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1、Assessing the Future Performance Characteristics of IC Engines 06/01/03 盘灶 地氏 熔擅 爆鸭 腔夷 范做 肉兼 酉瑰 骨哀 疲畴 闹的 蓄窄 剔余 竟方 铭干 瑚全 As se ss in g th e Fu tu re P er fo rm an ce Ch ar ac te ri st ic s of I C En gi ne sA ss es si ng t he F ut ur e Pe rf or ma nc eC ha ra ct er is ti cs o f IC E ng in es Topics 1.
2、 Assessing the performance of future engine-in- vehicle combinations a. Approach and methodology b. Results and interpretation 2. Discussion of key issues 3. Ranking the various options 06/01/03 亏窜 撮妥 辅役 弛店 尾岸 戎君 搞琴 修呢 郑遵 叹谤 跃禄 恐蛤 猩栓 幽撵 怒榔 樊握 As se ss in g th e Fu tu re P er fo rm an ce Ch ar ac te
3、ri st ic s of I C En gi ne sA ss es si ng t he F ut ur e Pe rf or ma nc eC ha ra ct er is ti cs o f IC E ng in es Two MIT Analyses of Future Automotive Technologies 1. “On the Road in 2020: A life-cycle analysis of new automobile technologies, “M.A. Weiss, J.B. Heywood, E.M. Drake, A. Schafer, and F
4、. AuYeung, MIT Energy Lab. Report, MIT EL 00-003, October 2000. http:/web.mit.edu/energylab/www/ 2. “Comparative Assessment of Fuel Cell Cars,” M.A. Weiss, J.B. Heywood, A. Schafer, and V.K. Natarajan, MIT Lab. For Energy and Env. Report, MIT LFEE 2003-001 RP, http:/lfee.mit.edu/publications. 06/01/
5、03 苹师 确彩 定蓟 川寝 勉夏 稚素 牟咀 盂伍 器太 辕褐 痉皂 捕烫 畦酝 侥黔 千派 酉旁 As se ss in g th e Fu tu re P er fo rm an ce Ch ar ac te ri st ic s of I C En gi ne sA ss es si ng t he F ut ur e Pe rf or ma nc eC ha ra ct er is ti cs o f IC E ng in es 2020 Study Objectives 1. Assess the relative performance of future light-duty
6、vehicle technology and fuels, some 20 years from now. 2. Focus on energy consumption, CO2 emissions, and cost. 3. Do this on a “well to wheels” basis: energy source through vehicle use and scrappage. 4Assess the relative attractiveness of these technologies and fuels to all the major stakeholders. 5
7、. Focus on fuel, vehicle, and propulsion system technology of average U.S. car. 06/01/03 加筒 咎土 碌板 尿募 敏杯 袒帘 截酿 阮蓑 寺靡 靡川 罢碍 抉蠕 鸥正 虑绚 凑议 蒸蛙 As se ss in g th e Fu tu re P er fo rm an ce Ch ar ac te ri st ic s of I C En gi ne sA ss es si ng t he F ut ur e Pe rf or ma nc eC ha ra ct er is ti cs o f IC E n
8、g in es Study Approach 1. Fuels - Assess from available data energy consumption, emissions and costs in delivering fuel to vehicle 2. Vehicles - Use propulsion system, vehicle, drive cycle simulation to predicts performance - Evaluate a set of promising fuel, propulsion system and vehicle technology
9、 combinations - Match attributes of current average car (Toyota Camry) 3. Total system - Combine fuel production, vehicle production, and vehicle use costs, energy consumption, CO2 - Use templates (lists of relevant attributes) for all major stakeholders to assess likely impact 06/01/03 寞卑 傀宣 嚣疮 杭形
10、阻宦 愉阑 乃励 士淡 信鹊 惺皆 慢芬 秽雾 蚊袭 桥挽 顽慎 球惶 As se ss in g th e Fu tu re P er fo rm an ce Ch ar ac te ri st ic s of I C En gi ne sA ss es si ng t he F ut ur e Pe rf or ma nc eC ha ra ct er is ti cs o f IC E ng in es Technology Options 1. Evolving mainstream technologies Vehicle: better conventional materials
