초록 ▼

A control for a pressure fluid supply system is described, in particular for the high pressure in a fuel injection system, for example for an internal combustion Diesel engine, by means of which the pressure in a common high-pressure line supplied by a high-pressure pump, i.e. in the common rail, to

A control for a pressure fluid supply system is described, in particular for the high pressure in a fuel injection system, for example for an internal combustion Diesel engine, by means of which the pressure in a common high-pressure line supplied by a high-pressure pump, i.e. in the common rail, to which individual consumers are connected, is controlled in accordance with the instantaneous pressure fluid requirements. For adapting the pressure in the common high-pressure line to the pressure fluid requirements of the consumers, i.e. the injection nozzles, a device for limiting the amounts of fluids conveyed is associated with the high-pressure pump, which has at least on adjusting element which can be changed by means of an adjusting signal representing the instantaneous pressure fluid supply situation in the common rail. To avoid an elaborate pressure sensor device in the common rail and for the simultaneous improvement of the reaction behavior of the control, in particular when reducing the high pressure in the common rail, the adjusting signal is derived from the amount of fluid throughput in the delivery line of a pressure control valve connected to the common rail. The pre-conveying pressure or the pre-conveying amount available to the high-pressure pump is affected by means of this adjusting signal in the sense of a regulation of the pressure in the common rail.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method of controlling a pressure fluid supply system, the method which comprises:generating, with a high-pressure pump, a pressure in a common high-pressure line;providing a delivery line connected to the common high-pressure line;providing an adjustable pressure cont

[ What is claimed is:] [1.]1. A method of controlling a pressure fluid supply system, the method which comprises:generating, with a high-pressure pump, a pressure in a common high-pressure line;providing a delivery line connected to the common high-pressure line;providing an adjustable pressure control valve in the delivery line for controlling a fluid throughput in the delivery line;determining a motion value of the adjustable pressure control valve in accordance with the fluid throughput in the delivery line;providing, upstream of the high pressure pump, a fluid conveyance limiting device for adjusting the pressure in the common high-pressure line in accordance with a pressure fluid requirement of consumers connected to the high-pressure line;providing an actuating element for controlling the fluid conveyance limiting device;deriving, from the motion value of the adjustable pressure control valve, an adjusting signal representing a current pressure fluid supply situation in the common high-pressure line; andcontrolling the actuating element with the adjusting signal.