1、任務書學生姓名： 專業班級： 指導教師： 工作單位： 汽車工程學院 題 目: 45kw四沖程柴油機連桿組設計初始條件：1、平均有效壓力：0.81.2mpa2、活塞平均速度：1.5 合格5.2.2連桿大頭強度的計算連桿大頭受慣性拉伸載荷：式中，、分別是活塞組，連桿組往復部分，連桿旋轉部分及連桿大頭下半部分的重量。取則彎曲應力為：式中z計算斷面的抗彎矩斷面模數，取-計算圓環的曲率半徑，計算可得 、-大頭及軸承中央截面面積，計算可得查楊連生內燃機設計值在之間，合格。小結作為一名熱能與動力工程的學大四生，我覺得能做類似的課程設計是十分有意義，而且是十分必要的。在已度過的大四的時間里我們大多數接觸的是專

2、業基礎課。通過這次親身的設計實踐，我們對這些專業課的基礎知識和基本理論有了進一步的理解和掌握。設計的整個過程都有老師在一旁指導，有問題可以及時解決，學到了很多發動機和連桿的知識。我把這次課程所學到的東西總結為以下幾點：1學會了分析、計算、設計、繪圖、運用各種標準和規范、查閱各種設計手冊與資料。2.學會了應用計算機計算，繪圖能力等方面得到進一步的提高。3.初步建立了用工程的觀念處理問題。4.全面地檢驗并鞏固我們以前所學的專業課知識，并通過結合實際，從一個全新的角度重新學習、認識以前學過的專業課知識。5. 了解國內外發動機的發展現狀，對當代先進的發動機技術有了一些了解。6. 此次課程設計還為我們下

3、學期的畢業設計奠定了堅實的基礎。參考文獻1 楊連生內燃機設計北京：中國農業機械出版社，19812 陸際青汽車發動機設計北京：清華大學出版社，1990 3 唐增寶，何永然，劉安俊機械設計課程設計武漢：華中科技大學出版社，19994 周龍保內燃機學北京：機械工業出版社，20055 吳兆漢內燃機設計北京：北京理工大學出版社，19906 沈維道工程熱力學北京：高等教育出版社，2002附 錄附表1,p-v圖計算曲軸轉角（）弧度氣缸容積（l)多變指數n1膨脹比多變指數n2燃氣壓力（mpa)調整后壓力1803.1415930.28230.0850.0851853.2288590.2819362491.350

4、.085433240.085433241903.3161260.2808445831.350.085881860.085881861953.4033920.2790238631.350.0866392720.086639272003.4906590.276472521.350.087720370.087720372053.5779250.2731890351.350.0891466870.089146692103.6651910.2691725861.350.090947130.090947132153.7524580.2644238421.350.0931589940.09315899220

5、3.8397240.2589458611.350.0958293410.095829342253.9269910.2527450771.350.0990168170.099016822304.0142570.245832321.350.1027940530.102794052354.1015240.2382238361.350.1072508080.107250812404.188790.2299422751.350.1124981040.11249812454.2760570.2210175821.350.1186736780.118673682504.3633230.2114877791.

6、350.1259492230.125949222554.450590.2013995831.350.1345400380.134540042604.5378560.1908088371.350.1447180360.144718042654.6251230.1797807141.350.156829380.156829382704.7123890.16838971.350.1713186550.171318662754.7996550.1567193051.350.1887622930.188762292804.8869220.1448615291.350.2099152430.2099152

7、42854.9741880.1329160641.350.2357767770.235776782905.0614550.1209892491.350.2676840290.267684032955.1487210.109192791.350.3074459420.307445943005.2359880.0976422751.350.3575357410.357535743055.3232540.0864555111.350.4213669710.421366973105.4105210.0757507181.350.5036843940.503684393155.4977870.06564

8、46231.350.611099250.611099253205.5850540.0562505011.350.7527659710.752765973255.672320.0476762111.350.9410729240.941072923305.7595870.0400222641.351.1918548881.191854893355.8468530.0333799941.351.5227344331.522734433405.9341190.0278298531.351.9464394221.946439423456.0213860.0234398891.352.4540906892

9、.454090693506.1086520.0202644521.352.9870229512.987022953556.1959190.0183431321.353.4169718773.416971883606.2831850.01771.353.5856401663.585640173606.2831850.01771.57.186.93656.3704520.0183431321.57.1873706.4577180.0202644521.57.187.183756.5449850.0234398891.57.187.13806.6322510.0278298531.57.187384

10、6.7020640.032180231.57.186.93856.7195180.0333799941.256.1373204846.137320483906.8067840.0400222641.254.8916970814.891697083956.8940510.0476762111.253.9306055213.930605524006.9813170.0562505011.253.1965288343.196528834057.0685830.0656446231.252.6353461972.63534624107.155850.0757507181.252.2034498912.