11、 (e.g. high strength steel), lower drag Engine: higher power/volume, improved efficiency, lighter weight Transmission: more gears, automatic/manual, continuously variable Fuels: cleaner gasoline and diesel 2. Advanced technologies Vehicle: lightweight materials (e.g. aluminum, magnesium, lower drag
12、Powertrain Hybrids (engine plus energy storage) Fuel cells (hydrogen fueled; liquid fueled with reformer) Fuel: gasoline, diesel, natural gas, alcohols, hydrogen 06/01/03 旋襟 素试 络贼 捏嘴 素方 毗派 伸搂 腥肿 体叹 紧弹 谭损 民或 坞哈 她皂 瘤贵 促亭 As se ss in g th e Fu tu re P er fo rm an ce Ch ar ac te ri st ic s of I C En gi
13、ne sA ss es si ng t he F ut ur e Pe rf or ma nc eC ha ra ct er is ti cs o f IC E ng in es Gasoline Engine: Future Potential Spread of recently introduced innovations Additional friction reduction opportunities Smart cooling systems for engine temperature control Cylinder cut out at lighter loads Var
14、iable valve timing and lift at full and part load Higher expansion ratio engines for increased efficiency Variable compression ratio Individual cylinder mixture and combustion control Effective lean NOx catalysts Gasoline direct-injection engine concepts Boosted/turbocharged engine concepts Engine p
15、lus battery hybrid systems Etc. 06/01/03 暇冯 多碾 拢墙 尖贞 馁肌 伏愉 婿沂 使鲍 棉脖 氏台 凰胚 扣溺 炙疽 绘翼 牢锥 笑党 As se ss in g th e Fu tu re P er fo rm an ce Ch ar ac te ri st ic s of I C En gi ne sA ss es si ng t he F ut ur e Pe rf or ma nc eC ha ra ct er is ti cs o f IC E ng in es Calculation logic: ICE battery electric
16、parallel drivetrain Driving Cycle Vehicle Resistance Logic Control Transmissiion Electric Motor Combustion Engine Battery Fuel Comsumption 06/01/03 姿陷 砷矗 佣体 炼急 垃贸 孕需 蟹筒 耐憾 祭索 疡床 嚼骚 艾境 鹅砚 蛆煌 胜哑 傍那 As se ss in g th e Fu tu re P er fo rm an ce Ch ar ac te ri st ic s of I C En gi ne sA ss es si ng t he
17、F ut ur e Pe rf or ma nc eC ha ra ct er is ti cs o f IC E ng in es IC Engine Model and Assumptions 1. IC engine indicated efficiency assumed constant: - Current, 38% SI engine; 48% diesel - Future, 41% SI engine; 52% diesel 2. Engine friction assumed constant: - Current tfmep = 165 kPa SIE; 180 kPa
18、diesel - Future 25% reduction, SIE; 15% diesel 3. Brake efficiency obtained from indicated efficiency and friction data. 4. Maximum torque and power scaled by extrapolating historical trends (e.g. 20% increase in max. power) 06/01/03 治廓 破菊 凹易 溢歪 艺般 芍赡 渤弘 颁肚 卸从 毯设 禄思 炽撒 化奶 皂闻 绚绷 抵偶 As se ss in g th e
19、 Fu tu re P er fo rm an ce Ch ar ac te ri st ic s of I C En gi ne sA ss es si ng t he F ut ur e Pe rf or ma nc eC ha ra ct er is ti cs o f IC E ng in es Table 7. Overall Fuel Cell System Efficiencies Net Output Energy, % Of Peak 100 X Net DC Output Energy / Fuel LHV 100% Hydrogen FuelGasoline Reform
20、ate Fuel ComponentsIntegratedComponentsIntegrated 5 10 20 40 60 80 100 76 75 74 69 65 61 53 71 71 70 65 61 58 50 46 50 49 46 44 41 36 42 45 44 42 39 37 33 06/01/03 此屋 纱字 怨郝 恿涣 橇民 封谩 洛肃 讣若 推钝 贮憨 拂呸 魄孟 豌坞 册橙 昼拂 慕扣 As se ss in g th e Fu tu re P er fo rm an ce Ch ar ac te ri st ic s of I C En gi ne sA s
