US20020172604A1 - Variable pressure oil pump - Google Patents
Variable pressure oil pump Download PDFInfo
- Publication number
- US20020172604A1 US20020172604A1 US09/681,659 US68165901A US2002172604A1 US 20020172604 A1 US20020172604 A1 US 20020172604A1 US 68165901 A US68165901 A US 68165901A US 2002172604 A1 US2002172604 A1 US 2002172604A1
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- United States
- Prior art keywords
- plunger
- oil
- inlet
- aperture
- adjustment mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
- F04B49/03—Stopping, starting, unloading or idling control by means of valves
- F04B49/035—Bypassing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/16—Controlling lubricant pressure or quantity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/18—Lubricating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/02—Pressure lubrication using lubricating pumps
- F01M2001/0207—Pressure lubrication using lubricating pumps characterised by the type of pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2205/00—Fluid parameters
- F04B2205/05—Pressure after the pump outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2205/00—Fluid parameters
- F04B2205/11—Outlet temperature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7876—With external means for opposing bias
Definitions
- the invention relates to a variable pressure oil pump for use with an engine, such as an internal combustion engine of a motor vehicle.
- a typical motor vehicle includes an internal combustion engine and a lubrication system for providing oil to various lubrication locations of the engine.
- Such lubrication locations include sleeve bearings that support a rotating shaft, such as a camshaft.
- the oil produces a viscous friction drag on the rotating shaft, and the frictional drag converts mechanical energy from the shaft into heat energy within the oil.
- the bearings are continually provided pressurized, lower temperature oil from an oil pump of the lubrication system. The pressurized, lower temperature oil is forced into the bearings and displaces heated oil out of the bearings.
- the present invention addresses the shortcomings of the prior art by providing a variable pressure oil pump assembly that can vary outlet oil pressure based on one or more operating conditions. Furthermore, outlet oil pressure may be varied without diverting high pressure oil into an oil sump.
- the assembly further includes a pressure relief valve subassembly having a movable plunger that is disposed at least partially in the valve chamber for controlling flow of oil through the valve chamber so as to control outlet oil pressure at the outlet.
- a plunger adjustment mechanism is associated with the valve subassembly and adapted to communicate with the controller. The plunger adjustment mechanism is operable to control movement of the plunger based on control signals provided by the controller.
- the plunger adjustment mechanism may be any suitable mechanism that is configured to affect movement of the plunger.
- the plunger adjustment mechanism may include a solenoid subassembly connected to the pump body and adapted to be electrically connected to the controller. With such a configuration, when the solenoid subassembly is energized, the solenoid subassembly draws the plunger toward an open position for allowing oil to flow through the valve chamber.
- the plunger has an enlarged head having first and second sides
- the plunger adjustment mechanism includes a housing connected to the pump body and defining a housing chamber that receives the enlarged head. Furthermore, the housing including first and second apertures. The first aperture is in fluid communication with the first side of the enlarged head. The second aperture is in fluid communication with the second side of the enlarged head and is further connected to the inlet.
- the plunger adjustment mechanism includes a solenoid valve adapted to be electrically connected to the controller and further connected to the first aperture, the inlet and the outlet. When the solenoid valve is energized, the first aperture is exposed to the outlet oil pressure. When the solenoid valve is de-energized, the first aperture is exposed to inlet oil pressure.
- the plunger has an enlarged head having first and second sides
- the plunger adjustment mechanism includes a housing connected to the pump body and defining a housing chamber that receives the enlarged head.
- the housing includes first and second apertures.
- the first aperture is in fluid communication with the first side of the enlarged head.
- the second aperture is in fluid communication with the second side of the enlarged head and is further connected to the inlet so as to expose the second side of the enlarged head to inlet oil pressure.
- the plunger adjustment mechanism includes an additional pump connected between the first aperture and the inlet and adapted to be electrically connected to the controller. When the additional pump is not activated, the additional pump provides the inlet oil pressure to the first aperture. When the additional pump is activated, the additional pump provides oil pressure to the first aperture that is greater than the inlet oil pressure.
- FIG. 1 is a schematic diagram of an engine that incorporates a lubrication system according to the invention, wherein the lubrication system includes an oil pump assembly that provides pressurized oil to lubrication locations of the engine;
- FIG. 2 is a enlarged fragmentary view of the oil pump assembly showing a plunger of the oil pump assembly in a seated position;
- FIG. 3 is a enlarged fragmentary view of the oil pump assembly showing the plunger in an open position
- FIG. 4 is a schematic view of a second embodiment of the oil pump assembly showing a plunger of the oil pump assembly in a seated position
- FIG. 5 is a schematic view of the second embodiment of the oil pump assembly showing the plunger in an open position
- FIG. 6 is a schematic view of a third embodiment of the oil pump assembly showing a plunger of the oil pump assembly in a seated position
- FIG. 7 is a schematic view of the third embodiment of the oil pump assembly showing the plunger in an open position.
- FIG. 1 shows an automotive internal combustion engine 10 that incorporates a lubrication system 12 according to the invention.
