cvt•hybrid 2007 yokohama · torque transmission characteristics of a power-split half-toroidal...

CVT•HYBRID 2007 Yokohama

September 12 -14, 2007

Congress Venue: Hamagin Hall “VIA MARE” Yokohama, JAPAN

International Congress on Continuously Variable and Hybrid Transmissions

Final Program

Contents

Sponsorship and Committee ---------------------------------------------------Welcome message and Overview ---------------------------------------------Timetable -------------------------------------------------------------------------Program---------------------------------------------------------------------------General Information and Social Program ------------------------------------Registration and Accommodation --------------------------------------------Access-----------------------------------------------------------------------------Floor Map ------------------------------------------------------------------------

1234 – 6 78910

Sponsorship and Committee Sponsors Sponsored by: Society of Automotive Engineers of Japan, Inc. (JSAE)

10-2 Gobancho, Chiyoda-ku, Tokyo 102-0076, Japan

Tel. +81-3-3262-8216 Fax. +81-3-3261-2204

Organized by: CVT-HYBRID 2007 Yokohama Organizing Committee

Patronized by: FISITA（International Federation of Automotive Engineering Societies）

Supported by: City of Yokohama

Electro – Mechanic Technology Advancing Foundation

In association with: The Japan Society of Mechanical Engineers

The Japan Fluid Power System Society Committee Members Chairperson: Yasukazu Sato, D.Eng Yokohama National University Committee Members: Tohru Ide, D.Eng FUKUJUKOGYO CO., LTD. Yorinori Kumagai Honda R&D Co., Ltd. Masami Sugaya TOYOTA MOTOR CORPORATION Tohru Takeuchi JATCO Ltd Hirohisa Tanaka, Prof., D.Eng Yokohama National University Kunihiko Morikawa, D.Eng Nissan Motor Co., Ltd. Keiji Sato Fuji Heavy Industries Ltd.

“The Society of Automotive Engineers of Japan, Inc. (JSAE) was founded on February 1, 1947. Its aims, as stipulated in Article 4 of its articles of incorporation, are to “promote scientific culture, expand the industrial economy, and improve the quality of people’s lives by furthering the development of automobile science and technology.” In June 1947, JSAE was sanctioned as a corporation by the Ministry of Education, Culture, Sports, Science and Technology, the Ministry of Economy, Trade and Industry and the Ministry of Land,

Infrastructure and Transport. In 1981, it became a member of the Japan Federation of Engineering Societies and was registered with the Science Council of Japan as an academic research organization three years later. When JSAE was first established, its members numbered only 1,500. Today, with the growth of Japan’s automobile industry, membership has swelled to close to 41,000 members and JSAE is recognized as a leading scientific organization in Japan. JSAE has been developing positive activities in Japan through the “Science Council of Japan” and the Japan Federation of Engineering Societies (JFES), as well as overseas through active membership in the International Federation of Automotive Engineering Societies (FISITA) and participation in the International Pacific Conference on Automotive Engineering (IPC).”

“FISITA is an independent world body representing over 144,000 automotive engineers belonging to national automotive societies in 38 countries. FISITA was founded in 1948 to provide a global forum for the exchange of technical knowledge on every aspect of vehicle design and manufacture. FISITA brings together engineers and decision-makers from industry, academia and government to work towards the

improvement of transportation systems, the conservation of energy and the protection of the environment. www.fisita.com”

http://www.fisita.com/

2

Welcome message and OverviewWelcome Message

On behalf of the organizing committee, it is our pleasure to welcome you to CVT-HYBRID 2007 Yokohama, the International Congress on Continuously Variable and Hybrid Transmissions. This bi- or triennial congress is recognized as one of the major series of congresses in CVTs and hybrid transmissions. The congress aims to be a high quality congress that provides opportunities for academics and industrial professionals worldwide to exchange their knowledge of the state-of-the-art CVT and hybrid transmission technologies and applications. We do hope that this congress will be highly successful and fruitful for all participants. Please join us this September, and enjoy the congress and a pleasant stay in the international port city of Yokohama.

