Global Lightweight Vehicle Developments and Policy Design Implications - Nic Lutsey
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The document discusses global advancements in vehicle lightweighting technologies and their implications for policy and automaker strategies from 2015 to 2025. It highlights the drivers of lightweighting, such as consumer demand for performance and compliance with regulations, as well as recent automaker commitments to reduce vehicle weight. Furthermore, it outlines various lightweighting technologies and their potential impact on fuel efficiency and greenhouse gas emissions.
![Global passenger car fuel consumption standards
世界乘用车油耗标准
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U S 2025[2] : 4.4
C anada 2025: 4.4
M exico 2016: 6.5
E U 2021: 4.1
Japan 2020: 4.5
C hina 2020[1] : 5.0
S . K orea 2015: 6.3
India: 4.8
B razil 2017[3] : 6.3
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Liters per 100 K ilom eters (G asoline E quivalent)
norm alized to N E D C Test C ycle
U S
C anada
M exico
EU
Japan
C hina
S . K orea
India
B razil
S olid lines: historical perform ance
D ashed lines: enacted targets
D otted lines: proposed targets or targets under study
[1] China's target reflects gasoline vehicles only. The target may be higher after new energy vehicles are considered.
[2] The U.S. standards are fuel economy standards set by NHTSA, which is slightly different from GHG stadards due to A/C credits.
[3] Gasoline in Brazil contains 22% of ethanol (E22), all data in the chart have been converted to gasoline (E00) equivalent
[4] Supporting data can be found at: http://www.theicct.org/info-tools/global-passenger-vehicle-standards.
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aso lin e E q u ivalen t)
Test C ycle
U S
C anad a
M exico
E U
Jap an
C hina
S . K o rea
S o lid lin es: h isto rical p erfo rm an ce
D ash ed lin es: en acted targ ets
D o tted lin es: p ro p o sed targ ets o r targ ets u n d er stu d y
Supporting data and assumptions at
http://www.theicct.org/info-tools/global-passenger-vehicle-standards
Standards are driving efficiency technology innovation and deployment globally
油耗标准驱动着全球的高效汽车的技术创新与部署](https://image.slidesharecdn.com/day205-globallightweightvehicledevelopmentsandpolicydesignimplications-140825152327-phpapp02/85/Global-Lightweight-Vehicle-Developments-and-Policy-Design-Implications-Nic-Lutsey-16-320.jpg)
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Weight vs. footprint based vehicle standards
基于质量与基于脚印面积机动车标准的比较
vehicle weight [kg]
CO2 [g/km]
60% target line
-100 kg
-6 g/km
-100 kg
-6 g/km
Weight-based target system
60% target line
vehicle size [m2]
Footprint-based target system
If manufacturer applies weight reduction, most of the CO2-reduction effect is taken away due to more stringent CO2 target
Manufacturer fully benefits from the CO2-reduction effect of lightweighting
Weight-based standards reduce incentive to reduce weight
基于质量的标准体系大大降低了减重动力，并非技术中立](https://image.slidesharecdn.com/day205-globallightweightvehicledevelopmentsandpolicydesignimplications-140825152327-phpapp02/85/Global-Lightweight-Vehicle-Developments-and-Policy-Design-Implications-Nic-Lutsey-18-320.jpg)
Global Lightweight Vehicle Developments and Policy Design Implications - Nic Lutsey
- 1. Global lightweight vehicle developments and policy design implications 全球汽车轻量化技术的发展 以及政策制定的启示 Nic Lutsey June 5, 2014 GFEI/ICCT workshop Beijing, China
- 2. Presentation outline 演讲概要 Background Automaker lightweighting developments (today) Lightweighting technology potential (2015-2025) Policy implications 背景 机动车轻量化发展（当前） 轻量化技术潜力（2015-2025） 政策启示 2