- the lubrication system 12 includes an oil sump or pan 14 and a suction pipe 16 that routes oil from the oil pan 14 to an oil pump assembly 18 .
- the oil pump assembly 18 provides pressurized oil to a discharge pipe 19 , which leads to an oil filter 20 .
- An oil passage such as a main gallery 22 leads from the filter 20 to a crankshaft 24 and a camshaft 26 of the engine 10 .
- Internal passages (not shown) through the crankshaft 24 provide oil to crankshaft bearings 27 and connecting rod bearings 28 .
- internal passages (not shown) through the camshaft 26 provide oil to camshaft bearings 30 .
- Gravity drains 32 return the oil to the oil pan 14 .
- the lubrication system 1 2 also includes an electronic controller, such as electronic control unit 34 , that is connected to the oil pump assembly 18 .
- the oil pump assembly 18 includes a pump body 36 and a pump element 38 disposed in the pump body 36 for pressurizing the oil.
- the pump body 36 has an inlet 40 connected to the suction pipe 16 , and an outlet 42 connected to the discharge pipe 19 .
- the pump body 36 further includes a valve chamber 44 , a first or low pressure passage arrangement 46 in fluid communication with the valve chamber 44 , and a second or high pressure passage arrangement 48 .
- the first passage arrangement 46 includes a first passage 50 disposed between the inlet 40 and the valve chamber 44 , and an inlet passage 51 extending between the inlet 40 and the pump element 38 .
- the second passage arrangement 48 includes a second passage 52 extending between the outlet 42 and the valve chamber 44 , and an outlet passage 53 extending between the pump element 38 and the outlet 42 .
- the pump body 36 includes a connector passage 54 extending between the valve chamber 44 and the first passage 50 .
- the oil pump assembly 18 further includes a relief valve subassembly 55 and a plunger adjustment mechanism 56 associated with the valve subassembly 55 .
- the valve subassembly 55 includes a piston or plunger 58 that is disposed at least partially in the valve chamber 44 .
- the plunger 58 is movable between a seated position, shown in FIG. 2, and an open position shown in FIG. 3.
- the plunger 58 includes a plunger body 59 and a head 60 connected to the plunger body 59 .
- a passage may also be provided through the head 60 to allow oil and/or air that is displaced by head 60 to flow from one side of the head 60 to the other side of the head 60 .
- the plunger 58 may comprise any suitable material, in the embodiment shown in FIG. 2 and 3 , the plunger body 59 comprises steel, and the head 60 comprises iron.
- the valve subassembly 55 also includes a spring 61 that biases the plunger 58 toward the seated position.
- the plunger 58 is movable against the bias of the spring 61 when a sufficient pressure differential exists between the second passage 52 and the first passage 50 .
- the plunger 58 is movable against the bias of the spring 61 when the plunger adjustment mechanism 56 is activated as described below in detail.
- the plunger adjustment mechanism 56 is a solenoid subassembly that includes a housing 62 and a solenoid winding 63 attached to the housing 62 . Furthermore, the solenoid winding 63 is electrically connected to the electronic control unit 34 .
- the solenoid winding 63 When the solenoid winding 63 is de-energized, the plunger 58 moves between the seated position and the open position based on the pressure differential existing between the first and second passages 50 and 52 , respectively.
- the solenoid winding 63 is energized, the head 60 of the plunger 58 is drawn toward the solenoid winding 63 , thereby causing the plunger 58 to move toward the open position shown in FIG. 3.
- plunger adjustment mechanism 56 may provide a force that acts on plunger 58 , in addition to the force created by the pressure differential between the passages 50 and 52 , to move the plunger 58 against the bias of the spring 61 toward the open position.
- the plunger adjustment mechanism 56 may be any suitable mechanism that is configured to affect movement of the plunger 58 .
- the electronic control unit 34 is in communication with a plurality of sensors, such as oil pressure sensor 64 , oil temperature sensors 66 and 67 , engine load sensor 68 , engine speed sensor 70 , coolant temperature sensor 72 , and oil viscosity sensor 73 . Based on input received from the sensors 64 - 73 , the electronic control unit 34 generates appropriate control signals for controlling operation of the plunger adjustment mechanism 56 .
- sensors such as oil pressure sensor 64 , oil temperature sensors 66 and 67 , engine load sensor 68 , engine speed sensor 70 , coolant temperature sensor 72 , and oil viscosity sensor 73 .
- Electronic control unit 34 may be provided as part of oil pump assembly 18 .
- electronic control unit 34 may be mounted on or proximate to pump body 36 .
- electronic control unit 34 may be provided as a separate component from oil pump assembly 18 .
- electronic control unit 34 may be an engine controller that is mounted on or proximate to engine block 74 of engine 10 . With such a configuration, electronic control unit 34 may be used to control other components of engine 10 , such as a fuel supply system (not shown) and/or a coolant system (not shown).