Yasukazu Sato, Dr. Eng., Associate Professor, Yokohama National University Congress Chair, CVT-HYBRID 2007 Yokohama

Overview

The Society of Automotive Engineers of Japan (JSAE) hosted "CVT '96 Yokohama," in 1996. The congress was reconvened in the following years in the Netherlands (1999), Germany (2002), and the USA (2004). New aspects of hybrid technologies have emerged as congress topics of discussion since 1999. In 2007, the congress returns once more to Yokohama. During the last decade, certain CVT technologies have matured, while new CVT�HYBRID technologies have emerged. In seeking to achieve an encompassing view of such interesting and pressing topics, the congress emphasizes organized sessions featuring distinguished speakers from leading corporations, institutions, and universities worldwide active in the field of CVT�HYBRID. More than 40 papers will be presented on all areas of basic and applied science and technology related to CVT components and CVT & HYBRID systems.

Venue

Hamagin Hall “VIA MARE”* 3-1-1 Minatomirai, Nishi-ku, Yokohama, Kanagawa 220-8611 JAPAN http://www.yokohama-viamare.or.jp/

* The organizing committee of CVT-HYBRID 2007 Yokohama announced in Call for Papers that the congress venue would be the Education and Culture Hall in Yokohama National University. After that, the committee decided to change the venue from YokohamaNational University to Hamagin Hall “VIA MARE”, taking all circumstances into consideration. Hamagin Hall “VIA MARE” meets everyrequirement for an international congress. We are convinced that its good accessibility and convenient location will create a pleasurable environment for all participants.

9:00 Registration 9:00 Registration 9:00 Registration

9:30 9:30

10:00 OpeningOpening Address (JSAE)Opening Address (FISITA)Opening Address (CVT-HYBRID2007) 10:10 10:10

10:20 Break10:30 10:30 10:30

11:30 11:30 11:30

11:45 11:45 11:45

12:45 12:45 12:45Lunch Break Lunch Break Lunch Break

14:00 14:00 14:00

14:30 Break14:35

14:40

15:0015:15

15:20

15:35 15:35 Closing Address

16:1516:20

16:3016:35

17:15 17:10

18:00

20:00

* Technical Presentation: 20 minutes including 5 min. Q & A

CVT&HYBRID SYSTEMS- IVT, etc. II

Chair: Y.SATO

14:55

FUNDAMENTAL -TRACTION DRIVE

Chair: M. YAMANAKA

Keynote Speech

Coffee Break & Exhibition

FUNDAMENTAL - BELTCVT & CHAIN CVT III

Chair: F. SORGE

Break

CVT COMPONENTS -BELT CVT IIChair: H. KIM

Break & Exhibition

CVT COMPONENTS -TRACTION DRIVE II

Chair: T. TAKEUCHI

CVT COMPONENTS -TRACTION DRIVE I

Chair: T. IMANISHI


FUNDAMENTAL -FLUID I (Traction)

Chair: H. TANAKA


Break & Exhibition

FUNDAMENTAL - BELTCVT & CHAIN CVT II

Chair: T. FUJII

CVT COMPONENTS -BELT CVT I

Chair: N.D. VAUGHAN


FUNDAMENTAL - BELTCVT & CHAIN CVT I

Chair: B. VEENHUIZEN

FUNDAMENTAL -MATERIALS

Chair: B. VEENHUIZEN


Break & Exhibition Break & Exhibition

CVT&HYBRID SYSTEMS- IVT, etc I

Chair: H. KOGA

BANQUETVenue: Nissan Yokohama Club

Timetable

Sep. 12 (Wed.) Sep. 13 (Thurs.) Sep. 14 (Fri.)

CVT COMPONENTS -CHAIN CVT

Chair: T. IDE

FUNDAMENTAL -FLUID II (Belt, etc.)

Chair: T. MIYAJI

CVT&HYBRID SYSTEMS- HEV I

Chair: B.R. HÖHN

CVT&HYBRID SYSTEMS- HEV II

Chair: Y. SATO

Sep. 12 (Wed.)

Opening Speech 10:00-10:20

Opening Address (JSAE)Opening Address (FISITA)Opening Address (CVT-HYBRID2007)

10:20-10:30 Break

FUNDAMENTAL BELT CVT & CHAIN CVT I Chairman: Bram VEENHUIZEN (Technical University of Eindhoven) 10:30-11:30

101Francesco SORGE (University of Palermo)

102Andrzej BIENIEK, Jerzy JANTOS (OPOLE University of Technology)

103Toshihiro SAITO (Honda R&D Co., Ltd.)

