发动机机械系统 ［2
5 TCI］ 概述 ························ ·························· EM- 2 发动机气缸体 ················································· EM-24 主运动系统 ················································ EM-35 冷却系统 ················································ EM-42 润滑系统 ················································ EM-51 进气和排气系统 ················································ EM-56 缸盖总成 ················································ EM-70 正时系统 ················································ EM-78 EM-2 发动机机械系统［2
5 TCI］ 概述 概述 ELCB0010 ［2
5 T CI］ 增压补偿器 ECLA001B 涡轮增压器 机油滤清器 发电机 油底壳 机油尺 油底壳 EGR 阀 废气旁通阀 飞轮 自动怠速提升执行器 喷油泵 概述 EM -3 技术规格 ELCB0020 标准 极限 发动机型号 类型 缸数 配气机构 总排量 孔径×冲程 压缩比 D4BH（2
5 TCI） 柴油发动机 4 缸直列 顶置凸轮轴 2
467 cc 91
1×95mm 21 配气正时 进气门 开启（BTDC） 关闭（ABDC） 排气门 开启（BBDC） 关闭（ATDC） 20° 48° 54°
