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公开(公告)号：US20210148087A1
公开(公告)日：2021-05-20
申请号：US17160940
申请日：2021-01-28
发明人： Nicholas N. WHITE , James HOWLAND , Hao ZHANG , Blake CARL
摘要： A hydraulic system for recovering potential energy of a load implement of a mobile construction vehicle. The hydraulic system includes first and second actuators and control valving. The first and second actuators are configured to be coupled to the load implement for controlling raising and lowering of the load element. The control valving is operable between a first position at which, during a lowering of the load implement, the control valving directs hydraulic fluid from one of the first and second actuators to an accumulator to charge the accumulator, and a second position at which the control valving directs hydraulic fluid from the accumulator to one or more of the first and second actuators to power the one or more of the first and second actuators to raise the load element.
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公开(公告)号：US20210002864A1
公开(公告)日：2021-01-07
申请号：US17027834
申请日：2020-09-22
发明人： Nicholas N. WHITE , James HOWLAND , Hao ZHANG , Blake CARL
摘要： A hydraulic system for recovering potential energy of a load implement of a mobile construction vehicle. The hydraulic system includes first and second actuators and control valving. The first and second actuators are configured to be coupled to the load implement for controlling raising and lowering of the load element. The control valving is operable between a first position at which, during a lowering of the load implement, the control valving directs hydraulic fluid from one of the first and second actuators to an accumulator to charge the accumulator, and a second position at which the control valving directs hydraulic fluid from the accumulator to one or more of the first and second actuators to power the one or more of the first and second actuators to raise the load element.
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公开(公告)号：US20180216317A1
公开(公告)日：2018-08-02
申请号：US15747266
申请日：2016-08-15
发明人： Nicholas N. WHITE , James HOWLAND , Hao ZHANG , Blake CARL
CPC分类号： E02F9/2217 , E02F9/123 , E02F9/2225 , E02F9/2267 , E02F9/2271 , E02F9/2292 , E02F9/2296 , F15B1/024 , F15B13/021 , F15B13/06 , F15B21/14 , F15B2211/20546 , F15B2211/20576
摘要： A hydraulic system for recovering potential energy of a load implement of a mobile construction vehicle. The hydraulic system includes first and second actuators and control valving. The first and second actuators are configured to be coupled to the load implement for controlling raising and lowering of the load element. The control valving is operable between a first position at which, during a lowering of the load implement, the control valving directs hydraulic fluid from one of the first and second actuators to an accumulator to charge the accumulator, and a second position at which the control valving directs hydraulic fluid from the accumulator to one or more of the first and second actuators to power the one or more of the first and second actuators to raise the load element.
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公开(公告)号：US20190292752A1
公开(公告)日：2019-09-26
申请号：US16436954
申请日：2019-06-11
发明人： Nicholas N. WHITE , James HOWLAND , Hao ZHANG , Blake CARL
摘要： A hydraulic system for recovering potential energy of a load implement of a mobile construction vehicle. The hydraulic system includes first and second actuators and control valving. The first and second actuators are configured to be coupled to the load implement for controlling raising and lowering of the load element. The control valving is operable between a first position at which, during a lowering of the load implement, the control valving directs hydraulic fluid from one of the first and second actuators to an accumulator to charge the accumulator, and a second position at which the control valving directs hydraulic fluid from the accumulator to one or more of the first and second actuators to power the one or more of the first and second actuators to raise the load element.
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公开(公告)号：US20170129473A1
公开(公告)日：2017-05-11
申请号：US15319959
申请日：2015-06-18
发明人： Hao ZHANG , Raymond Collett , Zhesheng JIANG , Blake CARL
IPC分类号： B60W20/11
CPC分类号： B60W20/11 , B60K6/387 , B60K6/48 , B60W10/02 , B60W10/06 , B60W10/08 , B60W10/26 , B60W2300/17 , Y10S903/93 , Y10S903/946
摘要： A control system for a working machine that includes a power consumer (14) includes a prime mover (12), an energy storage unit (24) for storing energy, an auxiliary power unit (20) for generating power or consuming power, the auxiliary power unit (20) having a first connection (20a) coupled to the prime mover (12) and a second connection couplable to the energy storage unit (24). A controller (18) operatively coupled to the prime mover (12) and operatively couplable to the power consumer (14) is configured to estimate a required power of the power consumer (14), and to command the prime mover (14) to operate at an optimal operating point that produces the estimated required power. Based on a relationship between power output capability of the prime mover and power consumption of the power consumer, the controller (18) is configured to at least one of command that excess power capacity from the prime mover be provided to the auxiliary power unit for storage in the energy storage unit, or command that energy stored in the energy storage unit be provided to the auxiliary power unit to drive the power consumer.
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