11:30-11:45 Coffee Break & Exhibition

FUNDAMENTAL BELT CVT & CHAIN CVT II Chairman: Tohru FUJII (Doshisha University) 11:45-12:45

105Gerhard POLL, Carsten MEYER (University of Hanover)

106 The CMM Model of Belt-CVT DynamicsGiuseppe CARBONE, Luigi MANGIALARDI, Leonardo DE NOVELLIS (Politecnico di Bari),Bram VEENHUIZEN (Eindhoven University of Technology)

*104

12:45-14:00 Lunch Break

COMPONENTS BELT CVT I Chairman: N. D. VAUGHAN (Cranfield University) 14:00-15:00

107 Non-Linear Control of a CVT with Servo-Pump Actuators

108 Experimental Investigation of Macro-Slip in a Pushbelt CVT Variator

109 Performance Analysis of CVT Clutch System for Hybrid Electric Vehicle


COMPONENTS TRACTION DRIVE I Chairman: Takashi IMANISHI (NSK Ltd.) 15:20-16:20

110

111

112Chris GREENWOOD (Torotrak (Development) Ltd.)

16:20-16:35 Break & Exhibition

FUNDAMENTAL - FLUID I (Traction) Chairman: Hirohisa TANAKA (Yokohama National University) 16:35-17:15

113 Advanced Traction CVT Fluid for Innovating Transmission Technology

114 Development of Traction Fluids for a Range of ApplicationsStephen P. EVANS (Shell Research Limited), Adrian LEE (Torotrak (Development) Limited)

Cancelled

Losses in Continuously Variable Transmissions (CVT) due to Sliding Motion and Ratio Change

Program

Shift Mechanics of Metal Belt CVT

Applying of Frictional Conditions Estimation at Thrust Force Control in Continuously Variable Transmission

Simulation of Stress on Elements of CVT Metal Pushing V-belt under Transient Operating Condition

Yves ROTHENBUEHLER (JTEKT CORPORATION), Jacques VAN ROOIJ, Joost NELISSEN (GCI B.V.)

Stan VAN DER MEULEN, Bram DE JAGER, Bram VEENHUIZEN, Maarten STEINBUCH (Eindhoven University ofTechnology), Erik VAN DER NOLL, Francis VAN DER SLUIS (Van Doorne’s Transmissie - Bosch Group)

Wansik RYU (HYUNDAI POWERTECH), Namyong CHO (NGV), Inpil YOO (HYUNDAI MOTOR Co. Ltd),Hanlim SONG (ANSAN College of Technology), Hyunsoo KIM (SUNGKYUNKWAN University)

Development of Traction Drive IDG(T-IDG®)Tatsuhiko GOI (Kawasaki Heavy Industries, Ltd.), Hirohisa TANAKA (Yokohama National University)Latest Developments in Modelling and Optimisation of the Milner CVTSam AKEHURST, Adrian HUNT (University of Bath),Stuart SCHAAF (Intersyn Technologies & Terravici Drilling Solutions)Epicycloidal Roller Control (ERC) -Its Impact upon Variator Capability-

Tomomi MIYAJI, Yoshitaka TAMOTO, Hidetoshi KOGA, Hitoshi HATA (Idemitsu Kosan Co., Ltd.)

Sep. 13 (Thurs.)

FUNDAMENTAL MATERIALS Chairman: Bram VEENHUIZEN (Technical University of Eindhoven) 9:30-10:10

201 Improving Fatigue Strength of Maraging Steel for CVT Belt

202 Application of Quenching Simulation for CVT PulleyKoichi TANIGUCHI, Shunzo UMEGAKI, Kanji UENO (JATCO Co.Ltd.)


FUNDAMENTAL FLUID II (Belt, etc.) Chairman: Tomomi MIYAJI (Idemitsu Kosan Co., Ltd.) 10:30-11:30

203 Trends of Metal Pushing V-Belt CVT FluidTakehisa SATO (TonenGeneral Sekiyu K.K)

204 Lubricating Today’s CVTs with Tailor-made Solutions

205Osamu KUROSAWA, Hisayuki WADA, Yoshimu IWANAMI (Nippon Oil Corporation),Masaharu NOMURA (High Energy Accelerator Research Organization)


COMPONENTS TRACTION DRIVE II Chairman: Tohru TAKEUCHI (JATCO Ltd) 11:45-12:45

206

207Yukihito NARITA, Masashi YAMANAKA, Katsumi INOUE (Tohoku University)

208 Torotrak Toroidal Traction Drive Continuously Variable Transmission (T-CVT) for Kei CarsDave BURTT, Mike HOUGH (TOROTRAK (Development) Ltd.)