- 3. 3 Basics on vehicle mass reduction 车辆减重／轻量化的基本信息 Primary drivers Consumer demand for acceleration performance, fuel savings, safety Automaker compliance with efficiency and climate regulations More cost-effective technology step before electric-drive Technology enablers Advances in materials, manufacturing techniques (steel, aluminum, plastics) Improvements in computer aided engineering (CAE) model optimization Inertial acceleration Rolling resistance Aerodynamic drag 主要驱动力 消费者对加速性能，节省燃料，安全的需求 汽车制造商遵守效率/气候规定 对电力传动的成本效益技术考虑 相关技术 先进的材料和生产技术（钢制品，铝，塑料） 计算机辅助工程的提高有助于模拟最优化设 计 惯性速度 滚动阻力 空气阻力 m m
- 4. Background: Vehicle Efficiency 技术背景：机动车效率 The modern car, at 15-20% efficiency, has many efficiency losses – and many efficiency opportunities 现代机动车效率大约为15-20%, 存在很多效率流失，同时也存在 很多提高效率的机会 4 Sources: Lutsey, 2012; Kromer and Heywood, 2007; U.S. EPA (http://www.fueleconomy.gov/feg/atv.shtml) Engine Aerodynamic drag Rolling resistance 100% 70-75% 1-3% 5-6% 3-8% Inertial acceleration 3-5% 3-9% Road ~15% Fuel 1-3% Accessories Idling Transmission 3-8% Braking CO2
- 5. Individual Technologies 5 Indirect benefits: powertrain downsizing and cost reduction Area Technology for CO2 reduction Technology share, MY2013 Potential CO2 reduction Powertrain Engine Low friction lubrication - 0.5% Engine friction reduction - 2-4% Variable valve timing/lift 98% 4-6% Cylinder deactivation 8% 5-6% Turbocharging 15% 2-5% Turbo, gasoline direct injection 31% 8-15% Cooled EGR, turbo, GDI - 20-25% Compression ignition diesel 1% 15-25% Digital valve actuation - 5-10% Transmission Early torque converter lock-up - 0.5% Optimized shifting - 2-6% 6+ speed 61% 2-8% Continuously variable 14% 8-11% Dual-clutch, automated manual - 9-13% Vehicle Aerodynamics - 2-5% Tire rolling resistance - 2-4% Accessories (steering, air cond., alternator) - 1-4% Lower refrigerant emissions (low-leak, low-GWP) - 2-10% Mass-reduction Advanced material component - 1-5% Integrated vehicle design - 5-10% Hybrid systems Stop-start mild hybrid 2% 6-8% Full hybrid electric system 4% 30-35% Plug-in electric 0.6% 50-100%
- 6. 相关技术 6 区域 CO2减排技术 技术比重 MY2013 潜在 CO2减排 动力系统 发动机 低磨损润滑 - 0.5% 发动机摩擦减少 - 2-4% 可变气门正时/升程 98% 4-6% 停缸技术 8% 5-6% 涡轮增压 15% 2-5% 涡轮增压机、汽油直接喷射 31% 8-15% 冷却废气再循环，涡轮增压机， GDI - 20-25% 压缩点火柴油机 1% 15-25% 数字气门驱动 - 5-10% 变速器 早期变矩器锁定 - 0.5% 最优化转换 - 2-6% 6速以上 61% 2-8% 无段变速 14% 8-11% 双离合，手自排变速 - 9-13% 机动车 空气动力 - 2-5% 轮胎滚动阻力 - 2-4% 附件(转向，空调, 交流发电机) - 1-4% 低制冷排放(低渗露, 低全球变暖潜力) - 2-10% 减重 高级材料组件 - 1-5% 一体化机动车设计 - 5-10% 混合系统 启动-停止、软性混合 2% 6-8% 全部混合电力系统 4% 30-35% 插入式电动车 0.6% 50-100% 间接利益: 减少动力系 统尺寸 和降低成本
- 7. Automaker Response to the Vehicle Lightweighting Challenge 汽车生产商对于机动车减重挑战的回应
- 8. Vehicle Lightweighting is a key strategy for efficiency 汽车减重是实现油耗目标的重要战略之一 8 Company Quote, statement, or commitment Year Ford •From 2011 to 2020: “Full implementation of known technology… weight reduction of 250-750 lbs” •“The use of advanced materials … offers automakers structural strength at a reduced weight to help improve fuel economy and meet safety and durability requirements •“Reducing weight will benefit the efficiency of every Ford vehicle. However, it’s particularly critical to improving the range of plug-in hybrid and battery electric vehicles 2009 Toyota •10-30% weight reduction for small to mid-size vehicles •Up to 20% weight reduction from Toyota New Global Architecture over 2015-2025 2009 2013 Volkswagen • “Automotive light weight solutions are necessary more than ever to reduce CO2 emissions ” • “Multi-Material Concepts promise cost effective light weight solutions ” 2008 GM •“One trend is