US20030168031A1 - Fluid system for an internal combustion engine - Google Patents
Fluid system for an internal combustion engine Download PDFInfo
- Publication number
- US20030168031A1 US20030168031A1 US10/092,815 US9281502A US2003168031A1 US 20030168031 A1 US20030168031 A1 US 20030168031A1 US 9281502 A US9281502 A US 9281502A US 2003168031 A1 US2003168031 A1 US 2003168031A1
- Authority
- US
- United States
- Prior art keywords
- fluid
- internal combustion
- combustion engine
- engine
- fluid system
- 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.)
- Abandoned
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/02—Injectors structurally combined with fuel-injection pumps
- F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
- F02M57/025—Injectors structurally combined with fuel-injection pumps characterised by the pump drive hydraulic, e.g. with pressure amplification
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
- F02M59/105—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive hydraulic drive
Definitions
- the invention relates generally to fluid systems, and more specifically to a fluid system for actuating subsystems of an internal combustion engine.
- the present invention is directed at overcoming one or more of the problems as set forth above.
- a fluid system for an internal combustion engine.
- the internal combustion engine includes a head assembly and has at least one subsystem positioned therein.
- the fluid system includes a hydraulic fluid and a fluid pump operatively supplying the hydraulic fluid to the head assembly and being used solely for actuating the at least one subsystem positioned in the head assembly of the internal combustion engine.
- the internal combustion engine 10 has a head assembly 12 with different subsystems 13 positioned therein.
- One such subsystem 13 is a hydraulically powered fuel injection system 14 .
- the fuel injection system 14 includes a number of fuel injectors 16 which are provided to selectively inject fuel into an associated engine cylinder (not shown).
- the fuel injection system 14 of the present invention may be any known fuel injection system, however, one such fuel injection system, which is particularly useful as the fuel injection system 14 is a Hydraulic Electronic Unit Injection (HEUI) system which is commercially available from Caterpillar, Inc. of Peoria, Ill.
- HEUI Hydraulic Electronic Unit Injection
- Hydraulic fluid 18 within a fluid system 20 having a fluid manifold 22 is maintained at a relatively high fluid pressure by a hydraulic pump 24 .
- the hydraulic pump 24 may be driven by the engine 10 and is provided to pump hydraulic fluid 18 from a reservoir 26 separate from the engine lubricating system to the fluid manifold 22 .
- the fluid system 20 also includes a heat exchanger 28 , a filter 30 and may also include an electrical resistive heater 32 positioned in the hydraulic fluid 18 stored in the reservoir 26 . With the heat exchanger 28 , the filter 30 and the electrical resistive heater 32 , the hydraulic fluid 18 can be controlled to accommodate desired levels of cleanliness and temperature.
- the head assembly 12 is completely sealed and hydraulic fluid 18 from the fluid system 20 drains back to the reservoir 26 , as is schematically represented in the drawing.
- Each of the fuel injectors 16 is fluidly coupled to the fluid manifold 22 such that hydraulic fluid 18 under pressure from the manifold 22 is supplied to each of the fuel injectors 16 and utilized to generate a relatively high fuel pressure within each fuel injector 16 .
- the engine 10 further includes a fuel system 34 , which has a fuel pump 36 for pumping fuel to each of the fuel injectors 16 .
- the fuel within the fuel injectors 16 is further pressurized via a plunger assembly (not shown), which is driven by the fluid pressure from the fluid manifold 22 .
- the plurality of subsystems 13 of the head assembly 12 may also include a hydraulically powered exhaust valve actuation assembly 50 .
- the exhaust valve actuation assembly 50 may be a compression release brake assembly 51 .
- the compression release brake assembly 51 includes a number of actuator assemblies 52 , which are provided to selectively open the exhaust valves (not shown) associated with the engine 10 when the engine 10 is being operated in a brake mode of operation.
- Each of the actuator assemblies 52 includes a housing 54 having a piston 56 positioned therein.
- Each of the actuator assemblies 52 also includes a high-speed solenoid actuated hydraulic valve 58 .
- the solenoid actuated hydraulic valves 58 are similar to the solenoid actuated hydraulic valves 38 of the fuel injectors 16 .
- the solenoid actuated hydraulic valve 58 selectively couples the housing 54 and piston 56 to the fluid manifold 22 of the fluid system 20 .