11、203449894157.2431160.0864555111.251.8678662161.867866224207.3303830.0976422751.251.6043135811.604313584257.4176490.109192791.251.3950641241.395064124307.5049160.1209892491.251.2271655271.227165534357.5921820.1329160641.251.0911005681.091100574407.6794490.1448615291.250.9798177250.979817734457.766715

12、0.1567193051.250.888041990.888041994507.8539820.16838971.250.8117872350.811787244557.9412480.1797807141.250.7480105870.748010594608.0285150.1908088371.250.6943661130.694366114658.1157810.2013995831.250.6490279690.649027974708.2030470.2114877791.250.610562360.610562364758.2903140.2210175821.250.57783

13、40020.5778344808.377580.2299422751.250.5499371930.549937194858.4648470.2382238361.250.5261445840.526144584908.5521130.245832321.250.5058688040.50586884958.639380.2527450771.250.4886335020.48863355008.7266460.2589458611.250.4740513690.474051375058.8139130.2644238421.250.461807370.461807375108.9011790

14、.2691725861.250.4516459170.451645925158.9884460.2731890351.250.4433610560.443361065209.0757120.276472521.250.4367889650.35259.1629790.2790238631.250.4318022870.25309.2502450.2808445831.250.4283059010.155359.3375110.2819362491.250.4262338880.15409.4247780.28231.250.4255474810.095409.4247780.28231.250

15、.0850.085附表2，運動學計算曲軸轉角（）弧度活塞位移（cm)活塞速度(m/s)活塞加速度(m/s2)連桿擺角（）連桿擺角弧度000012584.3200100.1745330.0679481724.10940000812268.942062.7869049560.048641200.3490660.2683949398.01379308111347.370475.4953886860.095913300.5235990.59141108711.524067979890.7387578.0478462470.140461400.6981321.02130064614.4812558980

16、09.38811910.368625780.180967500.8726651.5377871716.767670155841.54420812.385751830.216172601.0471982.117518.313839213539.3414.033378410.244929701.221732.73561038719.100617541253.78857515.254912510.266248801.3962633.3674560719.15641013-879.582581616.0064860.279366901.5707963.9918.55-2752.8216.2602047

17、10.2837941001.7453294.58299331417.37995751-4294.02669916.0064860.2793661101.9198625.1297513915.76197869-5471.35350315.254912510.2662481202.0943955.617513.81570327-6292.1614.033378410.2449291302.2689286.03730043711.65257869-6797.58856112.385751830.2161721402.4434616.3836117479.366164425-7053.34376610

18、.368625780.1809671502.6179946.6535889137.025932026-7137.9187578.0478462470.1404611602.7925276.8462432844.675154236-7129.8055375.4953886860.0959131702.967066.9616024432.332947384-7095.3327832.7869049560.0486411803.14159371.63631e-15-7078.681.96548e-153.43e-171903.3161266.961602443-2.332947384-7095.33

19、2783-2.786904956-0.048642003.4906596.846243284-4.675154236-7129.805537-5.495388686-0.095912103.6651916.653588913-7.025932026-7137.918757-8.047846247-0.140462203.8397246.383611747-9.366164425-7053.343766-10.36862578-0.180972304.0142576.037300437-11.65257869-6797.588561-12.38575183-0.216172404.188795.

20、6175-13.81570327-6292.16-14.03337841-0.244932504.3633235.12975139-15.76197869-5471.353503-15.25491251-0.266252604.5378564.582993314-17.37995751-4294.026699-16.006486-0.279372704.7123893.99-18.55-2752.82-16.26020471-0.283792804.8869223.36745607-19.15641013-879.5825816-16.006486-0.279372905.0614552.73

21、5610387-19.100617541253.788575-15.25491251-0.266253005.2359882.1175-18.313839213539.34-14.03337841-0.244933105.4105211.53778717-16.767670155841.544208-12.38575183-0.216173205.5850541.021300646-14.481255898009.388119-10.36862578-0.180973305.7595870.591411087-11.524067979890.738757-8.047846247-0.140463405.9341190.268394939-8.01379308111347.37047-5.495388686-0.095913506.1086520.067948172-4.10940000812268.942