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Motor vehicle lubrication pump system with two-piece safety valve

一种润滑泵、机动车辆的技术，应用在润滑泵系统领域，能够解决润滑系统增加复杂性和成本等问题

Active Publication Date: 2019-12-10
SLPT GLOBAL PUMP GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, variable displacement pumps generally add more complexity and cost to the lubrication system, not only for the pump, but also for other valves and hydraulic components associated with the system

Method used

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  • Motor vehicle lubrication pump system with two-piece safety valve
  • Motor vehicle lubrication pump system with two-piece safety valve
  • Motor vehicle lubrication pump system with two-piece safety valve

Examples

Experimental program
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Embodiment Construction

[0016] The preferred embodiments described below are merely exemplary in nature and are not intended to limit the invention, its application or uses.

[0017] Figure 1-7 , shows the lubrication pump system 7 of the present invention. The pump system 7 is used for lubricating an internal combustion engine 10 of a motor vehicle, generally an engine 10 of the reciprocating piston type. System 7 has an oil pump 12 . The pump 12 is typically a fixed displacement rotor type pump with non-concentric rotors 13 , 15 . Pump 12 is typically torsionally coupled to a crankshaft (not shown) of engine 10 via a belt or gear set. A typical pump 12 is used in a small, medium, large passenger car or small truck motor vehicle and has an output capacity of 20-120 liters per minute at 1.0-6.0 bar pressure when the crankshaft of the engine 10 is rotating at 700-7000 revolutions per minute . Pump 12 has an inlet 16 and a discharge or outlet 18 . Inlet 16 is fluidly connected to sump 20 . The ...

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Abstract

A lubrication pump system for an oil-lubricated engine of a motor vehicle is provided, including a pump with an outlet and an inlet. A safety valve is configured having a housing with a multi-dimensional bore having a first diameter portion axially intersecting a second distinct diameter portion. A spring-biased main piston is slidably mounted in the first portion, with a first bridge, metering flow between the pump outlet port and the pump inlet port. The secondary piston is disposed in a second distinct diameter portion of the valve housing bore. The inventive system allows multiple operating modes of oil pressure versus engine speed by controlling pilot pressure, thereby minimizing the parasitic load imposed by the oil pump on the vehicle engine.

Description

[0001] CROSS REFERENCE TO RELATED APPLICATIONS: This application claims priority to US Provisional Application No. 62 / 294,062, filed February 11, 2016. The disclosure of the above application is incorporated herein by reference. technical field [0002] The invention relates to a lubricating pump system for an engine of a motor vehicle, in particular a motor vehicle having an engine of the alternating piston type. Background technique [0003] In the field of fluid pumps for vehicles, especially oil pumps, there is a need to control the amount of oil flowing through an oil circuit. Controlling flow can have many advantages, not least fuel economy. For example, when the vehicle accelerates the pump, since the pump operates at a greater speed, it may cause an unnecessary increase in oil pressure which results in an increased power load on the engine crankshaft. When the vehicle is moving at a slow speed, a certain pump displacement is required in the circuit to generate the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16N13/20
CPCF16N13/20F16N2210/04F16K31/1225F01M1/16F01M2001/0238F01M2001/0269F16K31/1221F16K31/1245F01M1/02F01M11/0004
Inventor L·V·沃德E·爱德华
Owner SLPT GLOBAL PUMP GRP