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| 图 1 | g01212133 |
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机器 ECM 的方块图 (1) 开关面板 (2) 空气滤清器堵塞开关 (3) 液压油滤清器堵塞开关 (4) 附件液压油滤清器堵塞开关 (5) 燃油滤清器堵塞开关 (6) 2 号燃油滤清器堵塞开关 (7) 油水分离器液位开关 (8) 过载警告开关 (9) 回转微调开关 (10) 快速连接器开关 (11) 行走警告继电器 (12) 机器 ECM (13) 起动马达开关 (14) 发动机转速旋钮 (15) 一触式低怠速开关 (16) 转速传感器 (17) 1 号泵压力传感器 (18) 2 号泵压力传感器 (19) 作业机具压力开关 (20) 向右行驶压力开关 (21) 向左行驶压力开关 (22) 备用开关 (23) 回转制动器分离电磁阀 (24) 行驶速度变换电磁阀。 (25) 动力换档压力比例减压阀 (26) 直行电磁阀 (27) 粘滞离合器 (28) 重载提升电磁阀 (29) 直线行驶压力开关 (30) 环境温度传感器 (31) 过载警告压力传感器 (32) 监视器 (33) 燃油油位传感器 (34) 液压油温传感器 (35) 交流发电机 (36) 空气加热器控制器 (37) 故障报警 (38) 发动机机油油位开关 (39) 发动机冷却液液位开关 (40) 液压油油位开关 (41) 发动机 ECM (42) 用户停机开关 (43) 发动机冷却液温度传感器 (44) 发动机机油压力开关 | |
机器电子控制系统提供对液压系统的电子控制。 系统包括下列部件：各种输入（开关和传感器）, 一个电子控制模块 和 各种输出（电磁阀）。 发动电子控制模块（ECM）控制发动机。 机器 ECM 还控制下列功能：
- 发动机转速
- 履带行驶马达
- 行驶报警
- 回转制动器
- 重载提升
- 附件执行器
- 泵动力换档压力
- 液压限流
机器 ECM 从图 1 所示的各种输入设备接收信号。 ECM 根据这些信息做出决策。 ECM 按照这些决策执行动作：驱动比例电磁阀、开/关电磁阀和继电器。
Caterpillar Information System:
324D, 325D, 326D and 329D Excavators and 329D MHPU Mobile Hydraulic Power Unit Machine Systems Relief Valve (Pilot) - Remove
3500 and 3500B High Displacement Engines for Caterpillar Built Machines Engine Oil Scavenge Pump - Install
320D and 323D Excavators Hydraulic System Swing Speed and Swing Drift on a Slope - Check
320D and 323D Excavators Hydraulic System Swing Speed and Overswing on Level Ground - Check
320D RR Excavator and 320D RR Forest Machine Hydraulic System Travel on Level Ground - Test - Optional Test
2005/09/26 A New Fuel Lift Pump is Now Available {1256, 1258}
330D, 336D, 336D2, 340D and 340D2 Excavators and 336D MHPU Mobile Hydraulic Power Unit Machine Systems Pilot Valve (Joystick) - Assemble
320D and 323D Excavators Hydraulic System Travel on Level Ground - Test
320D RR Excavator and 320D RR Forest Machine Hydraulic System Operational Checks
PP120 and PH126 Power Pack and Hammer Hydraulic Hand Control - Assemble
PP120 and PH126 Power Pack and Hammer Hydraulic Hand Control - Disassemble
M325D MH Material Handler Air Conditioning and Heating Control
320D RR Excavator and 320D RR Forest Machine Hydraulic System Cylinder Drift - Check - Loaded Bucket
320D, 321D, 323D, 324D, 325D, 326D, 328D, 329D, 330D, 336D, 336D2, 340D and 340D2 Excavators, 324D Forest Machine and 323D MHPU, 324D MHPU, 325D MHPU, 329D MHPU, 330D MHPU and 336D MHPU Mobile Hydraulic Power Units Machine Electronic Control System System Operation
320D and 323D Excavators Hydraulic System Cylinder Speed - Check
324D, 325D, 326D and 329D Excavators and 329D MHPU Mobile Hydraulic Power Unit Machine Systems Relief Valve (Pilot) - Install
320D, 321D, 323D, 324D, 325D, 326D, 328D, 329D, 330D, 336D, 336D2, 340D and 340D2 Excavators, 324D Forest Machine and 323D MHPU, 324D MHPU, 325D MHPU, 329D MHPU, 330D MHPU and 336D MHPU Mobile Hydraulic Power Units Machine Electronic Control System Diagnostic Operation
330D, 336D, 336D2, 340D and 340D2 Excavators and 336D MHPU Mobile Hydraulic Power Unit C9 Engine Supplement Refrigerant Compressor - Remove and Install
324D, 325D, 326D and 329D Excavators and 329D MHPU Mobile Hydraulic Power Unit Machine Systems Manual Valve (Auxiliary Shutoff) - Remove
320D, 321D, 323D, 324D, 325D, 326D, 328D, 329D, 330D, 336D, 336D2, 340D and 340D2 Excavators, 324D Forest Machine and 323D MHPU, 324D MHPU, 325D MHPU, 329D MHPU, 330D MHPU and 336D MHPU Mobile Hydraulic Power Units Machine Electronic Control System Electronic Control Module (Machine)
330D, 336D, 336D2, 340D and 340D2 Excavators and 336D MHPU Mobile Hydraulic Power Unit C9 Engine Supplement Air Cleaner - Remove and Install
330D, 336D, 336D2, 340D and 340D2 Excavators and 336D MHPU Mobile Hydraulic Power Unit C9 Engine Supplement Alternator - Remove and Install
330D, 336D, 336D2, 340D and 340D2 Excavators and 336D MHPU Mobile Hydraulic Power Unit C9 Engine Supplement Battery - Remove and Install
330D, 336D, 336D2, 340D and 340D2 Excavators and 336D MHPU Mobile Hydraulic Power Unit C9 Engine Supplement Electric Starting Motor - Remove and Install