WO2005049990A1 - Hydrofeder für verbrennungskolbenmaschinen aller grössen - Google Patents
Hydrofeder für verbrennungskolbenmaschinen aller grössen Download PDFInfo
- Publication number
- WO2005049990A1 WO2005049990A1 PCT/DE2004/002471 DE2004002471W WO2005049990A1 WO 2005049990 A1 WO2005049990 A1 WO 2005049990A1 DE 2004002471 W DE2004002471 W DE 2004002471W WO 2005049990 A1 WO2005049990 A1 WO 2005049990A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- hydraulic spring
- connecting rod
- spring
- oil
- 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.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/32—Engines characterised by connections between pistons and main shafts and not specific to preceding main groups
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
- F16C7/04—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads with elastic intermediate part of fluid cushion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F5/00—Liquid springs in which the liquid works as a spring by compression, e.g. combined with throttling action; Combinations of devices including liquid springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/22—Internal combustion engines
Definitions
- Top dead center is the maximum of the quasi-sine movement of the piston.
- the height of the hurdle is determined by the pressure of the fuel gas mixture.
- To significantly lower this hurdle it requires a new design of the crank mechanism.
- the technical solution of the problem is based on the fact that the compressibility coefficient of oil from the lubrication system of the reciprocating engine is large and almost independent of its quality.
- the hydraulic spring - a few milliliters of oil - is trapped in an axis-parallel blind hole in the connecting rod with a movable pressure piston.
- this hydraulic spring can be designed according to the size of the engine.
- the spring stroke is large: Depending on the pressure in the combustion chamber, the maximum sinus height drops to a plateau that can be significantly lower (up to 5 mm), thus increasing the dead volume by up to 100%.
- the spring travel is greatest.
- the hydrofoil path follows the gas force on the piston with a minimum time delay, so that for each state of charge of the piston engine, an optimal setting of the flat rising plateau below the TDC is done automatically.
- Decisive for the dynamics of the Hydrofederpleuel is the time constant of spring force (> 10 4 N) and sprung inertial mass of piston and small connecting rod eye (1 kg).
- the time constant of the hydraulic spring of ⁇ 10 "3 sec is sufficiently small in order to be able to follow the dynamics of the crank mechanism up to speeds> 6,000 1 / min.
- the number of advantages for a piston engine equipped with the Hydrofederpleuel is even greater. Lighter, quieter, more powerful, more economical and cleaner are the attributes. Responsible for this are the significantly extended combustion time after a possible very early ignition and the reduction of the peak pressure.
- the fuel gas mixture expands, whereby the volume work P • V is temporarily stored in the hydraulic spring. Pressure and temperature decrease. The resulting thermodynamic state promotes the exothermic combustion reactions and slows the endothermic.
- the rapid response of the hydrofeather to the engine dynamics is not tied to the installation in the connecting rod. Rather, the hydraulic spring can be brought into action in other engine components: Preferably in a double piston or in a piston which may be arranged in the cylinder head.
- the graphic representation of the hydraulic spring shows the figure 1.
- the large connecting rod 1 remains unchanged in the classical form.
- the connecting rod 2 mutates in the form of a thick-walled pressure vessel with a bottom and is container for a few ml of motor oil 3, the compressible medium.
- the hydraulic spring is the construction by the piston 4, which transfers the gas power from the piston via the small connecting rod 5 via the oil to the container bottom.
- the carrying capacity of the hydraulic spring is large.
- the shortening of the oil column 3 by about 10% requires a pressure of about 3.5 kbar; At this pressure, a piston 4 of 1 cm 2 cross-section carries a compressive force of 3.5 x 10 4 N (- 3.5 tonnes) so forces in an order of magnitude, which are state of the art in passenger car engines.
- the sealing element 6 carries an annular seal at the lower end, which corresponds in shape and material of the known technique for high pressures and seals statically.
- a very small flow of oil flows through the oil film between the piston 4 and the seal, which counteracts the microliter pump formed from the stepped piston 4 and the stepped bore in the sealing element 6.
- Control channels 7 limit the pumping process and ensure a constant oil level.
