Abstract: A pressure limiting valve for a fuel injection system may include a sleeve, a fixing pin, a spring, a sealing element, and a seat. The sleeve may have a longitudinal axis. The fixing pin protruding through a cavity enclosed by the sleeve. The spring may have a first end supported on the sleeve and a second end supported by the sealing element. The seat may provide a sealing surface for the sealing element to block a fluid flow through the valve when closed position, and allow this flow to pass in other positions. The outer circumference of the sleeve may vary within predefined tolerances along the longitudinal axis. The fixing pin may be shaped to plastically deform by a movement of the fixing pin along the longitudinal axis, in order to press the sleeve into the housing.

Abstract: A pressure limiting valve for a fuel injection system may include a sleeve, a fixing pin, a spring, a sealing element, and a seat. The sleeve may have a longitudinal axis. The fixing pin protruding through a cavity enclosed by the sleeve. The spring may have a first end supported on the sleeve and a second end supported by the sealing element. The seat may provide a sealing surface for the sealing element to block a fluid flow through the valve when closed position, and allow this flow to pass in other positions. The outer circumference of the sleeve may vary within predefined tolerances along the longitudinal axis. The fixing pin may be shaped to plastically deform by a movement of the fixing pin along the longitudinal axis, in order to press the sleeve into the housing.

Abstract: A pump arrangement for a motor vehicle includes a high pressure pump for delivering a fluid, which pump includes a fluid inlet, a fluid outlet, and a pressure chamber arranged hydraulically between the fluid inlet and the fluid outlet, a first pressure limiting valve having an inlet side coupled to the fluid outlet of the high pressure pump, and a second pressure limiting valve, wherein the two pressure limiting valves are connected hydraulically in parallel. Each pressure limiting valves has an opening pressure, wherein the opening pressure of the first pressure limiting valve is greater than the opening pressure of the second pressure limiting valve, and the opening pressure of the second pressure limiting valve is predefined based on an injector hydraulically coupled to the pump arrangement.