- bearings 27 , 28 and 30 are typically designed to have a leakage rate that will allow an adequate amount of oil to flow through the bearings 27 , 28 and 30 to maintain a non-damaging temperature under the most severe operating conditions. Under normal operating conditions, however, this flow of oil may cause the bearings 27 , 28 and 30 to operate at lower temperatures than necessary. These lower temperatures may result in more fuel consuming friction between the bearings 27 , 28 and 30 and the oil.
- the lubrication system 12 is able to adjust oil pressure under such operating conditions, as well as other operating conditions, so as to vary the amount of oil flowing through the bearings 27 , 28 and 30 .
- the electronic control unit 34 continually receives input from the sensors 64 - 73 so as to monitor engine operating conditions. Based on these operating conditions, the electronic control unit 34 determines desired oil pressure for the lubrication system 12 . The electronic control unit 34 then generates appropriate control signals for controlling operation of the plunger adjustment mechanism 56 so as to regulate oil pressure.
- the electronic control unit 34 may energize the solenoid winding 63 so as to move the plunger 58 toward the open position shown in FIG. 3.
- high pressure oil will flow from the second passage 52 to the first passage 50 , thereby reducing outlet oil pressure at outlet 42 .
- the electronic control unit 34 may de-energize solenoid winding 63 . Consequently, the plunger 58 will move between the seated and open positions based on the pressure differential between the passages 50 and 52 only.
- the electronic control unit 34 may also generate appropriate control signals to achieve a desired duty cycle for the solenoid winding 63 .
- the clearance between the head 60 and the housing 62 may be appropriately designed to achieve a damping effect as the plunger 58 moves between the seated and open positions.
- the plunger 58 may maintain an intermediate position between the seated and open positions, or intermediate range of positions between the seated and open positions, for a particular duty cycle.
- the intermediate position or intermediate range of positions of the plunger 58 may be varied so as to provide desired oil pressure to the bearings 27 , 28 and 30 .
- measurements may be taken with the various sensors 64 - 73 , and the electronic control unit 34 may calculate an inferred oil film thickness within the bearings 27 , 28 and 30 based on the measurements. If the inferred oil film thickness is too low or too high for the particular engine speed and/or engine load, then the duty cycle for the solenoid winding 63 may be adjusted so as to increase or decrease oil pressure provided to the bearings 27 , 28 and 30 .
- the pump element 38 consumes mechanical energy so as to increase pressure of the oil.
- the pump element 38 may be driven either directly or indirectly by the crankshaft 24 , or by other suitable means.
- Part of the mechanical energy is converted to thermal energy within the oil due to such factors as friction and shearing of the oil.
- the rest of the mechanical energy is converted into hydraulic energy (oil pressure increase times the volume of oil pumped).
- this hydraulic energy is converted into thermal energy.
- the lubrication system 12 also provides several other advantages. First, because high pressure oil is not returned to the oil pan 14 , potential aeration of the oil in the oil pan 14 is inhibited. Second, if the plunger mechanism 56 fails for any reason, the plunger 58 can still move between the seated and open positions based on the pressure differential between the passages 50 and 52 .
- FIGS. 4 and 5 show a second embodiment 110 of the oil pump assembly.
- the oil pump assembly 110 includes a pump body 112 , a pressure relief valve subassembly 114 and a plunger adjustment mechanism 116 .
- the pump body 112 is similar to the pump body 36 of the oil pump assembly 10 . Consequently, similar elements common to both the pump body 112 and the pump body 36 have been given the same reference numerals.
- the pump body 112 may be provided without connector passage 54 of pump body 36 .
- the valve subassembly 114 is similar to the valve subassembly 55 , and includes a plunger 118 and spring 61 .
- the plunger 118 has a plunger body 121 and an enlarged portion, such as head 122 , having a first side 124 and a second side 126 .
- the plunger 118 is movable between a seated position shown in FIG. 4, and an open position shown in FIG. 5.
- the plunger adjustment mechanism 116 includes a housing 128 that is connected to the pump body 112 and defines a housing chamber 130 for receiving the head 122 .
- the housing 128 forms a seal with the outer perimeter of the enlarged head 122 .
- the housing 128 further includes first and second apertures 132 and 134 , respectively.
- the first aperture 132 is in fluid communication with the first side 124 of the enlarged head 122
- the second aperture 134 is in fluid communication with the second side 126 of the enlarged head 122 .
- the second aperture 134 is also connected to inlet 40 of pump body 112 .
- the plunger adjustment mechanism 116 also includes a suitable valve, such as solenoid valve 136 , that is mounted on the pump body 112 and is connected to electronic control unit 34 .
- a suitable valve such as solenoid valve 136
- the solenoid valve 136 may be spaced away from the pump body 112 .
- the solenoid valve 136 has first and second inlet ports 138 and 140 , respectively, and an outlet port 142 .
- the first inlet port 138 is connected to inlet 40 of pump body 112
- the second inlet port 140 is connected to the outlet 42 of pump body 112
- the outlet port 142 is connected to the first aperture 132 .