clear - vehicles will consist of a more balanced use of many materials in the future, incorporating more lightweight materials such as nanocomposites and aluminum and magnesium.” •Aims to shed 500 lb from trucks by 2016, as much as 1000 lbs in early 2020s 2010 Mazda • Reduce each model by 220 lb by 2015; another 220 lb by 2020 2009 Nissan • Average 15% weight reduction by 2015 •“We are… expanding the use of aluminum and other lightweight materials, and reducing vehicle weight by rationalizing vehicle body structure 2010 Renault, Peugeot •Target of 440-lb reduction (approx. 15%) by 2018 2012 Mass reduction is expected from every automaker But some will do much more (and others will do less) Below are some public statements, anecdotes, quotes… 8
- 9. 9 公司 引用、声明和承诺 年份 Ford •从2011到2020年: “运用全部可知的技术…减重250-750 lbs” •“使用先进的材料…为汽车制造商提供结构强度，以减轻的重量帮助提高燃料经济性并达到安全和耐 久性要求 •“减轻重量有益于每辆福特车的效率。但是，提高插入式混合和电池电力机动车的范围非常重要 2009 Toyota •对小型到中型机动车进行10-30%减重 •2015至2025年丰田最新全球架构减重高达20% 2009 2013 Volkswagen • “汽车的减重方法对于降低CO2排放非常有必要 ” • “多种材料概念保证经济有效的减重方法” 2008 GM •“一个清晰趋势–机动车在未来将均衡使用很多的材料，包含更多轻型材料，如纳米复合材料、铝、 镁” •目标在2016年之前卡车减轻500 lb，2020s初减轻1000 lbs 2010 Mazda • 2015年之前，每个模型减轻220 lb; 2020年前另外减轻220 lb 2009 Nissan • 2015年平均15%减重 •“我们…正在扩大铝和其他轻型材料的使用，通过车身结构合理化实现减重” 2010 Renault, Peugeot •2018年之前目标440 lb减重(大约15%) by 2018 2012 Vehicle Lightweighting is a key strategy for efficiency 汽车减重是实现油耗目标的重要战略之一 每个汽车制造商都希望减重 但是有些会付出更大的努力 (其他的付出较少的努力) 以下是公开声明、承诺和引用… 9
- 10. Vehicle lightweighting examples in production 进入量产的轻量化车型举例 •Weights are compared to each vehicle model’s predecessor, except for BMW i3 EV, which is compared to the conventional steel structure. •减重是相对于上一代模型的重量差距，只有BMW i3 EV是与传统的钢制结构相比较。 Vehicle make 车型 Model year 年份 Weight reduction 减重 (kg)* Weight reduction 减重 (%)* Designed market 销售市场 Audi TT 3rd gen 2.0 TDI 2015 50 4% US, EU VW Golf TDI 2015 49 4% EU Lamborghini Huracan 2015 78 5% US, EU Acura MDX 2014 111 5% US Nissan Leaf 2012 80 5% US, EU Audi A3 2014 80 6% US, EU GM Cadillac CTS 2014 111 6% US Audi A8 2014 145 7% US, EU Porsche Cayenne 2012 181 8% US, EU Peugeot 308 SW Blue Hdi 2014 140 9% EU Ford F150 2015 318 14% US Audi Q7 2014 363 15% US, EU Land Rover Range Rover 2014 420 16% US, EU BMW i3 EV 2014 249 17% US, EU 10
- 11. Lightweighting technology developments (2015-2025) 轻量化技术发展（2015-2025）
- 12. Previous vehicle lightweighting research 汽车轻量化相关研究 Previous technical assessments on mass-reduction involve major studies by national US laboratories, OEM steel suppliers, OEMs with universities Data plotted as vehicle cost versus percent of vehicle mass reduced Each data point represents a different material/design approach to mass reduction Studies vary in technical rigor, transparency, comprehensiveness, crashworthiness validation 关于减重的技术评估包括美国国家实验室、OEM钢铁供应商、OEM与大学所做的 相关研究 图中各点为机动车减重的百分比与相应的成本 每个点所代表的减重方式（材料/设计）各不相同 每项研究的技术精确性、透明性、综合性和防撞性验证各不相同 12 -1000-5000500100015000%5%10%15%20%25%30%35% Incremental cost ($/vehicle) Percent vehicle curb weight reductionGeck 2007 Ford F150 Das 2009 Cheah 2007 Plotkin 2009 AISI 1998 Das 2010 Das 2008 Das 2008 Bull 2009 NAS 2010 Montalbo 2008 AISI 2001 Ausn 2008 Ausn 2008 EEA 2007 EEA 2007 Percent vehicle curb weight reduction
