公开(公告)号：US4947818A

公开(公告)日：1990-08-14

申请号：US330319

申请日：1989-03-28

Applicant: Tatsuyoshi Kamohara ,  Tadashi Sugino ,  Toshio Suematsu ,  Satomu Nishimura

Inventor： Tatsuyoshi Kamohara ,  Tadashi Sugino ,  Toshio Suematsu ,  Satomu Nishimura

IPC: F02D41/14

CPC classification number: F02D41/1441 ,  F02D41/148 ,  F02D41/1495

Abstract: A warning system for an air-fuel ratio control system for a electronic controlled internal combustion engine, where a basic fuel injection amount is corrected by a feedback correction factor determined by a signal from an air-fuel ratio sensor arranged in an exhaust pipe. An amplitude of the feedback correction factor caused by an acceleration of the engine, where the exhaust from cylinders is not completely mixed, is detected, and a warning can be given when the amplitude of the feedback correction factor is larger than a predetermined value. A malfunction in the air-fuel ratio system occurring in one cylinder can be detected. In a double O.sub.2 sensor system, where a sub-feedback loop is provided for correcting the feedback correction factor in accordance with a signal from the second O.sub.2 sensor, the sub-feedback is stopped when the amplitude of the feedback correction factor is larger than a predetermined value, and a quick and precise detection of a malfunction is obtained by stopping the sub-feedback operation.

Abstract translation: 一种用于电子控制内燃机的空燃比控制系统的警告系统，其中通过由布置在排气管中的空燃比传感器的信号确定的反馈校正因子校正基本燃料喷射量。 检测由来自气缸的排气未完全混合的发动机的加速度引起的反馈校正因子的振幅，并且当反馈校正因子的振幅大于预定值时，可以给出警告。 可以检测到在一个气缸中发生的空燃比系统的故障。 在双O2传感器系统中，其中提供了用于根据来自第二O2传感器的信号校正反馈校正因子的子反馈回路，当反馈校正因子的幅度大于 通过停止副反馈操作来获得故障的快速和精确的检测。

公开(公告)号：US4870942A

公开(公告)日：1989-10-03

申请号：US223890

申请日：1988-07-25

Applicant: Norio Shibata ,  Hideaki Mizuno ,  Kouichi Satoya ,  Nobuki Uchitani ,  Tatsuyoshi Kamohara ,  Kenichi Harada ,  Mamoru Yoshioka ,  Takashi Kato ,  Hidemi Ohnaka

Inventor： Norio Shibata ,  Hideaki Mizuno ,  Kouichi Satoya ,  Nobuki Uchitani ,  Tatsuyoshi Kamohara ,  Kenichi Harada ,  Mamoru Yoshioka ,  Takashi Kato ,  Hidemi Ohnaka

IPC: F02M25/07

CPC classification number: F02M26/57 ,  F02M26/47 ,  F02M26/49 ,  F02D2041/0067 ,  F02D41/0065

Abstract: A diagnosis device for an exhaust gas recycling device diagnoses whether or not an exhaust gas recycling device is operating normally; the temperature of an exhaust gas recycling passage is detected by a temperature detection means, a decision is made by an exhaust gas recycling operating region detection means whether or not the operating region is such as to carry out exhaust gas recycling, when a decision is made that the operating region is such as to carry out exhaust gas recycling a counter is incremented and when otherwise is decremented, and a decision that the exhaust gas recycling is not being carried out normally, that is that the exhaust gas recycling device has failed, is made when the count value of this counter is at least a certain value and the temperature of the exhaust gas recycling passage is not more than a certain value.

Abstract translation: 废气回收装置的诊断装置诊断废气回收装置是否正常运转; 通过温度检测装置检测废气再循环通道的温度，当做出判定时，由废气再循环操作区域检测装置判定操作区域是否进行废气再循环 操作区域进行排气再循环，计数器增加，否则减量，并且废气再循环不正常进行，即废气回收装置失效的判定是 当该计数器的计数值至少为一定值且废气再循环通道的温度不超过一定值时进行。

公开(公告)号：US4472321A

公开(公告)日：1984-09-18

申请号：US417908

申请日：1982-09-14

Applicant: Tatsuyoshi Kamohara ,  Hidemi Oonaka

Inventor： Tatsuyoshi Kamohara ,  Hidemi Oonaka

IPC: F02M7/28 ,  F02M7/24

CPC classification number: F02M7/28 ,  Y10S261/74

Abstract: An altitude compensation device for a carburetor including a chamber in communication with the atmosphere, an air bleed port conducting atmosphere from the chamber, a primary conduit providing fluid communication between the chamber and the fuel system of the carburetor, a first valve responsive to changes in atmospheric pressure for opening and closing the air bleed port, a first flow restrictor in the primary conduit downstream of the air bleed port, an auxiliary conduit providing fluid communication between an atmospheric pressure source and the primary conduit at a junction downstream of the flow restrictor and upstream of the carburetor fuel system, a second valve responsive to changes in atmospheric pressure controlling communication between the auxiliary conduit and the atmospheric pressure source, a second flow restrictor in the auxiliary conduit downstream of the atmospheric pressure source and upstream of the junction with the primary conduit, and a thermosensitive valve responsive to engine temperature permitting communication with the atmosphere through the auxiliary conduit when engine temperature is below a predetermined level and preventing communication with the atmosphere through the auxiliary conduit when engine temperature is above the predetermined level.

Abstract translation: 一种用于化油器的高度补偿装置，包括与大气连通的室，从所述室传导气体的排气口，提供所述室和所述化油器的燃料系统之间的流体连通的主要管道，响应于所述化油器的变化的第一阀 用于打开和关闭排气口的大气压力，在排气口下游的主要管道中的第一限流器，辅助管道，其在流量限制器下游的连接处提供大气压力源和主要管道之间的流体连通; 在化油器燃料系统的上游，响应于控制辅助管道和大气压力源之间的连通的大气压力的变化的第二阀，位于大气压力源下游的辅助管道中的第二限流器以及与主要管道 导管和热敏阀 当发动机温度低于预定水平并且当发动机温度高于预定水平时通过辅助管道防止与大气相通的发动机温度允许通过辅助管道与大气连通。