Transmission shaft brake for engine auto restart
AssigneeEku Power Drives Inc.
InventorLothar Bloschies
Life of this patent
Estimating the term…
Abstract
A system and method for controlling a hydraulic fracturing pumping system is described herein. The method can include stopping an engine coupled to a hydraulic fracturing pumping system including at least one pump by supplying pressure from an accumulator to a hydraulic braking system including a brake. The method can also include starting the engine coupled to the hydraulic fracturing pumping system and releasing the brake.
Claims20
A method for controlling a hydraulic fracturing pumping system, comprising:
- stopping an engine coupled to the hydraulic fracturing pumping system;
- supplying pressure from an accumulator to a hydraulic braking system upon input from a brake signal that opens a three-way solenoid valve in fluid communication with the accumulator to allow transfer of transmission oil from the accumulator to brake under a pressure sufficient to actuate a brake of the hydraulic braking system;
- starting the engine coupled to the hydraulic fracturing pumping system comprising at least one pump;
- and
- releasing the brake.
A hydraulic fracturing pumping system, comprising:
- a first pump coupled to an engine via a transmission, wherein the transmission is coupled to a transmission oil reservoir;
- a second pump coupled to the transmission;
- an accumulator device coupled to the hydraulic pump, the accumulator device comprising:
- an accumulator:
- a pressure sensor a safety block;
- and
- a check valve;
- and
- a hydraulic brake system coupled to the accumulator device, the hydraulic brake system comprising a three-way solenoid valve in fluid communication with the accumulator, the transmission oil reservoir, and a brake.
A hydraulic fracturing pumping system disposed on a trailer, the hydraulic fracturing pumping system comprising:
- a diesel engine;
- a transmission;
- a hydraulic pump coupled to the transmission;
- a transmission oil reservoir coupled to the transmission;
- a reciprocating plunger pump;
- a shaft mechanically linking the transmission to the reciprocating plunger pump;
- an accumulator device in fluid communication with the hydraulic pump, the accumulator device comprising:
- an accumulator:
- a pressure sensor:
- a safety block;
- and
- a check valve;
- and
- a hydraulic brake system coupled to the accumulator, the hydraulic brake system comprising a three-way solenoid valve.
Dependencies are inferred from the claim text.