12:45-14:00 Luch Break

KEYNOTE SPEECH Chairman: Yasukazu SATO (Yokohama National University) 14:00-14:30

209 A Future Perspective for Continuously Variable Transmissions

14:30-14:35 Break

FUNDAMENTAL BELT CVT & CHAIN CVT III Chairman: Francesco SORGE (University of Palermo) 14:35-15:15

210

211


COMPONENTS BELT CVT II Chairman: Hyunsoo KIM (Sungkyunkwan University) 15:35-16:15

212

213 Progress in CVT Development at ToyotaKenichi YAMAGUCHI, Hideki YASUE, Hiroki KONDO (Toyota Motor Corporation)


FUNDAMENTAL TRACTION DRIVE Chairman: Masashi YAMANAKA (Tohoku University) 16:30-17:10

214 Analysis of Traction Properties of Fluids using Molecular Dynamics Simulations

215 Improvements of Half Toroidal CVTHiroki NISHII, Sachiko NOJI, Tomohiro INOUE (NSK Ltd.)

18:00-20:00 Banquet

Thorsten DAVID, Simon CRANSON, Chris WARRENS (BP, Global Lubricants Technology),Andreas WESTA, Peter KRANEBURG (Castrol Lubricants Europe)XANES Study on Boundary Lubrication Films Generated from Belt-Drive Continuously Variable Transmission Fluids

Takehiro OHNO, Hidehiko WAKAKUWA, Hidemi TAKAO, Atsushi KUMAGAI, Katsuhiko OHISHI,Toshihiro UEHARA (Hitachi Metals, Ltd.)

H. WASHIZU, S. SANDA, S. HYODO, T. OHMORI (Toyota Central R&D Labs., Inc.),N. NISHINO, A. SUZUKI (Toyota Motor Corporation)

Torque Transmission Characteristics of a Power-Split Half-Toroidal CVT BoxHirohisa TANAKA, Nozomi TOYODA, Naohiro KANEKO, Takashi IMANISHI,Yasukazu SATO (Yokohama National University)Improvement of Power to Weight Ratio of Shaft Drive CVT

N. D. VAUGHAN　 (Cranfield University, FISITA Vice President - Technical)

Study on Belt Slip Behavior in Metal V-belt Type CVTKyohei SAKAGAMI, Toru FUJII (Doshisha University), Hideaki YOSHIDA, Toru YAGASAKI (Honda R&D Co.,Ltd.)A Study on the Behavior of a Metal V-belt for CVTsHirofumi TANI, Hiroyuki YAMAGUCHI, Haruhiro HATTORI (Toyota Central R&D Labs., Inc.),Masanori SHIMIZU, Kazuya ARAKAWA, Yuji HATTORI (Toyota Motor Corporation)

CS-PTO2: A Second Generation Constant Speed Power Take Off CVT for Driving High-Power Auxiliaries inDistribution TrucksBart JANSSEN, Bas VROEMEN, Roell VAN DRUTEN (DTI – ADVANCED TECHNOLOGIES),Bram VEENHUIZEN (Eindhoven Technical University), Daan DE CLOE (Govers ET BV)

Sep. 14 (Fri.)

CVT COMPONENTS CHAIN CVT Chairman: Tohru IDE (FUKUJUKOGYO CO., LTD.) 9:30-10:10

301

302 High Performance CVT Components by LuK - A Key Factor for Improved Fuel Efficiency -


CVT&HYBRID SYSTEMS - HEV I Chairman: Bernd-Robert Höhn (Technical University Munich) 10:30-11:30

303Shoji OTA, Takahiro EGUCHI (Honda R&D Co.Ltd.)

304Shoichi SASAKI (Toyota Motor Corporation)

305 Experimental Validation of a CVT with IS2 Module


CVT&HYBRID SYSTEMS - HEV II Chairman: Yasukazu SATO (Yokohama National University) 11:45-12:45

306 Characteristics of a Coaxial Motor Driven by Compound Current

307Kazuyoshi HIRAIWA (Kyowa Metal Works Co, Ltd.)