- pressurized hydraulic fluid 18 is advanced from the fluid manifold 22 , into fluid passages in the housing 54 of the valve 58 .
- the presence of pressurized hydraulic fluid 18 in the housing 54 causes the piston 56 to be urged out of the housing 54 and into an extended position in which the piston 56 is urged into contact with an exhaust valve rocker arm (not shown) or directly with an exhaust valve (not shown).
- an exhaust valve rocker arm not shown
- an exhaust valve not shown
- each of the solenoid actuated hydraulic valves 58 is coupled to the engine control module 40 via a wiring harness 60 .
- the engine control module 40 may selectively generate pulses, which are sent to the individual solenoid actuated hydraulic valves 58 so as to open the valve 58 thereby causing pressurized hydraulic fluid 18 to be advanced from the fluid manifold 22 to a fluid side of the piston 56 so as to urge the piston 56 out of the housing 54 .
- Such movement of the piston 56 causes actuation of the exhaust valve thereby allowing gas to be advanced out the associated engine cylinder.
- the engine control module 40 ceases to generate a pulse on the wiring harness 60 thereby causing the particular exhaust valve to be closed.
- the engine 10 may be an engine that does not require a cam to operate the exhaust or intake valves (neither shown), in which case, the actuator assemblies 52 of exhaust valve actuation assembly 50 would also function to open and close the exhaust valves during normal operation of the engine (i.e. not in brake mode).
- This type of engine 10 includes an additional subsystem 13 such as an intake valve actuation assembly 70 .
- the intake valve actuation assembly 70 includes a number of actuator assemblies 72 , which are provided to selectively open the intake valves (not shown) associated with the engine 10 when the engine 10 is being operated in a normal mode of operation.
- Each of the actuator assemblies 72 includes a housing 74 having a piston 76 positioned therein.
- Each of the actuator assemblies 72 also includes a high-speed solenoid actuated hydraulic valve 78 .
- the solenoid actuated hydraulic valves 78 are similar to both of the previous described solenoid actuated hydraulic valves 38 , 58 .
- the solenoid actuated hydraulic valve 78 selectively couples the housing 74 and piston 76 to the fluid manifold 22 .
- pressurized hydraulic fluid 18 is advanced from the fluid manifold 22 , into fluid passages in the housing 74 .
- the presence of pressurized hydraulic fluid 18 in the housing 74 causes the piston 76 to be urged out of the housing 74 and into an extended position in which the piston 76 is urged into contact with an intake valve rocker arm (not shown) or directly with an intake valve (not shown).
- each of the solenoid actuated hydraulic valves 78 is coupled to the engine control module 40 via a wiring harness 80 .
- the engine control module 40 may selectively generate pulses, which are sent to the individual solenoid actuated hydraulic valves 78 so as to open the valve 78 thereby causing pressurized hydraulic fluid 18 to be advanced from the fluid manifold 22 to a fluid side of the piston 76 so as to urge the piston 76 out of the housing 74 .
- Such movement of the piston 76 causes opening of the intake valve thereby allowing pressurized fuel to be advanced into the associated engine cylinder.
- the engine control module 40 ceases to generate a pulse on the wiring harness 80 thereby causing the particular intake valve to be closed.
- the fluid system 20 supplies hydraulic fluid 18 to subsystems 13 positioned in the head assembly 13 of the internal combustion engine 10 .
- subsystems of the head assembly 12 include the fuel injection system 14 , exhaust valve actuation system 50 and in the event of a camless engine 10 an intake valve actuation system 70 .
- the hydraulic fluid 18 can be controlled at predetermined temperature and cleanliness levels.
- the filter 30 of the fluid system 20 can be selected to provide a predetermined level of filtration.
- the heat exchanger 28 and the heater 32 are used to either heat or cool the hydraulic fluid 18 based on ambient operating conditions.
- the hydraulic fluid 18 may also be selected to have viscosity/temperature properties (i.e. small viscosity changes with temperature change) that minimize the sensitivity of actuator performance to oil temperature. In this case the heat exchanger 28 or heater 32 may not be needed.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
A fluid system for an internal combustion engine is provided that is used to supply the operating muscle to engine subsystems. These subsystems include a fuel injection system, an exhaust valve actuation system and an intake valve actuation system. The fluid system is isolated from any other engine fluid system so as to control temperature, cleanliness levels and absorption of combustion byproducts.
Description
- The invention relates generally to fluid systems, and more specifically to a fluid system for actuating subsystems of an internal combustion engine.