- plunger adjustment mechanism 116 may provide a force that acts on plunger 118 , in addition to the force created by the pressure differential between the passages 50 and 52 , to move the plunger 118 against the bias of the spring 61 toward the open position.
- duty cycle of the solenoid valve 136 may be adjusted, in a similar manner as described above, so as to achieve a desired intermediate position between the seated and open positions, or intermediate range of positions between the seated and open positions, for the plunger 118 .
- FIGS. 6 and 7 show a third embodiment 210 of the oil pump assembly.
- the oil pump assembly 210 includes pump body 112 and relief valve subassembly 114 of the oil pump assembly 110 , and further includes a plunger adjustment mechanism 212 .
- the plunger adjustment mechanism 212 is similar to the plunger adjustment mechanism 116 , and includes housing 128 .
- the plunger adjustment mechanism 212 further includes an additional pump 214 having an inlet 216 connected to inlet 40 of pump body 112 , and an outlet 218 connected to first aperture 132 of the housing 128 .
- the additional pump 214 is also connected to electronic control unit 34 .
- the additional pump 214 may be mounted on the pump body 112 , as shown in FIG. 6, or the additional pump 214 may be spaced away from the pump body 112 .
- inlet oil pressure is provided to the first aperture 132 .
- plunger 118 moves between a seated position, shown in FIG. 6, and an open position, shown in FIG. 7, based on the pressure differential between passages 50 and 52 .
- the additional pump 214 is activated by electronic control unit 34 , the additional pump 214 provides oil pressure to the first aperture 132 that is higher than inlet oil pressure. As a result, the piston 118 is urged toward the open position shown in FIG. 7.
- plunger adjustment mechanism 212 may provide a force that acts on plunger 118 , in addition to the force created by the pressure differential between the passages 50 and 52 , to move the plunger 118 against the bias of the spring 61 toward the open position. Furthermore, duty cycle of the additional pump 214 may be adjusted, in a similar manner as described above, so as to achieve a desired intermediate position between the seated and open positions, or intermediate range of positions between the seated and open positions, for the plunger 118 .
- the electronic control unit 34 provides necessary power for controlling operation of the plunger adjustment mechanism 56 , 116 or 212 .
- an additional power source (not shown) may be connected to the plunger adjustment mechanism 56 , 116 , or 212 , such as between the electronic control unit 34 and the plunger adjustment mechanism 56 , 116 or 212 .
Abstract
Description
- The invention relates to a variable pressure oil pump for use with an engine, such as an internal combustion engine of a motor vehicle.
- A typical motor vehicle includes an internal combustion engine and a lubrication system for providing oil to various lubrication locations of the engine. Such lubrication locations include sleeve bearings that support a rotating shaft, such as a camshaft. The oil produces a viscous friction drag on the rotating shaft, and the frictional drag converts mechanical energy from the shaft into heat energy within the oil. To prevent the oil from overheating within the bearings, the bearings are continually provided pressurized, lower temperature oil from an oil pump of the lubrication system. The pressurized, lower temperature oil is forced into the bearings and displaces heated oil out of the bearings.
- When the engine is cold, such as during a cold start, however, the oil in the bearings is cold and the viscosity of the oil is high. As a result, it is not desirable to replace this oil with pressurized, low temperature oil.
- Systems have been developed to vary oil pressure of oil provided to bearings of an internal combustion engine. U.S. Pat. No. 5,339,776, for example, discloses a lubrication system that includes an oil pump that draws oil from an oil sump, and a bypass valve that is capable of diverting oil supplied by the oil pump back into the oil sump without routing the oil to the bearings. Because high pressure oil is dumped back into the sump, however, aeration of the oil may occur. Furthermore, the oil dumped back into the sump will likely experience significant heat loss.
- The present invention addresses the shortcomings of the prior art by providing a variable pressure oil pump assembly that can vary outlet oil pressure based on one or more operating conditions. Furthermore, outlet oil pressure may be varied without diverting high pressure oil into an oil sump.
- Under the invention, a variable pressure oil pump assembly for use with a vehicle having a controller includes a pump body having an inlet, an outlet, a valve chamber, a first passage disposed between the inlet and the valve chamber, and a second passage disposed between the outlet and the valve chamber. The assembly further includes a pressure relief valve subassembly having a movable plunger that is disposed at least partially in the valve chamber for controlling flow of oil through the valve chamber so as to control outlet oil pressure at the outlet. A plunger adjustment mechanism is associated with the valve subassembly and adapted to communicate with the controller. The plunger adjustment mechanism is operable to control movement of the plunger based on control signals provided by the controller.
- The plunger adjustment mechanism may be any suitable mechanism that is configured to affect movement of the plunger. For example, the plunger adjustment mechanism may include a solenoid subassembly connected to the pump body and adapted to be electrically connected to the controller. With such a configuration, when the solenoid subassembly is energized, the solenoid subassembly draws the plunger toward an open position for allowing oil to flow through the valve chamber.