- 13. Major new vehicle lightweighting research 主要最新减重研究 13 Lotus Engineering (CARB) Cost-effective 18-32% mass reduction at < $0/vehicle for Toyota Venza Includes crashworthiness safety (NHTSA FMVSS) validation 2010年研究的延续(-20%, -33%重量 Toyota Venza) 包括耐撞性安全(NHTSA FMVSS) 认证 证明经济有效性 30%减重花费 < $0/机动车 FEV/EDAG (US EPA) Technical assessment of -18% mass Toyota Venza at < $0/vehicle Includes crashworthiness safety (NHTSA FMVSS) validation and detailed tear-down cost assessments 技术评估18%减重 Toyota Venza 花费 < $0/机动车 包括耐撞性安全(NHTSA FMVSS) 认证和具体的拆解成本评估 EDAG / Electricore (NHTSA) Technical assessment of -22% mass-reduced Honda Accord at $319/vehicle Includes crashworthiness safety (NHTSA FMVSS) validation 技术评估22%减重 Honda Accord 花费 $319/机动车 WorldAutoSteel “Future Steel Vehicle” 12-18% mass reduction, no additional cost, with only using steels 12-18%减重，仅使用钢材，无其他成本 George Washington University (NHTSA) 19% mass reduction from Chevrolet Silverado with advanced plastics, composites 19%减重 Chevrolet Silverado使用先进塑料和复合材料
- 14. Vehicle lightweighting is highly cost-effective 汽车轻量化具有很高的经济效益性 Major new state-of-the-art studies examine advanced materials, parts integration, system-level holistic vehicle redesign High lightweighting potential, crashworthy designs, and diverse highly cost-effective approaches EDAG, FEV, Lotus, and FSV lightweighting cost results are shown below 根据当前技术发展水平，主要研究对先进材料、零部件整合和整车系统设计改造进行 验证 轻量化潜力高、良好的防撞性设计，多种高经济效益的方法 下图显示了EDAG, FEV, Lotus, 和FSV的轻量化成本结果 14 -1000-5000500100015000%5%10%15%20%25%30%35% Incremental cost ($/vehicle) Percent vehicle curb weight reduction Data from older studies Data from recent state-of-art studiesGeck 2007 Ford F150 Lotus 2010 Das 2009 Cheah 2007 Plotkin 2009 AISI 1998 Das 2010 Das 2008 Das 2008 Bull 2009 NAS 2010 Montalbo 2008 AISI 2001 Ausn 2008 Ausn 2008 EEA 2007 EEA 2007 Lotus 2010 NHTSA EDAG 2012 FSV 2012 EPA FEV/EDAG 2012 Lotus 2012 Percent vehicle curb weight reduction
- 15. Fuel Consumption/Greenhouse Gas Standards Globally 世界燃油经济性/温室气体标准
- 16. Global passenger car fuel consumption standards 世界乘用车油耗标准 16 U S 2025[2] : 4.4 C anada 2025: 4.4 M exico 2016: 6.5 E U 2021: 4.1 Japan 2020: 4.5 C hina 2020[1] : 5.0 S . K orea 2015: 6.3 India: 4.8 B razil 2017[3] : 6.3 0 1 2 3 4 5 6 7 8 9 10 11 12 2000 2005 2010 2015 2020 2025 Liters per 100 K ilom eters (G asoline E quivalent) norm alized to N E D C Test C ycle U S C anada M exico EU Japan C hina S . K orea India B razil S olid lines: historical perform ance D ashed lines: enacted targets D otted lines: proposed targets or targets under study [1] China's target reflects gasoline vehicles only. The target may be higher after new energy vehicles are considered. [2] The U.S. standards are fuel economy standards set by NHTSA, which is slightly different from GHG stadards due to A/C credits. [3] Gasoline in Brazil contains 22% of ethanol (E22), all data in the chart have been converted to gasoline (E00) equivalent [4] Supporting data can be found at: http://www.theicct.org/info-tools/global-passenger-vehicle-standards. 7 8 9 10 11 12 aso lin e E q u ivalen t) Test C ycle U S C anad a M exico E U Jap an C hina S . K o rea S o lid lin es: h isto rical p erfo rm an ce D ash ed lin es: en acted targ ets D o tted lin es: p ro p o sed targ ets o r targ ets u n d er stu d y Supporting data and assumptions at http://www.theicct.org/info-tools/global-passenger-vehicle-standards Standards are driving efficiency technology innovation and deployment globally 油耗标准驱动着全球的高效汽车的技术创新与部署
- 17. 17 Country/ Region Regulated metric Attribute Form Categories, classes, other provisions Fuel Economy Fuel Consumption CO2/GHG Weight Footprint Class Continuous Bins European Union# X X X Eco-innovations, super-credits United States X X X X X 2WD, AC credit, FFV/E85, alternative fuels Japan X X X Averaging within bins China X X X X Transmission, per- vehicle limits corporate average Canada X X X X AC credits, alternative fuels South Korea* X X X X Eco-innovations Mexico X X X X India X X X #: CO2 standards complemented by Air-conditioning, tyre pressure monitoring, gear-shift indicators etc. * : FE/CO2 standards include consideration for tyre pressure monitoring, gear-shift indicators Form of standards varies widely across regions 不同地区标准的形式各不相同
