312C, 315C, 318C, 319C, 320C, 321C, 322C, 325C, 330C and M325C Excavators and 325C MHPU and 330C MHPU Mobile Hydraulic Power Units Engine and Pump Control - V2 Caterpillar


Sensors

Usage:

322C ADX
传感器向控制器提供关于工况变化的信息。 一些类型的信息如下列所示:转速, 温度 和 液位。 传感器信号成比例变化。 信号变化代表工况的改变。 控制器识别下列类型的传感器信号:

频率 - 传感器产生交流电信号(正弦波或方波),其频率随工况改变而变化。

脉冲宽度调制 - 传感器产生数字信号(PWM),其工作循环随工况改变而变化。 信号的频率将保持恒定。

发动机转速传感器




图 1g01322043

发动机转速传感器

发动机转速传感器位于飞轮壳体上。 飞轮轮齿经过传感器末端时,将产生交流电压。 交流电频率与轮齿经过传感器末端时的轮齿转速成比例。 控制器使用此信号作出与液压泵和发动机相关的决定。

反馈传感器




图 2g00685478

调速器执行器内的反馈传感器

注: 325C 和 330C 没有调速器执行器。

反馈传感器内置于调速器执行器中。 该传感器会向控制器发送一个 PWM 信号。 PWM 信号将调速器杆的位置告知控制器。 当控制器确定来自反馈传感器的信息与发动机转速旋钮的选择设定值和发动机转速相匹配时,控制器停止启动调速器执行器。

压力传感器




图 3g00685436

泵排放 1(驱动)和泵排放 2(怠速)

这些传感器向控制器发送信号。 控制器将使用这些信号修改以下各项:

  • 调整功率

  • 改变行驶速度

  • 确定轻负载和 1 级 "AEC"

Caterpillar Information System:

AP-1000B and BG-260C Asphalt Pavers Auxiliary System Shutoff Valve (Ventilation System)
8-16B, 10-20B and 10-20WB Extend-A-Mat<COMP-BREAK TAGNAME=cp850>©<COMP-RESUME> Screed Cut Off Shoe Installation
550 Wheel Harvester, 570 Wheel Harvester and 580 Wheel Harvester Power Train Traction Control System
CB-535B Vibratory Compactor Vibratory System Relief Valve (Pressure Override) - Test and Adjust
725 and 730 Articulated Trucks Hoist, Steering, and Brake System Breather - Inspect/Replace
2000/03/13 Serviceable Parts of the Fuel Injection Pump {1251, 1251}
988G Wheel Loader Power Train Differential and Bevel Gear - Install - Rear
824G Wheel Dozer, 825G Soil Compactor and 826G Landfill Compactor Hydraulic System Vane Pump (Implement)
2000/05/01 New Axle Housings Increase the Parts' Commonality {3259, 3260, 3278}
725 and 730 Articulated Trucks Oscillating Hitch - Lubricate
Installation of the 172-9321 Metering Pump for the Steering System{4312} Installation of the 172-9321 Metering Pump for the Steering System{4312}
784C, 785B, 785C, 785D, 789B, 789C, 789D, 793B, 793C, 793D, 797 and 797B Off-Highway Trucks VIMS &trade; Switch Circuits
3408E and 3412E Engines for Caterpillar Built Machines Camshaft Bearings - Remove
312C, 315C, 318C, 319C, 320C, 321C, 322C, 325C, 330C and M325C Excavators and 325C MHPU and 330C MHPU Mobile Hydraulic Power Units Engine and Pump Control - V2 Senders
988G Wheel Loader Power Train Differential and Bevel Gear - Assemble
725 and 730 Articulated Trucks Hoist, Steering, and Brake System Oil Level - Check
140H and 160H Motor Graders Cutting Edges and End Bits - Inspect/Replace
2006/03/27 The Differential and Bevel Gear Group Has Been Updated {3251, 3258}
CS-431C, CP-433C and CS-433C Vibratory Compactors Propel System Wheel and Tire
725 and 730 Articulated Trucks Fuses - Replace
216, 226 and 228 Skid Steer Loaders Engine Supplement Muffler - Remove and Install
120H Motor Grader Cutting Edges and End Bits - Inspect/Replace
3408E and 3412E Engines for Caterpillar Built Machines Camshaft Bearings - Install
797 Off-Highway Truck Power Train Transmission Hydraulic Control - Assemble
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