Sunday, July 24, 2016

doc F00956-ATX-12884994 Many engineers trying to diagnose inrush current causes voltage drop, vehicle behavior

This is Koji Kato of 11G.

In regard to NV [Noise and Vibration],
at the moment there is no function change for the function of concern. In the future, I will ask about the 250L status and check it carefully.

Atsushi Nomura wrote:

>This is Nomura of ZJ.
>
> As Mr.Takagi has stated below,
in regard to performance changes that are being confirmed now regarding NV (idle vibration is okay, right?) as well as 200L functional stability/driveability, please let us now the concrete details and occurrence conditions.
>
>
Yesterday I asked ST Takagi of 1ET about the situation with each vehicle. He indicated the
> 200L (180L) must also be handled with quite a bit of concern.
 >
> For example,
it seems we had better deal first and frankly with phenomena that have causes that are not well understood, such as the loss of steering power when the engine is at high RPMs (the cause is unknown, but still...).
>
>
Strange phenomenon may also happen when an inrush current causes a voltage drop at a time when the engine has a large load (A/C ON & PS ON, etc.).
Actually,
abnormal phenomena also seem to be happening in the 250L during sudden steering (EPS) and when the ABS operates. Additionally, the large variations of electrical load in the new 250L V8s seem to be causing problems of large idling vibrations.
>
> As I’ve requested, please borrow a 180L electronic AS vehiclefull specand urgently confirm whether or not any unexpected phenomena are present. Recently, such unexpected phenomena have also appeared in the 120L, 130L and 045L, which have only a small amount of equipment, which worries me.
>
Regards
> --
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> *************************************************************
> Atsushi Nomura
> Assistant Chief Engineer
> ZJ2, PRODUCT PLANNING DIV., TOYOTA DEVELOPMENT CENTER 1
> PRODUCT DEVELOPMENT GROUP, TOYOTA MOTOR CORPORATION
> Phone:+81-565-72-2558 FAX:+81-565-72-2339
> mailto:nomura@giga.tec.toyota.co.jp
> *************************************************************
>
> ------------------------------------------------------------------------
>
> Subject: Proposed departments to include in group of departments related to handling  vehicle performance changes

> Date: Wed, 20 Jul 2005 09:49:28 +0900
> From: Masashi
Takagi<takagima@mail.tec.toyota.co.jp>
> To: nomura@giga.tec.toyota.co.jp
>
> Hello, this is Takagi from 1ET
.
>
> It depends on what we’ll do, but assuming we will decide the first step is dealing with software versions, the systems departments
within the C, E, V and H divisions that relate to motion  performance, as well as the PF group and communication group should be included, so in concrete terms wouldn’t they be as follows?