- 18. 18 Weight vs. footprint based vehicle standards 基于质量与基于脚印面积机动车标准的比较 vehicle weight [kg] CO2 [g/km] 60% target line -100 kg -6 g/km -100 kg -6 g/km Weight-based target system 60% target line vehicle size [m2] Footprint-based target system If manufacturer applies weight reduction, most of the CO2-reduction effect is taken away due to more stringent CO2 target Manufacturer fully benefits from the CO2-reduction effect of lightweighting Weight-based standards reduce incentive to reduce weight 基于质量的标准体系大大降低了减重动力，并非技术中立
- 19. 0 300 600 900 1200 1500 1800 0 1000 2000 3000 4000 2000 2005 2010 2015 2020 2025 Vehicle mass (kg) Vehicle weight (lb) All else Plastic/composite Aluminum HSS/AHSS Estimating lightweighting and material trends 轻量化与材料趋势预测 US regulatory agencies are projecting a trend for ~10% average vehicle weight reduction for new vehicles in by 2025 Result from technology innovations (independent of fleet shifts in vehicle size) OEMs using far more AHSS, aluminum, composites to achieve lightweighting goals 美国管理部门预测到2025年机动车平均重量将降低大约10% 技术创新的结果（独立于车队尺寸的改变） 厂商将使用更多的超高强度钢、铝、复合材料以达到轻量化目标 19 13% ~18% 8% 8% ~16% ~11% See US EPA and NHTSA 2010-2012 rulemaking analysis, Wards material trends; Ducker Worldwide steel and aluminum trends, 2010-2012; Scheps, 2011 15% 9% 9%
- 20. Conclusions 结论 Lightweighting is a mainstream, cost-effective efficiency technology Innovations in materials, manufacturing, computer-aided engineering are opening up new frontiers for lightweighting to increase efficiency without compromising safety Lightweighting advances are especially critical for 2020+, electric vehicles Regulatory design matters Lightweight technology would be better promoted globally with size-based standards 轻量化是一个主流的、具有经济效益性的技术 材料、加工工艺和计算机辅助工程的创新将允许在不影响安全的情况下通过轻量化来达 到汽车效率的提高 轻量化的发展对2020年之后油耗走向和电动汽车尤为重要 政策管理设计十分重要 轻量化技术在基于尺寸的技术标准框架下会得到更好的发展 20
- 21. Resources and links to lightweighting studies 资料和轻量化研究相关链接 Rulemaking / 政策制定: Environmental Protection Agency (EPA) and National Highway Traffic Safety Admin. (NHTSA) http://www.epa.gov/otaq/climate/regulations.htm California Air Resources Board (CARB) http://www.arb.ca.gov/regact/2012/leviiighg2012/leviiighg2012.htm Lotus report: http://www.arb.ca.gov/msprog/levprog/leviii/leviii.htm Technical lightweighting studies, peer reviews: http://www.epa.gov/otaq/climate/strategies-vehicle.htm FEV EDAG: http://www.epa.gov/otaq/climate/documents/420r12026.pdf NHTSA EDAG: ftp://ftp.nhtsa.dot.gov/CAFE/2017-25_Final/811666.pdf Other resources /其他资源: ICCT lightweighting links, reports Lightweighting papers: http://theicct.org/vehicle-mass-reduction-resources Lotus Phase 1: http://theicct.org/sites/default/files/publications/Mass_reduction_final_2010.pdf World Auto Steel FSV: http://c315221.r21.cf1.rackcdn.com/FSV-EDAG_Phase2_Engineering_Report.pdf Mock, 2011. Evaluation of parameter-based vehicle emissions targets in the EU http://theicct.org/evaluation-parameter-based-vehicle-emissions-targets-eu Lutsey, N., 2010. Review of Technical Literature and Trends Related to Automobile Mass-Reduction Technology. http://pubs.its.ucdavis.edu/publication_detail.php?id=1390 German and Lutsey, 2010. Size or Mass? The Technical Rationale for Selecting Size as an Attribute for Vehicle Efficiency Standards http://theicct.org/size-or-mass-technical-rationale-selecting-size-attribute-vehicle-efficiency-standards 21