- In another embodiment of the invention, the plunger has an enlarged head having first and second sides, and the plunger adjustment mechanism includes a housing connected to the pump body and defining a housing chamber that receives the enlarged head. Furthermore, the housing including first and second apertures. The first aperture is in fluid communication with the first side of the enlarged head. The second aperture is in fluid communication with the second side of the enlarged head and is further connected to the inlet. In addition, the plunger adjustment mechanism includes a solenoid valve adapted to be electrically connected to the controller and further connected to the first aperture, the inlet and the outlet. When the solenoid valve is energized, the first aperture is exposed to the outlet oil pressure. When the solenoid valve is de-energized, the first aperture is exposed to inlet oil pressure.
- In yet another embodiment of the invention, the plunger has an enlarged head having first and second sides, and the plunger adjustment mechanism includes a housing connected to the pump body and defining a housing chamber that receives the enlarged head. Furthermore, the housing includes first and second apertures. The first aperture is in fluid communication with the first side of the enlarged head. The second aperture is in fluid communication with the second side of the enlarged head and is further connected to the inlet so as to expose the second side of the enlarged head to inlet oil pressure. In addition, the plunger adjustment mechanism includes an additional pump connected between the first aperture and the inlet and adapted to be electrically connected to the controller. When the additional pump is not activated, the additional pump provides the inlet oil pressure to the first aperture. When the additional pump is activated, the additional pump provides oil pressure to the first aperture that is greater than the inlet oil pressure.
- These and other objects, features, and advantages of the present invention are readily apparent from the following detailed description of the preferred embodiments when taken in connection with the accompanying drawings.
- FIG. 1 is a schematic diagram of an engine that incorporates a lubrication system according to the invention, wherein the lubrication system includes an oil pump assembly that provides pressurized oil to lubrication locations of the engine;
- FIG. 2 is a enlarged fragmentary view of the oil pump assembly showing a plunger of the oil pump assembly in a seated position;
- FIG. 3 is a enlarged fragmentary view of the oil pump assembly showing the plunger in an open position;
- FIG. 4 is a schematic view of a second embodiment of the oil pump assembly showing a plunger of the oil pump assembly in a seated position;
- FIG. 5 is a schematic view of the second embodiment of the oil pump assembly showing the plunger in an open position;
- FIG. 6 is a schematic view of a third embodiment of the oil pump assembly showing a plunger of the oil pump assembly in a seated position; and
- FIG. 7 is a schematic view of the third embodiment of the oil pump assembly showing the plunger in an open position.
- FIG. 1 shows an automotive
internal combustion engine 10 that incorporates alubrication system 12 according to the invention. Thelubrication system 12 includes an oil sump orpan 14 and asuction pipe 16 that routes oil from theoil pan 14 to anoil pump assembly 18. Theoil pump assembly 18 provides pressurized oil to adischarge pipe 19, which leads to anoil filter 20. An oil passage such as amain gallery 22 leads from thefilter 20 to acrankshaft 24 and acamshaft 26 of theengine 10. Internal passages (not shown) through thecrankshaft 24 provide oil tocrankshaft bearings 27 and connectingrod bearings 28. Similarly, internal passages (not shown) through thecamshaft 26 provide oil tocamshaft bearings 30. Gravity drains 32 return the oil to theoil pan 14. The lubrication system 1 2 also includes an electronic controller, such aselectronic control unit 34, that is connected to theoil pump assembly 18. - Referring to FIGS. 1 through 3, the
oil pump assembly 18 includes apump body 36 and apump element 38 disposed in thepump body 36 for pressurizing the oil. Thepump body 36 has aninlet 40 connected to thesuction pipe 16, and anoutlet 42 connected to thedischarge pipe 19. Thepump body 36 further includes avalve chamber 44, a first or lowpressure passage arrangement 46 in fluid communication with thevalve chamber 44, and a second or highpressure passage arrangement 48. Thefirst passage arrangement 46 includes afirst passage 50 disposed between theinlet 40 and thevalve chamber 44, and aninlet passage 51 extending between theinlet 40 and thepump element 38. Thesecond passage arrangement 48 includes asecond passage 52 extending between theoutlet 42 and thevalve chamber 44, and anoutlet passage 53 extending between thepump element 38 and theoutlet 42. In addition, thepump body 36 includes aconnector passage 54 extending between thevalve chamber 44 and thefirst passage 50. - The
oil pump assembly 18 further includes a relief valve subassembly 55 and aplunger adjustment mechanism 56 associated with thevalve subassembly 55. Thevalve subassembly 55 includes a piston orplunger 58 that is disposed at least partially in thevalve chamber 44. Theplunger 58 is movable between a seated position, shown in FIG. 2, and an open position shown in FIG. 3. Theplunger 58 includes aplunger body 59 and ahead 60 connected to theplunger body 59. A passage (not shown) may also be provided through thehead 60 to allow oil and/or air that is displaced byhead 60 to flow from one side of thehead 60 to the other side of thehead 60. While theplunger 58 may comprise any suitable material, in the embodiment shown in FIG. 2 and 3, theplunger body 59 comprises steel, and thehead 60 comprises iron. - The
