The invention further relates to a cylinder head for a high-pressure pump (1) and to a high-pressure pump (1).

Fuel is delivered by the delivery pump (10) to the intake side of the high-pressure pump (16) and fuel is delivered into a high-pressure region (18) by the high-pressure pump (16).

During a permeate production cycle, the high pressure pump pumps additional fluid under high pressure from the fluid reservoir into the pressure vessel using a high pressure pump.

A low pressure pump (15) supplies a second fluid to the high pressure pump (14).

The pump is ideally suited for use in high-pressure cleaning equipment.

The injection system has a high-pressure pump for delivering fuel at high pressure into a high-pressure region, wherein the high-pressure pump comprises an inlet valve and an electrically switched, digitally actuated outlet valve.

The low-pressure pump (12) is integrated into the drive shaft (16) of the high-pressure pump (10).

A high pressure line (14) connects the high pressure pump (10) to the fuel injector (12).

This is achieved by forming a unit with the high pressure pump and the high pressure accumulator.

The central hydraulic pressure booster (10) is disposed between the high pressure pump (14) and the high pressure accumulator (18).

Fuel is conveyed by the delivery pump (10) to the suction side of the high-pressure pump (16), and fuel is conveyed by the high-pressure pump (16) into a high-pressure area (18).

The invention concerns a high-pressure pump for pressure measurements, said pump having a modular construction.

The low pressure pump initially fills or rinses the pressure vessel and the high pressure pump operates during permeate production.

The high-pressure pump (10) comprises a drive shaft (16) which also drives the low-pressure pump (12).

The high-pressure pump and the low-pressure feed pump are in fluid connection in the recess.