308 Analysis of Energy Flow in Optimised CVT-Hybrid-Powertrain

12:45-14:00 Lunch Break

CVT&HYBRID SYSTEMS - IVT, etc I Chairman: Hidetaka KOGA (Isuzu Motors Ltd.) 14:00-14:40

309

310Dierk REITZ, Uwe WAGNER, Reinhard BERGER (LuK GmbH & Co. oHG)

14:40-14:55 Break

CVT&HYBRID SYSTEMS - IVT, etc. II Chairman: Yasukazu SATO (Yokohama National University) 14:55-15:35

311 Low Cost IVT for the Off-Highway MarketJohn FULLER, Brian DONOHOE, Phil WINTER (TOROTRAK (Development) Ltd.)

312Robert FUCHS, Tsutomu TAMURA (JTEKT Corporation)

15:35-15:45 Closing Address

The GCI High Torque CVT Chain for Torques up to 2500 Nm

Bas VROEMEN, Roëll VAN DRUTEN, Alex SERRARENS (DRIVETRAIN INNOVATIONS b.v. ),Luc RÖMERS (TECHNISCHE UNIVERSITEIT EINDHOVEN)

Minoru ARIMITSU, Yuji NARUSE, Yuusuke MINAGAWA, Masaki NAKANO, Takashi INOUE (Nissan Motor Co., ltd.)Potential Performance of Mechanical-Electric CVT - Application for Drive-Train of Hybrid Vehicle-

Bernd-Robert HÖHN, Dierk SCHRÖDER, Claus LECHNER, Jens SCHLURMANN (Technical University Munich)

Jacques VAN ROOIJ, Gijs COMMISSARIS, Koen VAN DE MEERAKKER, Joost NELISSEN (Gear Chain Industrial B.V.)

André LINNENBRÜGGER, Andreas ENGLISCH, Andreas GÖTZ, Emmanuel SIMON,André TEUBERT (LuK GmbH & Co. oHG), Martin VORNEHM (LuK USA LLC)

Development of CIVIC Hybrid CVT System

Power Sprit Type Hybrid System

Performance of the Half-Toroidal IVT System for Vehicles with Large Engine DisplacementTakashi IMANISHI, Takumi SHINOJIMA, Toshiro TOYODA, Eiji INOUE (NSK Ltd.),Hirohisa TANAKA (Yokohama National University)Hybrid Architectures for Automated Transmission Systems - Add-on and Integrated Solutions -

Open-Loop Performance Analysis of a Torque Controlled Full Toroidal Variator

General Information

Period: September 12 (Wed.) – 14 (Fri.), 2007 Venue: Hamagin Hall “VIA MARE”

3-1-1 Minatomirai, Nishi-ku, Yokohama, Kanagawa 220-8611 JAPAN http://www.yokohama-viamare.or.jp/

Secretariat: CVT･HYBRID 2007 Yokohama Secretariat SOTETSU AGENCY, Inc., Convention Division

YCS 5F, 5-1, Sakae-cho, Kanagawa-ku Yokohama 221-0052 Japan Tel. +81-45-450-1831, Fax. +81-45-441-8444 E-mail: [email protected]

Registration: Please refer to page 8 for information, and go to the JSAE website to make pre-registration.

Language: The official language of the congress is English.

Passports and Visas: All foreign nationals require a valid passport to enter Japan. Visa requirements, however, differ from country to country. Please check with your local Japanese Embassy or Consulate for information well in advance of departing for Japan to allow enough time for visa application and processing.

Technical Papers: Papers presented at the CVT-HYBRID 2007 Yokohama will be printed as congress

proceedings. All registered attendees will receive proceedings at the venue. Weather: Please refer to the following website of the Yokohama City.

http://www.welcome.city.yokohama.jp/eng/tourism/mame/a2000.html

Social Program

Banquet: Date & Time: September 13, Thursday, 2007 18:00-20:00

Venue: Nissan Yokohama Club

(Nissan Yokohama Bldg. 21F, 2-6-32, Takashima, Nishi-ku, Yokohama)

Fee: Included in registration fee.

*Complimentary shuttle service will be offered from Congress venue to Banquet venue.

http://www.yokohama-viamare.or.jp/

mailto:[email protected]

http://www.welcome.city.yokohama.jp/eng/tourism/mame/a2000.html

8

Registration and AccommodationRegistration

Registration Fees:

Category On/before June 30, 2007* On/After July 1, 2007*

Presenter JPY 30,000 Early registration only

Delegate JPY 40,000 JPY 50,000

*Based on Japan standard time.

Your registration fee covers 1. CVT-HYBRID 2007 Yokohama Proceedings (printed version) 2. Participation in Technical Session and Exhibition 3. Social Programs (Banquet, etc.)

Pre-registration: Please register on-line at the Website: http://www.jsae.or.jp/event_01e.php

On-site registration: On-site registration is available at the registration desk.

Payment: Credit card only. We accept Visa, Master, Amex, JCB and Diners.

For Domestic Participants:��

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Confirmation: Confirmation sheet of your registration will be mailed automatically after your on-line registration has been completed. Please bring this confirmation sheet with you to the registration desk.

