Compact Continuously Variable Valve Lift CVVL Delphi Compact

Compact Continuously Variable Valve Lift �凑型��可�气�升 程技� (CVVL)

Delphi Compact CVVL 德尔福�凑型 CVVL Why CVVL �什么����可�升程 u ¿ u Rising fuel prices and environmental awareness creating greater demand for fuel efficient vehicles 油价的上�、�保意�的 提高增加了人��燃油��型高的��的需求 Government CAFE and CO 2 regulations require OEM’s to consider new technologies that improve fuel economy while maintaining vehicle performance 政府要求整�厂在保持��性能不�的情况下提高燃油��型并降低排 放 Several OEM’s have successfully introduced continuously variable valve lift systems 以下几家整�厂已成功地采 用了� �可�气�升 程技� – – BMW – Valvetronic electro mechanical CVVL Toyota – Valvematic electro mechanical CVVL Nissan – VVEL electro mechanical CVVL FIAT – Multi. Air electro hydraulic CVVL

Delphi Compact CVVL 德尔福�凑型 CVVL Why CVVL � 什么� �� �可�升程 u Fuel economy benefit 提高燃油��性 – – u Operating at higher manifold pressures (open throttle) to reduce pumping work Early Intake Valve Closing to further reduce pumping work Reduced valve train drive torque at low valve lift Improved thermal efficiency due to lower temperature combustion and reduced heat transfer Low speed torque 低速扭矩提高 8% – Up to 8% improvement u Reduced emissions 降低排放 – Up to 60% reduction in NOx – CVVL with 60° cam phaser 减少 60%Nox – CVVL + 600凸�相位器 – Up to 10% reduction in HC Low speed torque 低扭局�减少 10%HC

Delphi Compact CVVL Experience 近二十年丰富的�� • Delphi has been developing continuously variable valve lift mechanisms since 1996. LPVT Laboratory Programmable Valvetrain 1996 -2004 SSCR VLC Single Shaft Crank Rocker Valve Load Control 1999 -2000 -2001 » Study various VVA load control » Tested on firing engine dyno strategies » Developed EMS and » define VVA system requirementsdemonstration vehicle » Study VVA cold-start strategies » Fuel economy, low speed torque and emission benefits examined Valtec 2002 -2003 » Built and tested 6 cylinder heads » Built a hand cranking device for single cylinder control » Exploratory dyno program » Better inherent phasing verified fuel economy and emission characteristics potentials CVVL Continuously Variable Valve Lift 2006 -2009 » Built single and multi cylinder fixtures » Improved friction, durability, and high speed dynamics

Delphi Compact Continuously Variable Valve Lift Design Overview 具有低成本易�用等�越性 • CVVL offers greatest combination of valve event flexibility, cost, and ease of application • CVVL design is focused on low cost and compact packaging while meeting fuel economy driven target lift profiles

Delphi Compact Continuously Variable Valve Lift Design Overview ��概述 • Compact CVVL uses cam driven, shaft mounted oscillating input follower per cylinder Input Follower Cam

Delphi Compact Continuously Variable Valve Lift Design Overview � �概述 • Input follower drives oscillating output follower through pallet interface Input Follower Pallet Output Follower

Delphi Compact Continuously Variable Valve Lift Design Overview � �概述 • Output follower oscillation operates 2 valves through conventional hydraulically lashed roller finger followers Output Follower Roller Finger Follower Hydraulic Lash Adjuster

Delphi Compact Continuously Variable Valve Lift Design 成本低、����、可靠性高 Delphi Philosophy Simple Design Low Cost Reliable • Compact CVVL mechanism fully contained on single shaft assembly with drive gear

Delphi Compact Continuously Variable Valve Lift Development Hardware Durability 耐久性强 • Successfully completed limited durability testing § § 200 hour test • Speed – 600 – 6600 e. RPM • Lift full above 4800 e. RPM • 1. 0 – 10. 5 mm 600 – 4800 e. RPM • Oil temp 90° C No destructive wear or performance degradation noted on any critical surfaces [ORC pallet shown as example] ORC PALLET SURFACE

Licensing Considerations 技���注意事� • Competency Requirements of Target Licensee or Target’s Supplier Base : § Heat treatment knowledge and practice: roller bearing surfaces and eccentric shaft § Surface finishing (grinding): roller bearing surfaces eccentric shaft § Line Machining/ Boring: support centers, input follower and output rocker cam. § Metallurgical Analysis of ferrous and non-ferrous metals § • Tribology, fatigue and critical dimension measurement of small parts End of line testing for electromechanical assembly § • Servo motor for sector gear assumed part of finished assembly • Critical to ensure FTQ • May not be competency with cylinder head manufacturers

Licensing : Technical Support 技�支持 • • Software: § Algorithms for eccentric shaft motor control § Calibration development § Test stand / engine dynamometer control architecture DFMEA and PFMEA development § • • Confirm what has been established and asses what needs to be completed prior to the any deal Engine Application Criteria § Establish application guidelines. § Not all engines will be suitable for applications of CCVL ex: engine displacement, configuration (“V” versus “Inline”), rpm profile, diesel Engine testing and validation program § Consultation in this area will be expected