A hydraulic system associated with an engine may include a hydraulic pump, a hydraulic tank, a hydraulic starter and a second pump. The hydraulic system may include a relief valve that allows hydraulic fluid to pass through the relief valve when pressure at the relief valve meets a predetermined pressure. As well, the hydraulic system may include a first solenoid valve and a second solenoid valve. The first solenoid valve may be coupled between the hydraulic pump and the second pump to thereby control fluid flow to the second pump. Additionally, the second solenoid valve may be coupled between the hydraulic pump and the hydraulic starter to thereby control fluid flow to the hydraulic starter.

A hydraulic system associated with an engine may include a hydraulic pump, a hydraulic tank, a hydraulic starter and a second pump. The hydraulic system may include a relief valve that allows hydraulic fluid to pass through the relief valve when pressure at the relief valve meets a predetermined pressure. As well, the hydraulic system may include a first solenoid valve and a second solenoid valve. The first solenoid valve may be coupled between the hydraulic pump and the second pump to thereby control fluid flow to the second pump. Additionally, the second solenoid valve may be coupled between the hydraulic pump and the hydraulic starter to thereby control fluid flow to the hydraulic starter.

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.

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.