> ZJ2
 15G FK VLC 22H 42H 1CK 2CK 1SE SGE 1AV VK 4PH GH
>
> Secondly, I
think we must add light-related (AFS, etc.) and air conditioning related individuals in order to confirm power consumption issues.
>
> Still, what will we be confirming practically speaking in terms of the 200L?
We don’t understand the condition that well, so the phenomenon and the conditions of its occurrence should firstly be clarified by 15G.
> I realize it’s not possible to quantify the phenomenon, so
functional items are fine, but the conditions at the time are important.
>
>I have attached for
your reference a list of the individuals who were sent invitations to the meeting about the 215L.
>
>
#1 Toyota Centre ZJZJ1 Katsunori Makibayashi 2-2553 mailto:katunori@makibayashi.tec.toyota.co.jp
>
#1 Vehicle Function Development Division #1 Operation Function Development Dept. Vehicle Operation 2G Ken Mori  816-7611 mailto:ken@mori.tec.toyota.co.jp
>
#2 Vehicle Engineering Division Vehicle Control System Development Dept. Suspense Integration Control G Osamu Yasuike 816-7692 mailto:osamu@yasuike.tec.toyota.co.jp
>
#2 Vehicle Engineering Division Vehicle Control Systems Development Dept. Suspension Integration Control G Atsushi Mizuta 816-2711 mailto:mizuta@atsushi.tec.toyota.co.jp
>
#2 Vehicle Engineering Division Chassis Development Dept. Absorber Control Development G Hideki Ohashi 2-5638 mailto:hideki@ohashi.tec.toyota.co.jp
>
Vehicle Electronic Design Division #2 Vehicle Electronic Design Dept. #1G Keita Omi 2-3981 mailto:ohmik@nano.tec.toyota.co.jp
>
Lexus Chassis Design Division Lexus Control System Design Dept. VSC Control 3G Zensaku Murakami 2-2146 mailto:zensaku@murakami.tec.toyota.co.jp
>
#1 Vehicle Function Development Division Project Development Progress 1G Makoto Uno 2-3537 mailto:makoto@uno.tec.toyota.co.jp
>
#1 Electronics Engineering Division #1 2 Electronics Dept. Junzo Ooe 2-6209 mailto:ooe@junzo.tec.toyota.co.jp
>
#1 Vehicle Function Development Division Project Development Progress 1G Kazuo Asano 2-3538 mailto:kaz@asano.tec.toyota.co.jp
>
Lexus Chassis Design Division Lexus  Control System Design Dept. VSC Control 3G Hiroaki Yoshida 2-5207 mailto:hiroaki@yoshida.tec.toyota.co.jp
>
#2 Drive Train Engineering Division #3 AT Engineering Dept. #3 3G Hayata Kondo 2-8776 mailto:hayata@nano.tec.toyota.co.jp
>
Lexus  Vehicle Function Development Division #1 Lexus  Function Development Dept. Operation Control G Yuichi Toyoda 816-2420 mailto:yuichi@toyoda.tec.toyota.co.jp
>
Vehicle Electronic Design Division Vehicle Electronic Planning Dept. #5G Takashi Yanagisawa 2-3892 mailto:takashi@yanagisawa.tec.toyota.co.jp
>
#2 Vehicle Engineering Division Vehicle Control System Development Dept. Stair Integration Control G Kenji Shibata 816-2713 mailto:kenji@shibata.tec.toyota.co.jp
>Engine
Project Progress Division #65G Takanobu Noda 2-7568 mailto:takanobu@noda.tec.toyota.co.jp
>
Integration System Development Division #1 Development Dept. #2G Masashi Takagi 2-6538 mailto:takagima@mail.tec.toyota.co.jp
>
Participants (Attendance optional)
>
#2 Vehicle Engineering Division Chassis Development Dept. Absorber Control Development G Masaaki Tabata 2-5635 mailto:tabata@masa.tec.toyota.co.jp
>
#1 Vehicle Function Development Division #1 Operation Function Development Dept.  Ikutomo Sakai 816-7590 mailto:sakai@ikutomo.tec.toyota.co.jp
>
Vehicle Electronic Design Division #1 Vehicle Electronics Design Dept.  Tomoaki Katayama 2-4004 mailto:katayama@tomoaki.tec.toyota.co.jp
>
Vehicle Electronic Design Division #2 Vehicle Electronic Design Dept. #1G Masahiro Kando 2-3944 mailto:masa@kando.tec.toyota.co.jp
>
Vehicle Electronic Design Division Vehicle Electronic Planning Dept.#3G Hiroya Andoh 2-3897 mailto:hiroya@andoh.tec.toyota.co.jp
>
#1 Vehicle Function Development Division #1 Operation Function Development Dept. #5 2 Test Team lead Masahiro Matsumoto 816-7642 mailto:masahiro@matumoto.tec.toyota.co.jp
>
#2 Vehicle Engineering Division Vehicle Control System Development Dept. Stair Integration Control G Takahiro Kojo 816-2744 mailto:t.kojo@mail.tec.toyota.co.jp
>
#1 Vehicle Function Development Division #1 Operation Function Development Dept.  Takanori Ishizu 816-7601 mailto:ishizu@taka.tec.toyota.co.jp
>
Lexus Vehicle Function Development Division #1 Lexus Function Development Dept. Operation Control G Hideyuki Aizawa 816-7641 mailto:aizawa@hideyuki.tec.toyota.co.jp
>
Lexus  Chassis Design Division Lexus  Control System Design Dept.  Masayuki Soga 2-2140 mailto:masayuki@soga.tec.toyota.co.jp
>
#2 Drive Train Engineering Division #3 AT Engineering Dept. # 3 G Hiroyuki Ishii 2-8785 mailto:ishii@hiroyuki.tec.toyota.co.jp
>
#1 Vehicle Function Development Division #1 Merchantability Development Dept. Project Development Progress Test Team lead #2 Takanobu Fukuoka 2-3698 mailto:taka@fukuoka.tec.toyota.co.jp
>
#1 Vehicle Function Development Division #1 Merchantability Development Dept. Project Development Progress Test Team lead #2 Taro Yamada 2-3736 mailto:taro@yamada.tec.toyota.co.jp
>
#1 Vehicle EngineeringDivision Test Section #3 Test Team lead Mitsuhiro Kubota 816-7679 mailto:kubota@json.tec.toyota.co.jp
>Engine 
Project Progress Division #65 G Toshio Yoshidome 2-7565 mailto:tommy@yosidome.tec.toyota.co.jp
>
>
Regards

--
***********************
Toyota Motor Corporation
  #Vehicle Function Development Division #1 Vibration Noise Development Dept.
  Koji Kato
  E-Mail koji@kato.tec.toyota.co.jp   
  Tel.  0565-72-3573
  FAX   0565-72-3517  
***********************