valve subassembly 55 also includes aspring 61 that biases theplunger 58 toward the seated position. Theplunger 58 is movable against the bias of thespring 61 when a sufficient pressure differential exists between thesecond passage 52 and thefirst passage 50. Furthermore, theplunger 58 is movable against the bias of thespring 61 when theplunger adjustment mechanism 56 is activated as described below in detail. - In the embodiment shown in FIGS. 1 through 3, the
plunger adjustment mechanism 56 is a solenoid subassembly that includes ahousing 62 and a solenoid winding 63 attached to thehousing 62. Furthermore, the solenoid winding 63 is electrically connected to theelectronic control unit 34. When the solenoid winding 63 is de-energized, theplunger 58 moves between the seated position and the open position based on the pressure differential existing between the first andsecond passages head 60 of theplunger 58 is drawn toward the solenoid winding 63, thereby causing theplunger 58 to move toward the open position shown in FIG. 3. Thus,plunger adjustment mechanism 56 may provide a force that acts onplunger 58, in addition to the force created by the pressure differential between thepassages plunger 58 against the bias of thespring 61 toward the open position. Alternatively, theplunger adjustment mechanism 56 may be any suitable mechanism that is configured to affect movement of theplunger 58. - Referring to FIG. 1, the
electronic control unit 34 is in communication with a plurality of sensors, such asoil pressure sensor 64,oil temperature sensors engine load sensor 68,engine speed sensor 70,coolant temperature sensor 72, andoil viscosity sensor 73. Based on input received from the sensors 64-73, theelectronic control unit 34 generates appropriate control signals for controlling operation of theplunger adjustment mechanism 56. -
Electronic control unit 34 may be provided as part ofoil pump assembly 18. For example,electronic control unit 34 may be mounted on or proximate to pumpbody 36. Alternatively,electronic control unit 34 may be provided as a separate component fromoil pump assembly 18. For example,electronic control unit 34 may be an engine controller that is mounted on or proximate toengine block 74 ofengine 10. With such a configuration,electronic control unit 34 may be used to control other components ofengine 10, such as a fuel supply system (not shown) and/or a coolant system (not shown). - Referring to FIGS. 1 through 3, operation of
engine 10 havinglubrication system 12 will now be described in detail. It is understood thatbearings bearings bearings bearings lubrication system 12 is able to adjust oil pressure under such operating conditions, as well as other operating conditions, so as to vary the amount of oil flowing through thebearings - The
electronic control unit 34 continually receives input from the sensors 64-73 so as to monitor engine operating conditions. Based on these operating conditions, theelectronic control unit 34 determines desired oil pressure for thelubrication system 12. Theelectronic control unit 34 then generates appropriate control signals for controlling operation of theplunger adjustment mechanism 56 so as to regulate oil pressure. - For example, under low engine load conditions such as normal operating conditions and/or startup conditions, the
electronic control unit 34 may energize the solenoid winding 63 so as to move theplunger 58 toward the open position shown in FIG. 3. As a result, high pressure oil will flow from thesecond passage 52 to thefirst passage 50, thereby reducing outlet oil pressure atoutlet 42. - As another example, as engine loads increase above a predetermined level, the
electronic control unit 34 may de-energize solenoid winding 63. Consequently, theplunger 58 will move between the seated and open positions based on the pressure differential between thepassages - The
electronic control unit 34 may also generate appropriate control signals to achieve a desired duty cycle for the solenoid winding 63. Moreover, the clearance between thehead 60 and thehousing 62 may be appropriately designed to achieve a damping effect as theplunger 58 moves between the seated and open positions. With such a configuration, theplunger 58 may maintain an intermediate position between the seated and open positions, or intermediate range of positions between the seated and open positions, for a particular duty cycle. Furthermore, by varying the duty cycle, the intermediate position or intermediate range of positions of theplunger 58 may be varied so as to provide desired oil pressure to thebearings - For example, at periodic intervals, measurements may be taken with the various sensors64-73, and the
electronic control unit 34 may calculate an inferred oil film thickness within thebearings bearings - As oil passes through the
oil pump assembly 18, thepump element 38 consumes mechanical energy so as to increase pressure of the oil. For example, thepump element 38 may be driven either directly or indirectly by thecrankshaft 24, or by other suitable means. Part of the mechanical energy is converted to thermal energy within the oil due to such factors as friction and shearing of the oil. The rest of the mechanical energy is converted into hydraulic energy (oil pressure increase times the volume of oil pumped). When the pressure of the oil eventually drops, such as within thebearings relief valve subassembly 55, this hydraulic energy is converted into thermal energy. Thus, virtually all of the mechanical energy consumed by thepump element 38 is converted into thermal energy within the oil. - When the
relief valve subassembly 55 allows high pressure, high temperature oil to be passed directly fromsecond passage 52 tofirst passage 50, the temperature of the oil on the inlet side ofpump element 38 is increased. Consequently oil entering thepump element 38 has reduced viscosity, which results in improved efficiency of theoil pump assembly 18. Moreover, the temperature of oil exiting theoil pump assembly 18 is increased, and, as a result, viscous friction within thebearings - The
