柴油机电控燃油喷射系统开发与研究

2009-4-16 13:52:36 3318

0 柴油机电控燃油喷射系统开发与研究本论文结合大连柴油机厂与无锡威孚公司联合开发的电控项目，开发了适合大连柴油机厂CA498z 柴油机的电控分配泵，并在威孚公司和大连柴油机厂进行了大量的燃油系统匹配实验、发动机台架实验以及电控泵与机械泵的对比实验。实验结果表明，所开发的电控分配泵完全可以满足发动机整个运转工况的要求，并具有良好的抗干扰性。电控泵的可靠性在大量的匹配实验过程中也经受住了考验。由于对燃油系统进行了优化匹配，电控分配泵泵端压力、嘴端压力都较机械泵有较大幅度的提高，由于压力波动所造成的二次喷射现象也有较大幅度的降低。大量的发动机台架实验结果表明，装有电控泵的发动机在动力性上完全可以满足CA498z 柴油机的设计要求，并在经济性和排放性性能方面较装有机械泵的发动机有较大幅度的提高。关键词：电控分配泵、燃油系统、控制系统、CA498z 柴油机第一章绪论·······································································································(1) 1.1 柴油机所面临的挑战和发展趋势···································································· (1) 1.2 柴油机电控技术的发展·················································································· (2) 1.2.1 柴油机电控系统发展概述·································································· (2) 1.2.2 我国柴油机电控技术的发展方向························································ (4) 1.3 本文主要研究内容························································································· (5) 第二章电控燃油供给系统设计与匹配····························································(6) 2.1 机械式VE 泵工作原理·················································································· (6) 2.2 电控式VE 泵燃油系统的设计······································································· (8) 2.3 电控燃油系统机械部件的优化匹配······························································ (14) 2.3.1 油泵内部关键部件的优化匹配···························································· (14) 2.3.1.1 凸轮······························································································· (14) 2.3.1.2 出油阀···························································································· (17) 2.3.1.3 柱塞······························································································· (20) 2.3.2 其他外部部件的匹配············································································ (21) 2.3.2.1 油管的选择····················································································· (21) 2.3.2.2 油嘴的选择····················································································· (22) 2.3.3 燃油系统最终匹配方案········································································ (26) 第三章电控系统的总体设计··········································································(27) 3.1 电控系统的总体结构··················································································· (27) 3.2 微处理器···································································································· (29) 3.3 电源电路···································································································· (30) 3.4 供油量控制································································································ (31) 3.5 供油提前角控制·························································································· (35) 3.6 停油控制···································································································· (37) 3.7 人机交互系统····························································································· (38) 3.8 抗干扰措施································································································ (40) 3.8.1 硬件抗干扰措施················································································ (40) 3.8.2 软件抗干扰措施···················································································· (41) 第四章电控喷油系统与发动机的匹配实验···················································(42) 4.1 实验设备及仪器·························································································· (42) 4.1.1 实验设备及仪器················································································ (42) 4.1.2 实验所用发动机················································································ (44) 4.2 电控VE 泵与CA498z 发动机匹配实验························································ (45) 4.2.1 实验分区方案···················································································· (45) 4.2.2 供油量和提前角选区的方案······························································· (45) 4.2.3 电控燃油系统匹配结果······································································ (50) 第五章电控发动机的性能实验与分析··························································(51) 5.1 电控发动机稳态性能分析············································································ (51) 5.2 怠速稳定性控制与分析··············································································· (53) 5.3 电控CA498z 柴油机瞬态性能实验······························································· (54) 5.4 发动机性能对比实验··················································································· (55) 5.4.1 动力性比较·························································································· (56) 5.4.2 经济性比较·························································································· (56) 0 本帖子中包含更多资源您需要登录才可以下载或查看，没有帐号？注册 x
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