公开(公告)号：WO2015027232A1

公开(公告)日：2015-02-26

申请号：PCT/US2014/052424

申请日：2014-08-23

Applicant: CATERPILLAR INC.

Inventor： SPURGEON, Daniel A. ,  NJOS, Erick A. ,  HOVEL, Douglas J. ,  MORRIS, Gerald R.

IPC: B60H1/32 ,  F25B1/00 ,  E02F9/16

CPC classification number: B60H1/3216 ,  B60H1/00378 ,  B60H2001/3261 ,  B60H2001/3272 ,  F25B49/022 ,  F25B2600/0251

Abstract: An air conditioning system (200) for an operator cab (104) of machine (100) includes a condenser (206), an evaporator (202), a compressor (204) and a controller (210) operable to control an operation of the compressor (204). The controller (210) maintains a pre-defined compressor (204) run time when the compressor (204) is in an ON state. The controller (210) is configured to determine a temperature of the evaporator (202) and compare it with at least one of a first lower threshold temperature value and a second lower threshold temperature value being less than the first lower threshold temperature value. The controller (210) outputs a compressor (204) control command signal to change the operational state of the compressor (204) to an OFF state when the determined temperature of the evaporator (202) is less than at least one of the first lower threshold temperature value for a first time period, and the second lower threshold temperature value for a second time period being less than the first time period.

Abstract translation: 用于机器（100）的操作员驾驶室（104）的空调系统（200）包括冷凝器（206），蒸发器（202），压缩机（204）和控制器（210），其可操作以控制 压缩机（204）。 当压缩机（204）处于接通状态时，控制器（210）维持预定压缩机（204）的运行时间。 控制器（210）被配置为确定蒸发器（202）的温度并将其与低于第一下阈值温度值的第一下阈值温度值和第二下阈值温度值中的至少一个进行比较。 当所确定的蒸发器（202）的温度小于第一下阈值（202）中的至少一个时，控制器（210）输出压缩机（204）控制命令信号，以将压缩机（204）的操作状态改变为OFF状态， 温度值，第二时间段的第二下阈值温度值小于第一时间段。

公开(公告)号：WO2019018118A1

公开(公告)日：2019-01-24

申请号：PCT/US2018/040314

申请日：2018-06-29

Applicant: CATERPILLAR INC.

Inventor： HOVEL, Douglas J. ,  CARR, Daren R. ,  NJOS, Erick A. ,  SPURGEON, Daniel A. ,  VALERIO, Micheal D.

IPC: E02F9/20 ,  E02F9/24 ,  E02F9/16

Abstract: A system (200) and method (300) for monitoring a cabin (104) of machine (100) is provided. The system (200) includes an operator presence sensor (204), a cabin pressure sensor (206), a door sensor (208), and a carbon dioxide sensor (210) configured to generate the first output signal, the second output signal, the third output signal and the fourth output signal respectively. The system (200) includes a controller (202) configured to selectively process at least one of the first output signal, the second output signal, the third output signal or the fourth output signal. The controller (202) is further configured to control one or more conditions inside the cabin (104) based on the selective processing of the at least one of the first output signal, the second output signal, the third output signal or the fourth output signal.