lubrication system 12 also provides several other advantages. First, because high pressure oil is not returned to theoil pan 14, potential aeration of the oil in theoil pan 14 is inhibited. Second, if theplunger mechanism 56 fails for any reason, theplunger 58 can still move between the seated and open positions based on the pressure differential between thepassages - FIGS. 4 and 5 show a
second embodiment 110 of the oil pump assembly. Theoil pump assembly 110 includes apump body 112, a pressurerelief valve subassembly 114 and aplunger adjustment mechanism 116. Thepump body 112 is similar to thepump body 36 of theoil pump assembly 10. Consequently, similar elements common to both thepump body 112 and thepump body 36 have been given the same reference numerals. Thepump body 112, however, may be provided withoutconnector passage 54 ofpump body 36. - The
valve subassembly 114 is similar to thevalve subassembly 55, and includes aplunger 118 andspring 61. Theplunger 118 has aplunger body 121 and an enlarged portion, such ashead 122, having afirst side 124 and asecond side 126. Theplunger 118 is movable between a seated position shown in FIG. 4, and an open position shown in FIG. 5. - The
plunger adjustment mechanism 116 includes ahousing 128 that is connected to thepump body 112 and defines ahousing chamber 130 for receiving thehead 122. Preferably, thehousing 128 forms a seal with the outer perimeter of theenlarged head 122. Thehousing 128 further includes first andsecond apertures first aperture 132 is in fluid communication with thefirst side 124 of theenlarged head 122, and thesecond aperture 134 is in fluid communication with thesecond side 126 of theenlarged head 122. Thesecond aperture 134 is also connected toinlet 40 ofpump body 112. - The
plunger adjustment mechanism 116 also includes a suitable valve, such assolenoid valve 136, that is mounted on thepump body 112 and is connected toelectronic control unit 34. Alternatively, thesolenoid valve 136 may be spaced away from thepump body 112. - The
solenoid valve 136 has first andsecond inlet ports outlet port 142. Thefirst inlet port 138 is connected toinlet 40 ofpump body 112, thesecond inlet port 140 is connected to theoutlet 42 ofpump body 112, and theoutlet port 142 is connected to thefirst aperture 132. When thesolenoid valve 136 is de-energized, bothsides enlarged head 122 are exposed to the same pressure. As a result, theplunger adjustment mechanism 116 exerts no net force on theplunger 118, and theplunger 118 moves between the seated and open positions based on the pressure differential between thepassages solenoid valve 136 is energized byelectronic control unit 34, outlet oil pressure is provided to thefirst aperture 132, thereby urging theplunger 118 toward the open position shown in FIG. 5. Thus,plunger adjustment mechanism 116 may provide a force that acts onplunger 118, in addition to the force created by the pressure differential between thepassages plunger 118 against the bias of thespring 61 toward the open position. Furthermore, duty cycle of thesolenoid valve 136 may be adjusted, in a similar manner as described above, so as to achieve a desired intermediate position between the seated and open positions, or intermediate range of positions between the seated and open positions, for theplunger 118. - FIGS. 6 and 7 show a
third embodiment 210 of the oil pump assembly. Theoil pump assembly 210 includespump body 112 andrelief valve subassembly 114 of theoil pump assembly 110, and further includes aplunger adjustment mechanism 212. Theplunger adjustment mechanism 212 is similar to theplunger adjustment mechanism 116, and includeshousing 128. Theplunger adjustment mechanism 212 further includes anadditional pump 214 having aninlet 216 connected toinlet 40 ofpump body 112, and anoutlet 218 connected tofirst aperture 132 of thehousing 128. Theadditional pump 214 is also connected toelectronic control unit 34. Furthermore, theadditional pump 214 may be mounted on thepump body 112, as shown in FIG. 6, or theadditional pump 214 may be spaced away from thepump body 112. - When the
additional pump 214 is not activated, inlet oil pressure is provided to thefirst aperture 132. With such an arrangement,plunger 118 moves between a seated position, shown in FIG. 6, and an open position, shown in FIG. 7, based on the pressure differential betweenpassages additional pump 214 is activated byelectronic control unit 34, theadditional pump 214 provides oil pressure to thefirst aperture 132 that is higher than inlet oil pressure. As a result, thepiston 118 is urged toward the open position shown in FIG. 7. Thus,plunger adjustment mechanism 212 may provide a force that acts onplunger 118, in addition to the force created by the pressure differential between thepassages plunger 118 against the bias of thespring 61 toward the open position. Furthermore, duty cycle of theadditional pump 214 may be adjusted, in a similar manner as described above, so as to achieve a desired intermediate position between the seated and open positions, or intermediate range of positions between the seated and open positions, for theplunger 118. - In each of the above embodiments, the
electronic control unit 34 provides necessary power for controlling operation of theplunger adjustment mechanism plunger adjustment mechanism electronic control unit 34 and theplunger adjustment mechanism - While the best mode for carrying out the invention has been described in detail, those familiar with the art to which this invention relates will recognize various alternative designs and embodiments for practicing the invention as defined by the following claims.
