

申请号：US806187

申请日：1991-12-13

申请人： Jin-Torng Tsuei ,  Tsung-Cheng Wang ,  Huan-Lung Gu

发明人： Jin-Torng Tsuei ,  Tsung-Cheng Wang ,  Huan-Lung Gu

IPC分类号： F01N13/00 ,  F02B1/04 ,  F02B75/02 ,  F02D41/14 ,  G01M15/10

CPC分类号： G01M15/104 ,  F01N13/008 ,  F02D41/1439 ,  F02D41/1493 ,  F02B1/04 ,  F02B2075/025 ,  F02D2400/04

摘要： This invention is directed to an exhaust fume sampling apparatus for a two-stroke gasoline engine with a closed loop engine control unit. The novel exhaust fume sampling apparatus has a fume duct, a sampling valve, and a sensor. The fume duct is connected at one end thereof with a fume inlet disposed in the wall of combustion chamber and is in communication at other end thereof with the exhaust pipe of the engine. The sampling valve is disposed on the fume duct and is capable of being opened up at the moment shortly after the combustion has taken place so as to permit the exhaust fume so produced to pass therethrough to enter the sampling apparatus. The sensor can measure the oxygen content of the exhaust fume introduced into the sampling apparatus and transmit the information in reference to the measured oxygen content to the engine control unit, which regulates the supply of fuel to engine in accordance with the information it has received from the sensor so that an optimum air-fuel ratio is attained.

摘要翻译： 本发明涉及一种具有闭环发动机控制单元的二冲程汽油发动机的排气抽气装置。 新型排气烟气采样设备具有通风管，取样阀和传感器。 烟道在其一端连接有设置在燃烧室壁中的烟气入口，并且在其另一端与发动机的排气管连通。 采样阀设置在通风管上，并且能够在燃烧发生之后很短时间内被打开，以便允许所产生的废气通过其进入采样设备。 传感器可以测量引入采样设备的排气的氧含量，并将参考测量的氧气含量的信息传输给发动机控制单元，发动机控制单元根据从发动机控制单元收到的信息来调节对发动机的燃料供应 该传感器达到最佳的空燃比。