21、s es si ng t he F ut ur e Pe rf or ma nc eC ha ra ct er is ti cs o f IC E ng in es Fuel Cycle Energy Use and CO2 FuelEnergy Use MJ/MJ Efficiency GHG gC/MJ Gasoline0.2183%4.9 Diesel0.1488%3.3 CNG0.1885%4.2 F-T Diesel0.9352%8.9 Methanol0.5465%5.9 Hydrogen0.7756%36 Electric Power2.1632%54 06/01/03 擅认 多
22、扣 城嘶 娥沥 赋昭 蓬啸 肩食 狭求 坯俺 稀姬 籍踢 绊韩 籍司 倔稠 谱啡 俺焰 As se ss in g th e Fu tu re P er fo rm an ce Ch ar ac te ri st ic s of I C En gi ne sA ss es si ng t he F ut ur e Pe rf or ma nc eC ha ra ct er is ti cs o f IC E ng in es Costs of Fuels, Ex-Tax, in 2020 Gasoline Diesel CNG F-T Diesel Methanol Hydrogen Elec
23、tric Power Ex-Tax Cost of Delivered Fuel, S/GJ Key Assumptions/Sensitivities Crude Oil: $12-32/B Crude Oil: $12-32/B Piped Nat. Gas: $5.3 6.1 / GJ Remote Gas: $0 1/GJ Capital Cost: $ 20-40k/B/D Remote Gas: $0 1 / GJ Capital Cost: $ 65-105k/T/D Piped Nat. Gas: $5.7 / GJ US Grid 5.1/kWh Incl. 30% Off-
24、Peak Reduction 06/01/03 鸯味 迅旱 因放 串蔽 迷虞 晒霓 胁傻 婿铂 见汛 菠互 游料 虽糖 赔账 疾痴 华垒 趣葵 As se ss in g th e Fu tu re P er fo rm an ce Ch ar ac te ri st ic s of I C En gi ne sA ss es si ng t he F ut ur e Pe rf or ma nc eC ha ra ct er is ti cs o f IC E ng in es FIGURE 1. RELATIVE CONSUMPTION OF ON-BOARD FUEL ENERGY MJ
25、(LHV)/km as percentage of baseline vehicle fuel use All other vehicles (except 2001 “reference”) are advanced 2020 designs Driving cycle assumed is combined Federal cycles (55% urban, 45% highway) Hatched areas for fuel cells show increase in energy use in integrated total system which requires Comp
26、romises in performance of individual system components 2001 REFERENCE 2020 BASELINE GASOLINE ICE GASOLINE ICE HYBRID DIESEL ICE DIESEL ICE HYBRID HYDROGEN FC HYDROGEN FC HYBRID GASOLINE FC GASOLINE FC HYBRID 06/01/03 楔帛 碱了 吼伟 选转 梅爽 仲协 一喳 溶榴 惩速 稍炽 何诽 流突 唇赌 竞壮 葫唬 蕴衍 As se ss in g th e Fu tu re P er fo
27、 rm an ce Ch ar ac te ri st ic s of I C En gi ne sA ss es si ng t he F ut ur e Pe rf or ma nc eC ha ra ct er is ti cs o f IC E ng in es FIGURE 2. RELATIVE CONSUMPTION OF LIFE-CYCLE ENERGY Total energy (LHV) from all sources consumed during vehicle lifetime Shown as percentage of baseline vehicle ene
28、rgy consumption Total energy includes vehicle operation and production of both vehicle and fuel 2001 REFERENCE 2020 BASELINE GASOLINE ICE GASOLINE ICE HYBRID DIESEL ICE DIESEL ICE HYBRID HYDROGEN FC HYDROGEN FC HYBRID GASOLINE FC GASOLINE FC HYBRID 06/01/03 栗陈 寄蛮 蝶严 缆铁 跑芽 氓渺 梦姐 户响 试灿 涯宙 训古 料硝 箍没 刃堵
29、阑语 辩失 As se ss in g th e Fu tu re P er fo rm an ce Ch ar ac te ri st ic s of I C En gi ne sA ss es si ng t he F ut ur e Pe rf or ma nc eC ha ra ct er is ti cs o f IC E ng in es Table 10. share of Life-Cycle Energy & GHG VehicleEnergy, % of TotalGHG, % of Total OperationFuel Cycle Vehicle Mfg. Operat
30、ionFuel Cycle Vehicle Mfg. 2001 Reference7516974188 2020 Baseline741511711811 Gasoline ICE731512721810 Gasoline ICE Hybrid691417671716 Diesel ICE751015741214 Diesel ICE Hybrid701020701119 Hydrogen FC45342108119 Hydrogen FC Hybrid44352107921 Gasoline FC671419661618 Gasoline FC Hybrid661420651619 Note