- Fluid systems are commonly used in machinery and internal combustion engines to perform a variety of functions such as lubricating moving parts and supplying operating muscle for various systems and operations. Typically, a fluid such as oil is pumped from a reservoir and supplied under pressure to a lubrication point, valve or an actuator to perform a specified operation. In the case of internal combustion engines, lubricating oil is used to lubricate the moving parts of the engine and also is used as an actuating fluid to power other systems such as fuel injection.
- During operation, an internal combustion engine produces combustion byproducts such as carbon monoxide, oxides of nitrogen, hydrocarbons, sulfuric acid and other particulate matter such as metal fines and the like due to wear of engine components. Over time, the lubricating oil becomes saturated with these contaminants thereby reducing the lubricating properties and the useful life of the oil. The contaminants entrained in the lubricating oil also cause corrosion and unnecessary wear of the internal combustion engine components and other engine systems components that used the lubricating oil.
- One approach for combating this problem is disclosed in U.S. Pat. No. 5,676,106 to Hoffman et al. issued on Oct. 14, 1997 and is assigned to the owner of the present invention. The patent discloses extracting small amounts of lubricating oil at controlled time intervals, through the use of a controller, and mixing the extracted oil with the fuel supply. This approach introduces the contaminated oil into the fuel supply so that it can be burnt with the fuel during subsequent combustion cycles. In this manner, the lubricating oil reaches a saturation point and the build up of contaminants is maintained at a predetermined level so that the time frame between oil changes can be extended. Another problem with using lubricating oil is variation in the viscosity of the lubricating oil between cold startup and normal operating conditions.
- The present invention is directed at overcoming one or more of the problems as set forth above.
- In one aspect of the present invention a fluid system is provided for an internal combustion engine. The internal combustion engine includes a head assembly and has at least one subsystem positioned therein. The fluid system includes a hydraulic fluid and a fluid pump operatively supplying the hydraulic fluid to the head assembly and being used solely for actuating the at least one subsystem positioned in the head assembly of the internal combustion engine.
- The sole figure is a schematic representation of an internal combustion engine embodying the present invention.
- Referring now to the sole drawing, a schematic representation of an
internal combustion engine 10 is shown. Theinternal combustion engine 10 is shown by way of example as being a six-cylinder compression ignition engine or diesel engine. - The
internal combustion engine 10 has ahead assembly 12 withdifferent subsystems 13 positioned therein. Onesuch subsystem 13 is a hydraulically poweredfuel injection system 14. Thefuel injection system 14 includes a number offuel injectors 16 which are provided to selectively inject fuel into an associated engine cylinder (not shown). Thefuel injection system 14 of the present invention may be any known fuel injection system, however, one such fuel injection system, which is particularly useful as thefuel injection system 14 is a Hydraulic Electronic Unit Injection (HEUI) system which is commercially available from Caterpillar, Inc. of Peoria, Ill. -
Hydraulic fluid 18 within afluid system 20 having afluid manifold 22 is maintained at a relatively high fluid pressure by ahydraulic pump 24. Thehydraulic pump 24 may be driven by theengine 10 and is provided to pumphydraulic fluid 18 from areservoir 26 separate from the engine lubricating system to thefluid manifold 22. Thefluid system 20 also includes aheat exchanger 28, afilter 30 and may also include an electricalresistive heater 32 positioned in thehydraulic fluid 18 stored in thereservoir 26. With theheat exchanger 28, thefilter 30 and the electricalresistive heater 32, thehydraulic fluid 18 can be controlled to accommodate desired levels of cleanliness and temperature. Thehead assembly 12 is completely sealed andhydraulic fluid 18 from thefluid system 20 drains back to thereservoir 26, as is schematically represented in the drawing. - Each of the
fuel injectors 16 is fluidly coupled to thefluid manifold 22 such thathydraulic fluid 18 under pressure from themanifold 22 is supplied to each of thefuel injectors 16 and utilized to generate a relatively high fuel pressure within eachfuel injector 16. In particular, theengine 10 further includes afuel system 34, which has afuel pump 36 for pumping fuel to each of thefuel injectors 16. The fuel within thefuel injectors 16 is further pressurized via a plunger assembly (not shown), which is driven by the fluid pressure from thefluid manifold 22. - Each