Claims (11)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/681,659 US6488479B1 (en) | 2001-05-17 | 2001-05-17 | Variable pressure oil pump |
DE10220305.9A DE10220305B4 (en) | 2001-05-17 | 2002-05-07 | Arrangement for variable pumping of pressure oil and lubrication device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/681,659 US6488479B1 (en) | 2001-05-17 | 2001-05-17 | Variable pressure oil pump |
Publications (2)
Publication Number | Publication Date |
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US20020172604A1 true US20020172604A1 (en) | 2002-11-21 |
US6488479B1 US6488479B1 (en) | 2002-12-03 |
Family
ID=24736212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US09/681,659 Expired - Lifetime US6488479B1 (en) | 2001-05-17 | 2001-05-17 | Variable pressure oil pump |
Country Status (2)
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US (1) | US6488479B1 (en) |
DE (1) | DE10220305B4 (en) |
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Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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DE102015120905A1 (en) * | 2015-12-02 | 2017-06-08 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | internal combustion engine |
EP3187768B1 (en) | 2015-12-17 | 2023-03-15 | Trane International Inc. | System and method for dynamically determining refrigerant film thickness and dynamically controlling refrigerant film thickness at rolling-element bearing of an oil free chiller |
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Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2140735A (en) | 1935-04-13 | 1938-12-20 | Henry R Gross | Viscosity regulator |
US3791408A (en) * | 1972-05-31 | 1974-02-12 | Yuken Kogyo Co Ltd | Electromagnetic pressure-telecontrolling valve |
US4027643A (en) | 1975-08-14 | 1977-06-07 | Feenan Patrick J | Oil cooler control |
US4012012A (en) * | 1975-10-30 | 1977-03-15 | Lockheed Aircraft Corporation | Supplemental oil system for engines |
US4252094A (en) * | 1978-04-24 | 1981-02-24 | Brunswick Corporation | Anti-syphon valve unit for marine fuel supplies apparatus |
US4270562A (en) | 1979-09-28 | 1981-06-02 | Caterpillar Tractor Co. | Fluid sequence bypass apparatus |
DE2940643A1 (en) | 1979-10-06 | 1981-04-16 | Klöckner-Humboldt-Deutz AG, 5000 Köln | FACILITIES FOR THE HEATING MACHINES |
JPS57173513A (en) * | 1981-04-17 | 1982-10-25 | Nippon Soken Inc | Variable valve engine |
US4391296A (en) * | 1981-05-07 | 1983-07-05 | Abbott John D | By-pass pilot operated hydraulic check valve |
US4792113A (en) * | 1982-07-16 | 1988-12-20 | Integrated Flow Systems, Inc. | Fluid flow control valve |
US4473093A (en) * | 1983-06-17 | 1984-09-25 | Ingersoll-Rand Co. | Fluid control valve |
JPS6152474A (en) * | 1984-08-21 | 1986-03-15 | Toyota Motor Corp | Hydraulic control solenoid valve |
US5113658A (en) * | 1990-05-21 | 1992-05-19 | Allied-Signal, Inc. | Hydraulic assist turbocharger system |
US5056556A (en) * | 1990-07-24 | 1991-10-15 | Kabushiki Kaisha Fujikoshi | Solenoid valve |
US5346175A (en) * | 1992-12-31 | 1994-09-13 | Kelsey-Hayes Company | Variable assist steering control valve |
JP3447782B2 (en) * | 1993-01-19 | 2003-09-16 | トヨタ自動車株式会社 | Internal combustion engine lubrication system |
DE69408055T2 (en) * | 1993-04-02 | 1998-05-07 | Yamaha Motor Co Ltd | Method and device for lubricating an internal combustion engine |
US5339776A (en) | 1993-08-30 | 1994-08-23 | Chrysler Corporation | Lubrication system with an oil bypass valve |
US5593133A (en) * | 1995-05-19 | 1997-01-14 | Kelsey-Hayes Company | Variable assist steering pressure control valve |
US5819692A (en) * | 1997-05-01 | 1998-10-13 | Schafer; Timothy Vernon | Piston cooling oil control valve |
US5979168A (en) * | 1997-07-15 | 1999-11-09 | American Standard Inc. | Single-source gas actuation for screw compressor slide valve assembly |
US5884601A (en) * | 1998-02-02 | 1999-03-23 | Siemens Canada Limited | Electric motor driven primary oil pump for an internal combustion engine |
-
2001
- 2001-05-17 US US09/681,659 patent/US6488479B1/en not_active Expired - Lifetime
-
2002
- 2002-05-07 DE DE10220305.9A patent/DE10220305B4/en not_active Expired - Fee Related
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Also Published As
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DE10220305A1 (en) | 2003-02-06 |
DE10220305B4 (en) | 2015-02-12 |
US6488479B1 (en) | 2002-12-03 |
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