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1. 发明专利

JPH11264335A THROTTLE VALVE CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH11264335A
公开(公告)日：1999-09-28
申请号：JP8945298
申请日：1998-03-18
申请人： NIPPON SOKEN , TOYOTA MOTOR CORP
发明人： TANIMOTO KOICHI , OHARA YASUSHI , KAMINAGA KOICHI , TAKADA MITSURU
IPC分类号： F02D41/04
摘要： PROBLEM TO BE SOLVED: To reduce intake noises of an internal combustion engine while saving a space without deteriorating output performance. SOLUTION: In this control system, an ECU 61 controls a throttle valve opening governor 62 to decrease it to a specified value when an engine speed sensed by an engine speed sensor 63 is within a specified control area, and an accelerator opening sensed by an accelerator opening sensor 64 is larger than a specified threshold value. It is thus possible, according to these constitutions, to effectively reduce intake noises while varying resonance conditions of intake systems 1, 2, 3, 4 and 5.

2. 发明专利

JPH11257106A THROTTLE BODY FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH11257106A
公开(公告)日：1999-09-21
申请号：JP7326198
申请日：1998-03-06
申请人： NIPPON SOKEN , TOYOTA MOTOR CORP
发明人： TANIMOTO KOICHI , OHARA YASUSHI , KOHAMA TOKIO , KAMINAGA KOICHI , TAKADA MITSURU , II AKIRA
IPC分类号： F02D9/10
摘要： PROBLEM TO BE SOLVED: To reduce the flow rate of an intake air to the throttle valve opening of a throttle body when its opening is set to a low level, and obtain the sufficient flow rate of the intake air when its opening is set to a high level. SOLUTION: A throttle bore 3 is at upstream side of a throttle valve 4 formed as a diameter contracting part 31, and is at downstream side formed as an diameter enlarging part 33. The gradient angle θ1 of the diameter contracting part 31 is set at 3-10 degrees, and the gradient angle θ2 of the diameter enlarging part 33 is set at 2-8 degrees. Thereby, the flow rate of the intake air is set to a low level by the peeling action of air flow when the opening of the throttle valve 4 is set to a low level, and the flow rate of the intake air is sufficiently obtained by diffuser action and the like of the diameter enlarging part 33 when the opening is set to a high level.

3. 发明专利

JPH04145341A METHOD AND APPARATUS FOR MEASURING DIFFRACTION EFFICIENCY OF HOLOGRAM 失效
公开(公告)号：JPH04145341A
公开(公告)日：1992-05-19
申请号：JP26869490
申请日：1990-10-05
申请人： NIPPON SOKEN , NIPPON DENSO CO
发明人： TANIMOTO KOICHI , ISHIZUKA ATSURO , HASHIKAWA ATSUSHI , KOIKE YASUHIKO
IPC分类号： G01M11/00 , G02F1/21
摘要： PURPOSE:To measure diffraction efficiency over the whole hologram by obtaining diffraction efficiency on the basis of the intensity of permeable light, intensity of light incident on the hologram, intensity of light incident on a specified position and intensity of noise light. CONSTITUTION:A laser beam having a preset wave length is irradiated to the whole hologram having interference fringes recorded thereon to measure the intensity I0 of light permeating straight through the hologram, intensity I1 of the laser beam incident on the hologram, intensity IiA of the laser beam incident on a specified position of the hologram and intensity InA of noise light on the specified position of the hologram. The diffraction efficiency eta of the hologram is obtained on the basis of these four intensity according the following formula: eta = (1 - I0/Ii - I - InA/IiA) X 100%.

4. 发明专利

JPH03240182A OPTICAL READER 失效
公开(公告)号：JPH03240182A
公开(公告)日：1991-10-25
申请号：JP3691790
申请日：1990-02-16
申请人： NIPPON SOKEN , NIPPON DENSO CO
发明人： HASHIKAWA ATSUSHI , TAGUCHI MASAHIRO , TANIMOTO KOICHI , SAKAI YASUYUKI
IPC分类号： G06K7/12
摘要： PURPOSE:To compensate a difference in the intensity of reflected light by forming a hologram which diffracts and deflects the reflected light from an object toward a photodetecting means so that the hologram has diffraction efficiency set high or low according to focal length and/or photodetection area set large or small according to focal length. CONSTITUTION:Laser light which is generated by a laser light source 201 is diffracted and deflected by the holorgams 205a and 205b of a scanning means and focused to specific focal length and when the light strikes on the object, its reflected light is diffracted and deflected again by the holograms 205a and 205b of the scanning means and guided to the photodetecting means 210. Then the short-focus hologram 205a is formed in a belt like shape on a hologram disk 205 and the long-focus hologram 205b, on the other hand, is formed over the entire semicircular part of the hologram disk 205. Consequently, the diffrac tion efficiency eta of the holograms 205a and 205b is set high or low in advance according to the focal length of the holograms and the photodetection area S of the holograms is set large or small according to the focal length of the holorguns 205a and 205b. Consequently, variation in the quantity of photodetection due to a difference in distance can be suppressed.

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