fuel injector 16 includes a high speed, solenoid actuatedhydraulic valve 38, which is electrically coupled to anengine control module 40 via awiring harness 42. In such a manner, theengine control module 40 may selectively generate injection pulses which are sent to the individual solenoid actuatedhydraulic valves 38 so as to open thevalve 38 thereby increasing the fluid pressure exerted on a plunger assembly (not shown) of the associatedfuel injector 16 which in turn increases the fuel pressure within theinjector 16. Such an increase in the fuel pressure within thefuel injector 16 causes fuel to be injected into the engine cylinder associated with theparticular fuel injector 16. It should be appreciated that theengine control module 40 may operate thefuel injectors 16 in wide variety of manners in order to generate injection sequences and operation characteristics, which fit the needs of a givenengine 10. - The plurality of
subsystems 13 of thehead assembly 12 may also include a hydraulically powered exhaustvalve actuation assembly 50. For example, the exhaustvalve actuation assembly 50 may be a compressionrelease brake assembly 51. The compressionrelease brake assembly 51 includes a number ofactuator assemblies 52, which are provided to selectively open the exhaust valves (not shown) associated with theengine 10 when theengine 10 is being operated in a brake mode of operation. Each of theactuator assemblies 52 includes ahousing 54 having apiston 56 positioned therein. Each of theactuator assemblies 52 also includes a high-speed solenoid actuatedhydraulic valve 58. The solenoid actuatedhydraulic valves 58 are similar to the solenoid actuatedhydraulic valves 38 of thefuel injectors 16. - The solenoid actuated
hydraulic valve 58 selectively couples thehousing 54 andpiston 56 to thefluid manifold 22 of thefluid system 20. In particular, when the solenoid actuatedhydraulic valve 58 is positioned in an open position, pressurizedhydraulic fluid 18 is advanced from thefluid manifold 22, into fluid passages in thehousing 54 of thevalve 58. The presence of pressurizedhydraulic fluid 18 in thehousing 54 causes thepiston 56 to be urged out of thehousing 54 and into an extended position in which thepiston 56 is urged into contact with an exhaust valve rocker arm (not shown) or directly with an exhaust valve (not shown). Thus, actuating one or more exhaust valves for each cylinder. - It should be appreciated that operation of the
actuator assemblies 52 are under the control of theengine control module 40. In particular, each of the solenoid actuatedhydraulic valves 58 is coupled to theengine control module 40 via awiring harness 60. In such a manner, theengine control module 40 may selectively generate pulses, which are sent to the individual solenoid actuatedhydraulic valves 58 so as to open thevalve 58 thereby causing pressurizedhydraulic fluid 18 to be advanced from thefluid manifold 22 to a fluid side of thepiston 56 so as to urge thepiston 56 out of thehousing 54. Such movement of thepiston 56 causes actuation of the exhaust valve thereby allowing gas to be advanced out the associated engine cylinder. Once the exhaust valve has been opened for a predetermined period of time, theengine control module 40 ceases to generate a pulse on thewiring harness 60 thereby causing the particular exhaust valve to be closed. - Additionally, the
engine 10 may be an engine that does not require a cam to operate the exhaust or intake valves (neither shown), in which case, the actuator assemblies 52 of exhaustvalve actuation assembly 50 would also function to open and close the exhaust valves during normal operation of the engine (i.e. not in brake mode). This type ofengine 10 includes anadditional subsystem 13 such as an intakevalve actuation assembly 70. The intakevalve actuation assembly 70 includes a number ofactuator assemblies 72, which are provided to selectively open the intake valves (not shown) associated with theengine 10 when theengine 10 is being operated in a normal mode of operation. Each of theactuator assemblies 72 includes ahousing 74 having apiston 76 positioned therein. Each of theactuator assemblies 72 also includes a high-speed solenoid actuatedhydraulic valve 78. The solenoid actuatedhydraulic valves 78 are similar to both of the previous described solenoid actuatedhydraulic valves - The solenoid actuated