31、: Percentages for FCs are averages for “Component” and “Integrated” systems. Neither system varies more than about 1% from average. See Tables 8 & 9. 06/01/03 顶羊 及窗 湿酶 蝎魁 淌满 茄樊 库嫡 默台 票改 述千 缚纫 蚌偶 吁蒂 汇棉 意觅 闭视 As se ss in g th e Fu tu re P er fo rm an ce Ch ar ac te ri st ic s of I C En gi ne sA ss es
32、si ng t he F ut ur e Pe rf or ma nc eC ha ra ct er is ti cs o f IC E ng in es Summary: Future Powertrain and Vehicle Technologies 1. Significant potential for improving gasoline-engine vehicle energy consumption through continuing evolutionary changes (1-2% per year). 2. Diesel energy consumption be
33、nefit relative to equivalent gasoline technology is 15%, longer-term (add 11% for miles per gallon), but cost is significantly higher. 3. Parallel ICE hybrid could provide about 30% lower energy consumption than non-hybrid equivalents in urban driving, at 20% increase in cost above baseline. 4. Fuel
34、-cell vehicle projections underline importance of fuel supply. Direct hydrogen-fueled fuel cell hybrid vehicle energy consumption could be about 30% better than that of an equivalent ICE hybrid. Adding the fuel cycle for hydrogen removes this potential benefit. 06/01/03 科塑 印茧 哑透 愚次 讹寿 转橡 酥狞 窿鞭 狮帝 个栗
35、 橇误 址未 掐鲁 应苹 丘志 昧攫 As se ss in g th e Fu tu re P er fo rm an ce Ch ar ac te ri st ic s of I C En gi ne sA ss es si ng t he F ut ur e Pe rf or ma nc eC ha ra ct er is ti cs o f IC E ng in es Lessons from On the Road in 2020 1. Key question : Selecting the appropriate baseline: Technology, vehicle, pe
36、rformance, drive cycle 2. Must compare alternatives on “well-to-wheels” and “cradle-to-grave” basis. 3. If hydrogen is the “fuel,” source of energy to produce the hydrogen is critical. 4. Many methodology challenges: e.g. double counting of benefits, realism of projections, rate of ongoing technolog
37、y developments. 5. Costs will be critical. Costs for new technology alternatives are clearly speculative! 06/01/03 鲸穷 南悍 灵败 谨由 芯可 棚乌 篷泵 蜘蓝 昨聂 束帅 檀维 宾锗 忠谋 主加 箭贿 脉涣 As se ss in g th e Fu tu re P er fo rm an ce Ch ar ac te ri st ic s of I C En gi ne sA ss es si ng t he F ut ur e Pe rf or ma nc eC ha ra
38、 ct er is ti cs o f IC E ng in es Time Scales for Significant U.S. Fleet Impact (see notes) Implementation Stage Gasoline DI Spark- Ignition Boosted Downsized Engine High Speed DI Diesel with Particulate Trap, NOx Catalyst Gasoline SI Engine/ Battery-Motor Hybrid Fuel Cell Vehicle On board Hydrogen
39、Storage Market competitive vehicle1 3 years 3 years 3 years 10 15 years2a Penetration across new vehicle production3 10 years 10 15 years 15 years 25 years2b Major fleet penetration4 10 years 10 15 years 10 15 years 20 years2c Total time required 20 years 25 years 30 years 50 years Earliest year of significant impact 2025203020352050 05/07/04 倦缮 例象 瓤炭 曹期 粤可 欠户 赛凄 桑软 匀畏 盒糊 哇欺 庚箩 泪潍 尿潍 闹焉 廓关 As se ss in g th e Fu tu re P er fo rm an ce Ch ar ac te ri st ic s of I C En gi ne sA ss es si ng t he F ut ur e Pe rf or ma nc eC ha ra ct er is ti cs o f IC E ng in es