- the maximum distance between the two connecting rods is determined by the adjusting ring 8. About the holes 9 and 10, both the hydraulic spring and the slide of the small connecting rod with the Schmiersvstem the engine is connected.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112004002082T DE112004002082D2 (de) | 2003-11-15 | 2004-11-09 | Hydrofeder für Verbrennungskolbenmaschinen aller Grössen |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10353396.6 | 2003-11-15 | ||
| DE10353396A DE10353396A1 (de) | 2003-11-15 | 2003-11-15 | Pleuel mit Energiespeicher für Verbrennungskolbenmaschinen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005049990A1 true WO2005049990A1 (de) | 2005-06-02 |
Family
ID=32603271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2004/002471 Ceased WO2005049990A1 (de) | 2003-11-15 | 2004-11-09 | Hydrofeder für verbrennungskolbenmaschinen aller grössen |
Country Status (2)
| Country | Link |
|---|---|
| DE (2) | DE10353396A1 (de) |
| WO (1) | WO2005049990A1 (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006042072A1 (de) * | 2006-09-05 | 2008-03-06 | Horst Prof. Dr. Gentsch | Pleuelstange |
| EP2110568A2 (de) | 2008-04-16 | 2009-10-21 | Gentsch, Horst | Pleuelstange |
| US10408126B2 (en) * | 2014-12-22 | 2019-09-10 | Toyota Jidosha Kabushiki Kaisha | Variable length connecting rod and variable compression ratio internal combustion engine |
| US10808607B2 (en) | 2015-06-15 | 2020-10-20 | Cummins Inc. | Combustion chamber elasticity device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2889864B1 (fr) * | 2005-08-19 | 2008-11-28 | Peugeot Citroen Automobiles Sa | Bielle pour moteur de vehicule automobile. |
| CN108556613B (zh) * | 2018-03-30 | 2021-01-26 | 安徽工程大学 | 一种高抗振的车辆连杆支架 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH252208A (de) * | 1945-08-21 | 1947-12-15 | Gfeller Ernst | Kurbelgetriebe, insbesondere für Verbrennungs-Kraftmaschinen. |
| DE1062981B (de) | 1952-06-10 | 1959-08-06 | British Internal Comb Engine R | Viertakt-Brennkraftmaschine mit einem Kolben aus mehreren, zur AEnderung des Verdichtungs-verhaeltnisses gegeneinander verstellbaren Kolbenteilen |
| DE3004402A1 (de) | 1980-02-07 | 1981-08-13 | Daimler-Benz Ag, 7000 Stuttgart | Kurbeltrieb einer hubkolben-brennkraftmaschine mit waehrend des betriebes veraenderbarem kompressionsverhaeltnis |
| GB2161580A (en) * | 1984-07-07 | 1986-01-15 | Peter Robert Davis | Variable length connecting rod |
| JPH01216033A (ja) | 1988-02-25 | 1989-08-30 | Hideji Zennami | 往復内燃機関の円滑運転と燃料効率を良くする変容サイクル機構 |
| US5755192A (en) | 1997-01-16 | 1998-05-26 | Ford Global Technologies, Inc. | Variable compression ratio piston |
| DE19835146A1 (de) * | 1998-08-04 | 1999-06-10 | Daimler Chrysler Ag | Pleuelstange |
| WO2002010568A1 (en) * | 2000-08-02 | 2002-02-07 | Yadegar Jerry I | Hydraulically adjustable connecting rod for internal combustion engine efficiency |
-
2003
- 2003-11-15 DE DE10353396A patent/DE10353396A1/de not_active Withdrawn
-
2004
- 2004-11-09 WO PCT/DE2004/002471 patent/WO2005049990A1/de not_active Ceased
- 2004-11-09 DE DE112004002082T patent/DE112004002082D2/de not_active Ceased
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH252208A (de) * | 1945-08-21 | 1947-12-15 | Gfeller Ernst | Kurbelgetriebe, insbesondere für Verbrennungs-Kraftmaschinen. |
| DE1062981B (de) | 1952-06-10 | 1959-08-06 | British Internal Comb Engine R | Viertakt-Brennkraftmaschine mit einem Kolben aus mehreren, zur AEnderung des Verdichtungs-verhaeltnisses gegeneinander verstellbaren Kolbenteilen |
| DE3004402A1 (de) | 1980-02-07 | 1981-08-13 | Daimler-Benz Ag, 7000 Stuttgart | Kurbeltrieb einer hubkolben-brennkraftmaschine mit waehrend des betriebes veraenderbarem kompressionsverhaeltnis |
| GB2161580A (en) * | 1984-07-07 | 1986-01-15 | Peter Robert Davis | Variable length connecting rod |
| JPH01216033A (ja) | 1988-02-25 | 1989-08-30 | Hideji Zennami | 往復内燃機関の円滑運転と燃料効率を良くする変容サイクル機構 |
| US5755192A (en) | 1997-01-16 | 1998-05-26 | Ford Global Technologies, Inc. | Variable compression ratio piston |
| DE19835146A1 (de) * | 1998-08-04 | 1999-06-10 | Daimler Chrysler Ag | Pleuelstange |
| WO2002010568A1 (en) * | 2000-08-02 | 2002-02-07 | Yadegar Jerry I | Hydraulically adjustable connecting rod for internal combustion engine efficiency |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006042072A1 (de) * | 2006-09-05 | 2008-03-06 | Horst Prof. Dr. Gentsch | Pleuelstange |
| EP2110568A2 (de) | 2008-04-16 | 2009-10-21 | Gentsch, Horst | Pleuelstange |
| DE102008001206A1 (de) | 2008-04-16 | 2009-11-05 | Horst Prof. Dr. Gentsch | Pleuelstange |
| US10408126B2 (en) * | 2014-12-22 | 2019-09-10 | Toyota Jidosha Kabushiki Kaisha | Variable length connecting rod and variable compression ratio internal combustion engine |
| US10808607B2 (en) | 2015-06-15 | 2020-10-20 | Cummins Inc. | Combustion chamber elasticity device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10353396A1 (de) | 2004-07-29 |
| DE112004002082D2 (de) | 2006-07-13 |
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