hydraulic valve 78 selectively couples thehousing 74 andpiston 76 to thefluid manifold 22. In particular, when the solenoid actuatedhydraulic valve 78 is positioned in an open position, pressurizedhydraulic fluid 18 is advanced from thefluid manifold 22, into fluid passages in thehousing 74. The presence of pressurizedhydraulic fluid 18 in thehousing 74 causes thepiston 76 to be urged out of thehousing 74 and into an extended position in which thepiston 76 is urged into contact with an intake valve rocker arm (not shown) or directly with an intake valve (not shown). Thus, actuating one or more intake valves for each cylinder - It should be appreciated that operation of the
actuator assemblies 72 are under the control of theengine control module 40. In particular, each of the solenoid actuatedhydraulic valves 78 is coupled to theengine control module 40 via awiring harness 80. In such a manner, theengine control module 40 may selectively generate pulses, which are sent to the individual solenoid actuatedhydraulic valves 78 so as to open thevalve 78 thereby causing pressurized hydraulic fluid 18 to be advanced from thefluid manifold 22 to a fluid side of thepiston 76 so as to urge thepiston 76 out of thehousing 74. Such movement of thepiston 76 causes opening of the intake valve thereby allowing pressurized fuel to be advanced into the associated engine cylinder. Once the intake valve has been opened for a predetermined period of time, theengine control module 40 ceases to generate a pulse on thewiring harness 80 thereby causing the particular intake valve to be closed. - Industrial Applicability
- In use, the
fluid system 20 supplieshydraulic fluid 18 tosubsystems 13 positioned in thehead assembly 13 of theinternal combustion engine 10. Specifically, subsystems of thehead assembly 12 include thefuel injection system 14, exhaustvalve actuation system 50 and in the event of acamless engine 10 an intakevalve actuation system 70. Since thefluid system 20 is isolated from other engine fluid systems, such as an engine lubrication system or a fuel supply system thehydraulic fluid 18 does not have the opportunity to become contaminated with any byproducts of combustion. Additionally, thehydraulic fluid 18 can be controlled at predetermined temperature and cleanliness levels. For example, thefilter 30 of thefluid system 20 can be selected to provide a predetermined level of filtration. Theheat exchanger 28 and theheater 32 are used to either heat or cool thehydraulic fluid 18 based on ambient operating conditions. Thehydraulic fluid 18 may also be selected to have viscosity/temperature properties (i.e. small viscosity changes with temperature change) that minimize the sensitivity of actuator performance to oil temperature. In this case theheat exchanger 28 orheater 32 may not be needed. - Other aspects, objects, and features of the present invention can be obtained from a study of the drawings, the disclosure, and the appended claims.
Claims (14)
1. A fluid system for an internal combustion engine, said internal combustion engine including a head assembly having at least one subsystem positioned therein, said fluid system comprising:
hydraulic fluid; and
a fluid pump operatively supplying said hydraulic fluid to the head assembly and being used solely for actuating the at least one subsystem positioned in the head assembly of the internal combustion engine.
2. The fluid system of claim 1 , wherein said fluid system includes a high pressure fluid manifold.
3. The fluid system of claim 2 , including a heat exchanger operatively connected between the fluid pump and the high pressure manifold.
4. The fluid system of claim 1 , including a heater adapted for maintaining the hydraulic fluid at a predetermined temperature.
5. The fluid system of claim 1 , wherein said hydraulic fluid is used to actuate a fuel injection system.
6. The fluid system of claim 1 , wherein said hydraulic fluid is used to actuate an exhaust valve actuation system.
7. The fluid system of claim 6 , wherein said exhaust valve actuation system is a compression release brake system.
8. The fluid system of claim 1 , where said hydraulic fluid is used to actuate an intake valve actuation system.
9. An internal combustion engine comprising:
a head assembly;
at least one subsystem positioned within said head assembly; and
a fluid system being fluidly coupled to and used solely for actuating at least one of said subsystems.
10. The internal combustion engine of claim 9 , wherein at least one of said subsystems is a fuel injection system.
11. The internal combustion engine of claim 9 , wherein at least one of said subsystems is an exhaust valve actuating system.
12. The internal combustion engine of claim 11 , wherein said exhaust valve actuating system being a compression release brake system.
13. The internal combustion engine of claim 9 , wherein at least one of said subsystems is an intake valve actuation system.
