The invention discloses an energy-saving control method for concrete transportation pump, according to the status request of the construction site, and the matching relation of load pressure PL and the
engine power in central
control unit, the rotating speed ne of engine and the
oil pump current I are calculated preliminarily, the
control signal of engine speed ne is send to the
chassis engine of concrete transportation pump through central
control unit, the rotating speed is adjusted in closed-loop according the current speed feedback from
chassis engine to make the current speed n is same with the set rotating speed ne; the
chassis engine transmits the power to
oil pump through the transmission mechanism (
transfer case), the control of current I in
oil pump is completed by: the central
control unit sends signals to oil pump directly, the oil pump transmits the power of chassis engine to the
hydraulic pressure system to realize the control of concrete transportation pump working process. The invention can adjust the engine rotating speed timely and the
control mode of oil pump displacement according the requirements of actual working condition to adapt various power occasions, reduce fuel consumption and improve the operating efficiency.