Vane pumps for passenger cars

In power steering systems, a pressurised liquid (hydraulic oil) provides assistance to the steering force. The required pressure is produced by the steering pump, usually via a belt drive which is driven directly by the engine. This is where vane pumps come in.
We produce the following types of vane pump: CP 14, CP 1, FP 2, FP 4, FP 6.
Owing to their design, vane pumps have an oil flow rate which is proportional to the drive speed. As the pumps are usually driven by the engine, their speed varies depending on the driving situation. However, power steering systems require a constant flow of oil. For this reason, power steering pumps have a bypass control enabling them to provide a constant volume flow.

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Characteristics of the different types
CP 14
Standardised mounting
Belt driven
Constant, falling or stepped falling curve possible
CP 1
Modular design
Multiple mounting options
Belt driven
Constant, drooping or stepped drooping curve possible
FP 2
Standardised mounting (VDA)
Belt driven
Constant, drooping or stepped drooping characteristic possible
For low hydraulic requirements
FP 4
Standardised mounting (VDA)
Belt driven
Constant, drooping or stepped drooping characteristic possible
Energy-saving pump with ECO Valve possible
Fitted oil reservoir possible
FP 6
For higher hydraulic requirements
Standardised mounting (VDA)
Belt driven
Constant, drooping or stepped drooping characteristic possible
Energy-saving pump with ECO Valve possible
Fitted oil reservoir possible
This article comes from BOSCH Technik Leben editor released

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