Cancellation Clause: Cancellation requests must be in writing and mailed or faxed to: CVT-HYBRID 2007 Yokohama Secretariat

Charges: On/Before June 30, 2007 50% of registration fees On/After July 1, 2007 100% of registration fees

Refunds: Refunds minus cancellation and handling charges will be processed after the closing of the Congress.

Accommodation

The Congress Secretariat is not prepared to arrange accommodation for the Participants. Participants are requested to arrange hotel reservations themselves if required. Please see the Yokohama Accommodation Guide for reference.

http://www.welcome.city.yokohama.jp/eng/tourism/hotel/06.html#04

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Access

Traffic Information From Narita Airport

By Train: 90 min. on the JR Narita Express to JR Yokohama Sta.By Bus: 90 min. on the Airport Limousine Bus to YCAT (Yokohama City Air Terminal,Yokohama Sta. east)

From Haneda AirportBy Train: 20 min. on the Keihinkyuko line Express to JR Yokohama Sta.By Bus: 30 min. on the Airport Limousine Bus to YCAT (Yokohama City Air Terminal,Yokohama Sta. east)

From Tokyo StationBy Train: 30-45 min. on JR Tokaido, JR Yokosuka, and JR Keihin Tohoku lines to JR Yokohama Sta.

Getting to Hamagin Hall “VIA MARE”, from the JR Yokohama Sta.3 min. on the JR Keihin Tohoku Line to the Sakuragicho Sta. Then, 5 min. on foot from Sakuragicho Sta. to Hamagin Hall Via Mare.

Getting to Hamagin Hall “VIA MARE”, from the YCAT (Yokohama City Air Terminal,Yokohama Sta. east)By Taxi: 5 min. from YCAT to Hamagin Hall Via MareBy Train: 3 min. on the JR Keihin Tohoku Line from JR Yokohama Sta. to Sakuragicho Sta

5 min. on foot from Sakuragicho Sta. to Hamagin Hall Via Mare.

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Floor Map

Hamagin Hall “VIA MARE”, 1F

Exhibition1. Schaeffler Group Automotive 6. Bosch Corporation2. AISIN AW CO., LTD. 7. Gear Chain Industrial B.V.3. JATCO Ltd. 8. NSK Ltd.4. Honda Motor Co., Ltd. 9. Torotrak (Development) Ltd.5. Orbital Traction / InterSyn Technologies

1

2

3

4

5

6

7

8

9

Stage

Registration Desk

ExhibitionHall

Lounge

Entrance

www.aisin-aw.co.jp

Innovative Bosch

Ultimate driving comfort, maximum power, continuous smooth acceleration, more driv-

ing fun and, last but not least, increased fuel economy are fundamental requirements of

modern traffic. They can all be achieved by means of one unique innovative technology:

CVT or Continuously Variable Transmission.

Ultimate comfort in increasing traffic.

Contributing to a sustainable future.

The CVT working principle

With the rapid growth of car ownership in the past, automatic transmissions have become

an indispensable technology. Already a lot of drivers use this technology to make driving

more comfortable and less stressful in stop-and-go traffic and traffic jams. CVT, currently

deployed in over 10 million cars worldwide, enhances driving comfort even further.

By optimizing the utilization of engine power, CVT can increase fuel efficiency by up

to 10-15% compared to other automatic transmissions and, consequently, significant-

ly reduce emissions. This makes CVT the ideal system for the future of the auto-

motive industry.

A CVT consists of an electronically controlled and oil-pressure supported variator.

The variator consists of a set of pulleys (primary and secondary) and a high alloy

steel pushbelt. The pushbelt is the heart of the CVT and forms the indispensable link

between the vehicle’s engine and the driving wheels. The engine’s power is trans-

ferred from the primary pulley to the secondary pulley by pushing the CVT push-

belt. By changing the width of the pulleys, an ininite number of ratios can be

established. The Bosch CVT pushbelt is available for all power classes.

For Smooth Acceleration into a Stepless Future.

Invented by Bosch, the No. 1 in patent applications in automotive technology.More than any other supplier, Bosch has played a role in shaping progress in auto-

motive technology. With its dedication to long-term strategic partnerships and

expertise in training programs for local customers, Bosch will actively help to

promote the development of CVT. For further information, please inquire at:

Continuously Variable Transmission

Bosch Corporation

3-6-7, Shibuya, Shibuya-ku,

Tokyo 150-8360 Japan

Tel 03-5485-4183

http://www.cvt.bosch.com

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