14. The internal combustion engine of claim 13 , being a camless engine.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/092,815 US20030168031A1 (en) | 2002-03-07 | 2002-03-07 | Fluid system for an internal combustion engine |
DE10309233A DE10309233A1 (en) | 2002-03-07 | 2003-03-03 | Fluid system for an internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/092,815 US20030168031A1 (en) | 2002-03-07 | 2002-03-07 | Fluid system for an internal combustion engine |
Publications (1)
Publication Number | Publication Date |
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US20030168031A1 true US20030168031A1 (en) | 2003-09-11 |
Family
ID=27787886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/092,815 Abandoned US20030168031A1 (en) | 2002-03-07 | 2002-03-07 | Fluid system for an internal combustion engine |
Country Status (2)
Country | Link |
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US (1) | US20030168031A1 (en) |
DE (1) | DE10309233A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050011478A1 (en) * | 2003-07-14 | 2005-01-20 | Neal Timothy L. | Engine with dual oiling and hydraulic valves |
US6978746B2 (en) * | 2003-03-05 | 2005-12-27 | Delphi Technologies, Inc. | Method and apparatus to control a variable valve control device |
CN103603702A (en) * | 2013-09-27 | 2014-02-26 | 大连理工大学 | Intensive multifunctional fully variable valve actuation system for 6-cylinder internal combustion engine |
CN103742217A (en) * | 2013-12-28 | 2014-04-23 | 大连理工大学 | Modularized multifunctional variable valve driving system used for six-cylinder internal combustion engine |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011104934A1 (en) * | 2011-06-21 | 2012-12-27 | Daimler Ag | An adjusting device for variably setting a compression ratio of an internal combustion engine |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5012778A (en) * | 1990-09-21 | 1991-05-07 | Jacobs Brake Technology Corporation | Externally driven compression release retarder |
US5373817A (en) * | 1993-12-17 | 1994-12-20 | Ford Motor Company | Valve deactivation and adjustment system for electrohydraulic camless valvetrain |
US5501186A (en) * | 1993-07-27 | 1996-03-26 | Unisia Jecs Corporation | Engine valve control mechanism |
US5509383A (en) * | 1991-02-20 | 1996-04-23 | Itt Automotive Europe Gmbh | Hydraulic unit |
US5517972A (en) * | 1994-11-23 | 1996-05-21 | Caterpillar Inc. | Method and apparatus for rate shaping injection in a hydraulically-actuated electronically controlled fuel injector |
US6067946A (en) * | 1996-12-16 | 2000-05-30 | Cummins Engine Company, Inc. | Dual-pressure hydraulic valve-actuation system |
-
2002
- 2002-03-07 US US10/092,815 patent/US20030168031A1/en not_active Abandoned
-
2003
- 2003-03-03 DE DE10309233A patent/DE10309233A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5012778A (en) * | 1990-09-21 | 1991-05-07 | Jacobs Brake Technology Corporation | Externally driven compression release retarder |
US5509383A (en) * | 1991-02-20 | 1996-04-23 | Itt Automotive Europe Gmbh | Hydraulic unit |
US5501186A (en) * | 1993-07-27 | 1996-03-26 | Unisia Jecs Corporation | Engine valve control mechanism |
US5373817A (en) * | 1993-12-17 | 1994-12-20 | Ford Motor Company | Valve deactivation and adjustment system for electrohydraulic camless valvetrain |
US5517972A (en) * | 1994-11-23 | 1996-05-21 | Caterpillar Inc. | Method and apparatus for rate shaping injection in a hydraulically-actuated electronically controlled fuel injector |
US6067946A (en) * | 1996-12-16 | 2000-05-30 | Cummins Engine Company, Inc. | Dual-pressure hydraulic valve-actuation system |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6978746B2 (en) * | 2003-03-05 | 2005-12-27 | Delphi Technologies, Inc. | Method and apparatus to control a variable valve control device |
US20050011478A1 (en) * | 2003-07-14 | 2005-01-20 | Neal Timothy L. | Engine with dual oiling and hydraulic valves |
US6899070B2 (en) * | 2003-07-14 | 2005-05-31 | General Motors Corporation | Engine with dual oiling and hydraulic valves |
CN103603702A (en) * | 2013-09-27 | 2014-02-26 | 大连理工大学 | Intensive multifunctional fully variable valve actuation system for 6-cylinder internal combustion engine |
CN103742217A (en) * | 2013-12-28 | 2014-04-23 | 大连理工大学 | Modularized multifunctional variable valve driving system used for six-cylinder internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
DE10309233A1 (en) | 2003-10-23 |
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AS | Assignment |
Owner name: CATERPILLAR INC., ILLINOIS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FENELON, THOMAS R.;LEMAN, SCOTT A.;REEL/FRAME:012679/0556;SIGNING DATES FROM 20020226 TO 20020304 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |