WO2009021469A1 - Combustion engine convertible to compressor or pneumatic motor - Google Patents

Combustion engine convertible to compressor or pneumatic motor Download PDF

Info

Publication number
WO2009021469A1
WO2009021469A1 PCT/CZ2007/000110 CZ2007000110W WO2009021469A1 WO 2009021469 A1 WO2009021469 A1 WO 2009021469A1 CZ 2007000110 W CZ2007000110 W CZ 2007000110W WO 2009021469 A1 WO2009021469 A1 WO 2009021469A1
Authority
WO
WIPO (PCT)
Prior art keywords
cam
rocker arm
valve
combustion engine
auxiliary
Prior art date
Application number
PCT/CZ2007/000110
Other languages
French (fr)
Inventor
Libor Herber
Original Assignee
Libor Herber
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Libor Herber filed Critical Libor Herber
Publication of WO2009021469A1 publication Critical patent/WO2009021469A1/en

Links

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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • 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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L1/181—Centre pivot rocking arms

Definitions

  • the invention concerns a combustion engine that can be also used as a drive unit of pneumatic drive or as a compressor and solves both generating torque and producing compressed air by the same device.
  • combustion engines of standard design contain at least one piston, which slides in a cylinder in that increased pressure arises in piston's upper dead centre as result of expansion of combustion gases in the course of combustion of gas or liquid fuel. Gas expansion causes piston motion from the upper to bottom dead centre and thus conversion of pressure energy to kinetic energy.
  • the piston is coupled with crankshaft through a piston rod.
  • the gas inlet and outlet from and into cylinder space is controlled by means of valves, governing of which depends on position of the rocker arm bearing on an involved cam of the camshaft that is coupled with the crankshaft.
  • At least one piston sliding in the cylinder and control of the gas inlet and outlet from and into the space between the piston and cylinder head by means of valves is also a basis of some compressors and pneumatic motors.
  • combustion engine The main difference between a combustion engine and compressor or pneumatic motor consists in mode of valve opening and closing. Operation of four stroke combustion engine is series of ever repeating sequences of following processes: Suction when the suction valve is open and the piston moves to bottom dead centre, compression, when both valves are closed and the piston moves to upper dead centre, expansion, when both valves are closed and the piston is pressed from upper dead centre to bottom dead centre due to increased pressure at fuel combustion, and exhaust, when the exhaust valve is open and the piston moves to upper dead centre.
  • the combustion engines cannot be used for gas compression.
  • compressors intended for gas compression that contain piston sliding inside the cylinder, where the inner cylinder space is connected to the inlet and outlet manifold through the control valves.
  • the piston of such compressor is coupled with another mechanism mediating motion transfer between the piston arid source, which can be for example a combustion engine or electric motor.
  • Compressors can be designed so that they can be used as pneumatic motors. The compressor cannot be used as a combustion engine.
  • a combustion engine convertible to a compressor or pneumatic motor, containing at least one piston sliding in a cylinder, air intake manifold, exhaust manifold, at least one suction valve and at least one exhaust valve, rocker arm and camshaft with at least one cam.
  • Principle of the invention is that in addition to cam and rocker arm belong to each valve auxiliary cam and auxiliary rocker arm, whereas each pair of rocker arms is provided with a device for their interconnecting.
  • An advantageous alternative is when the cam and auxiliary cam pertaining to the same valve are on a common camshaft and are turned to each other by 180°.
  • the device for interconnection of the rocker arm and auxiliary rocker arm consists of two disconnectable parts, whereas each part is situated on another rocker arm.
  • the first part of the device (7) for interconnection of rocker arms contains a slide out pin oppositely situated to a hole representing the second part of the device for interconnection of rocker arms.
  • Advantage of this invention is possibility to use one device on the one hand as a mechanic drive and on the other hand as a machine for compressed gas production, for example air, for the purpose of accumulation of inertial energy that would be otherwise foiled through unnecessary braking.
  • the engine according to the invention during vehicle travel, it is possible to use resistance that engine counteracts in compressor mode to braking, wherewith on the one hand wear of brake elements reduces and on the other hand otherwise foiled energy accumulates in form of compressed air that can be used as an energy source of auxiliary vehicle drive later on while moving off and travelling, when the same combustion engine can be switched into mode of pneumatic motor or auxiliary pneumatic motor, or for instant provision of overpressure through a turbocharged engine while starting and at low revolutions, when the turbocharger is not functional, or for turbo-charging of motor with higher pressure, than the turbocharger is able to produce.
  • Figures 1 and 2 represent schematic view of the valve control, whereas Figure 1 represents the state in combustion engine mode, while Figure 2 represents the state in compressor mode.
  • Figure 3 represents the view of the cams and auxiliary cams in direction of camshaft axis.
  • Figure 4 represents the engine in broken out section according to the example version,
  • Figure 5 represents ground plan view and
  • Figure 6 represents the side view of the cams and rocker arms according to the example concept.
  • Figure 7 shows schematic motor arrangement according to the example concept including the accumulation tank in compressor mode.
  • the combustion engine according to the Example 1 is four strokes one and is built in a motor vehicle. This engine contains four pistons K) sliding in four cylinders H. All pistons 10 are coupled with the crankshaft 12 by means of the piston rods 23.
  • the engine contains the air intake manifold H and the exhaust manifold
  • each piston JO there belongs one suction valve JJ . with the rocker arm 6 and the cam 4 and one exhaust valve 16 with the rocker arm 6 and the cam 4. All cams 4 are axially aligned on the camshaft 3_.
  • This engine is configured so that it is possible to switch from the combustion engine mode to the compressor/pneumatic motor mode and back in a simple way during operation. After switching the combustion engine into the compressor/pneumatic motor mode, changeover of valve controls occurs so that the mode "suction-compression-expansion-exhaust" changes to the mode "suction-exhaust".
  • the engine is provided with the auxiliary rocker arms 2 and the auxiliary cams 1 that are also situated on the camshaft 3.
  • the rocker arm 6 and the auxiliary rocker arm 2 that belong to the same valve J_5, 16, namely identically both to the suction valve JL5 and the exhaust valve 16, the rocker arms 2, 6 are situated parallel side by side and are provided with the two part device 7 for their interconnection.
  • the two part device 7 for interconnection of the rocker arms 2, 6 according to this example consists of the solenoid 5. with the slide out pin 17_ building a core of this solenoid 5 .
  • the motor vehicle in that the combustion engine according to the Example 1 is used is further provided with the accumulation tank 8 that is connected through the suction control valve 20 and the exhaust control valve 21 to the exhaust manifold 14 and to the air intake manifold Jj>, whereas the suction control valve 20 connects the air intake manifold 15 either to the accumulation tank 8 or to the opening into ambient atmosphere and the exhaust control valve 2J . connects the exhaust manifold 14 either to the accumulation tank 8 . or to exhaust.
  • the engine is further provided with the fuel supply valve 9.
  • the driver can switch the switch in to moving off position in the course of moving off and during travel, wherewith there occurs connection of the accumulation tank 8 .
  • the exhaust control valve 2J connects the exhaust manifold 14 to exhaust. Both parts of the device 7 for connection of the rocker arms 2, 6 remain connected.
  • the driver switches the switch 19 into travel position, wherewith there occurs opening of the fuel supply valve 9, connection of the air intake manifold H to ambient atmosphere and disconnection of the rocker arms 2, 6.
  • Example 2 differs from Example 1 in that switching modes of valves is computer controlled, according to pressure in the accumulation tank and according to that, if gas or brake pedal is depressed.
  • Example 3 differs from the Example 1 in that the engine further contains the turbocharger, in which pressure air is led in the course of moving off, at low revolutions or during travel.
  • the invention can be used at all machines powered by combustion engines and other drives, if at their operation there occurs repeated mass setting in motion, energy accumulation due to this motion and subsequent foiling of this energy through braking, namely not only at means of transport, but also e.g. at lifts, hoist towers or cableways, fly over carriers or carousel spectacles.

Abstract

The combustion engine convertible to a compressor or pneumatic motor, containing at least one piston sliding in the cylinder, air intake manifold, exhaust manifold, at least one suction valve (15) and at least one exhaust valve, rocker arms and the camshaft with at least one cam, whereas in addition to cam (4) and rocker arm (6) belong to each valve (15) auxiliary cam (1) and auxiliary rock arm (2), whereas each pair of rocker arms (6, 2) pertaining to the same valve (15) is provided with the device (7) for their interconnecting. The cam (4) and auxiliary cam (1) pertaining to the same valve (15) can be situated on the common camshaft (3) and are turned to each other by 180°. The device (7) for interconnection of the rocker arm (6) and auxiliary rocker arm (2) can consist of two disconnectable parts, where each part is situated on another rocker arm (6, 2). The first part of the device (7) for interconnection of rocker arms (6, 2) can contain a slide-out pin oppositely situated to a hole representing the second part of the device (7) for interconnection of rocker arms (6, 2).

Description

Combustion Engine Convertible to Compressor or Pneumatic Motor
Technical Field
The invention concerns a combustion engine that can be also used as a drive unit of pneumatic drive or as a compressor and solves both generating torque and producing compressed air by the same device.
-Description of Prior Art
It is known that combustion engines of standard design contain at least one piston, which slides in a cylinder in that increased pressure arises in piston's upper dead centre as result of expansion of combustion gases in the course of combustion of gas or liquid fuel. Gas expansion causes piston motion from the upper to bottom dead centre and thus conversion of pressure energy to kinetic energy. The piston is coupled with crankshaft through a piston rod. The gas inlet and outlet from and into cylinder space is controlled by means of valves, governing of which depends on position of the rocker arm bearing on an involved cam of the camshaft that is coupled with the crankshaft. At least one piston sliding in the cylinder and control of the gas inlet and outlet from and into the space between the piston and cylinder head by means of valves is also a basis of some compressors and pneumatic motors. The main difference between a combustion engine and compressor or pneumatic motor consists in mode of valve opening and closing. Operation of four stroke combustion engine is series of ever repeating sequences of following processes: Suction when the suction valve is open and the piston moves to bottom dead centre, compression, when both valves are closed and the piston moves to upper dead centre, expansion, when both valves are closed and the piston is pressed from upper dead centre to bottom dead centre due to increased pressure at fuel combustion, and exhaust, when the exhaust valve is open and the piston moves to upper dead centre. The combustion engines cannot be used for gas compression.
There are known compressors intended for gas compression that contain piston sliding inside the cylinder, where the inner cylinder space is connected to the inlet and outlet manifold through the control valves. The piston of such compressor is coupled with another mechanism mediating motion transfer between the piston arid source, which can be for example a combustion engine or electric motor. Compressors can be designed so that they can be used as pneumatic motors. The compressor cannot be used as a combustion engine.
Disclosure of Invention
The stated disadvantages are solved with a combustion engine convertible to a compressor or pneumatic motor, containing at least one piston sliding in a cylinder, air intake manifold, exhaust manifold, at least one suction valve and at least one exhaust valve, rocker arm and camshaft with at least one cam. Principle of the invention is that in addition to cam and rocker arm belong to each valve auxiliary cam and auxiliary rocker arm, whereas each pair of rocker arms is provided with a device for their interconnecting. An advantageous alternative is when the cam and auxiliary cam pertaining to the same valve are on a common camshaft and are turned to each other by 180°. According to the next alternative, the device for interconnection of the rocker arm and auxiliary rocker arm consists of two disconnectable parts, whereas each part is situated on another rocker arm. According to further alternative, the first part of the device (7) for interconnection of rocker arms contains a slide out pin oppositely situated to a hole representing the second part of the device for interconnection of rocker arms.
Advantage of this invention is possibility to use one device on the one hand as a mechanic drive and on the other hand as a machine for compressed gas production, for example air, for the purpose of accumulation of inertial energy that would be otherwise foiled through unnecessary braking. In case of use of the engine according to the invention during vehicle travel, it is possible to use resistance that engine counteracts in compressor mode to braking, wherewith on the one hand wear of brake elements reduces and on the other hand otherwise foiled energy accumulates in form of compressed air that can be used as an energy source of auxiliary vehicle drive later on while moving off and travelling, when the same combustion engine can be switched into mode of pneumatic motor or auxiliary pneumatic motor, or for instant provision of overpressure through a turbocharged engine while starting and at low revolutions, when the turbocharger is not functional, or for turbo-charging of motor with higher pressure, than the turbocharger is able to produce.
Figure Description in Drawings
Figures 1 and 2 represent schematic view of the valve control, whereas Figure 1 represents the state in combustion engine mode, while Figure 2 represents the state in compressor mode. Figure 3 represents the view of the cams and auxiliary cams in direction of camshaft axis. Figure 4 represents the engine in broken out section according to the example version, Figure 5 represents ground plan view and Figure 6 represents the side view of the cams and rocker arms according to the example concept. Figure 7 shows schematic motor arrangement according to the example concept including the accumulation tank in compressor mode.
Examples of Embodiment
Example 1
The combustion engine according to the Example 1 is four strokes one and is built in a motor vehicle. This engine contains four pistons K) sliding in four cylinders H. All pistons 10 are coupled with the crankshaft 12 by means of the piston rods 23.
Furthermore, the engine contains the air intake manifold H and the exhaust manifold
14. To each piston JO there belongs one suction valve JJ. with the rocker arm 6 and the cam 4 and one exhaust valve 16 with the rocker arm 6 and the cam 4. All cams 4 are axially aligned on the camshaft 3_. This engine is configured so that it is possible to switch from the combustion engine mode to the compressor/pneumatic motor mode and back in a simple way during operation. After switching the combustion engine into the compressor/pneumatic motor mode, changeover of valve controls occurs so that the mode "suction-compression-expansion-exhaust" changes to the mode "suction-exhaust". To convert the stroke "compression" to the stroke "exhaust" and the stroke ,,expansion" to the stroke "suction", the engine is provided with the auxiliary rocker arms 2 and the auxiliary cams 1 that are also situated on the camshaft 3. The rocker arm 6 and the auxiliary rocker arm 2 that belong to the same valve J_5, 16, namely identically both to the suction valve JL5 and the exhaust valve 16, the rocker arms 2, 6 are situated parallel side by side and are provided with the two part device 7 for their interconnection. The two part device 7 for interconnection of the rocker arms 2, 6 according to this example consists of the solenoid 5. with the slide out pin 17_ building a core of this solenoid 5., which is situated on the rocker arm 6, and of the hole JjS, which is made in the auxiliary rocker arm 2 and is situated oppositely to the slide out pin 17. The motor vehicle in that the combustion engine according to the Example 1 is used, is further provided with the accumulation tank 8 that is connected through the suction control valve 20 and the exhaust control valve 21 to the exhaust manifold 14 and to the air intake manifold Jj>, whereas the suction control valve 20 connects the air intake manifold 15 either to the accumulation tank 8 or to the opening into ambient atmosphere and the exhaust control valve 2J. connects the exhaust manifold 14 either to the accumulation tank 8. or to exhaust. The engine is further provided with the fuel supply valve 9.
During normal travel, fuel is led into the air intake manifold H and both parts of the device 7 for interconnection of the rocker arms 2, 6 are disconnected. Each cylinder 11 with the piston K) works in four strokes mode "suction-compression-expansion- exhaust". The accumulation tank S is disconnected both from the air intake manifold H and from the exhaust manifold 14. In the instant of braking the driver switches the switch 19 placed on steering wheel into the braking mode, wherewith there occurs closing of the fuel supply valve 9, insertion of the slide out pins Yt into the openings 18 and there through connection of the rocker arms 6 with the auxiliary rocker arms 2 and connection of the accumulation tank 8. to the exhaust manifold JA The suction control valve 20 connects the manifold 13. to ambient atmosphere. If sufficient pressure is in the accumulation tank 8, the driver can switch the switch in to moving off position in the course of moving off and during travel, wherewith there occurs connection of the accumulation tank 8. to the air intake manifold H, and the combustion engine according to this invention works as a pneumatic motor. The exhaust control valve 2J, connects the exhaust manifold 14 to exhaust. Both parts of the device 7 for connection of the rocker arms 2, 6 remain connected. At pressure drop in the accumulation tank 8 below the specified value, the driver switches the switch 19 into travel position, wherewith there occurs opening of the fuel supply valve 9, connection of the air intake manifold H to ambient atmosphere and disconnection of the rocker arms 2, 6.
Example 2
Example 2 differs from Example 1 in that switching modes of valves is computer controlled, according to pressure in the accumulation tank and according to that, if gas or brake pedal is depressed.
Example 3
Example 3 differs from the Example 1 in that the engine further contains the turbocharger, in which pressure air is led in the course of moving off, at low revolutions or during travel.
Industrial Utility
The invention can be used at all machines powered by combustion engines and other drives, if at their operation there occurs repeated mass setting in motion, energy accumulation due to this motion and subsequent foiling of this energy through braking, namely not only at means of transport, but also e.g. at lifts, hoist towers or cableways, fly over carriers or carousel spectacles.

Claims

Claims 1. The combustion engine convertible to a compressor or pneumatic motor, containing at least one piston (10) sliding in the cylinder (11), air intake manifold (13), exhaust manifold (14), at least one suction valve (15) and at least one exhaust valve (16), rocker arm (6) and the camshaft (3) with at least one cam (4) characterized in that in addition to cam (4) and rocker arm (6) belong to each valve (15) auxiliary cam (1) and auxiliary rocker arm (2), whereas each pair of rocker arms (6, 2) is provided with the device (7) for their interconnecting.
2. The combustion engine according to the claim 1 characterized in that the cam (4) and auxiliary cam (1) pertaining to the same valve (15, 16) are on the common camshaft (3) and are turned to each other by 180°.
3. The combustion engine convertible to a compressor or pneumatic motor according to the claim 1 characterized in that the device (7) for interconnection of the rocker arm (6) and auxiliary rocker arm (2) consists of two disconnectable parts, where each part is situated on another rocker arm (6, 2).
4. The combustion engine convertible to a compressor or pneumatic motor according to the claim 2 characterized in that the first part of the device (7) for interconnection of the rocker arms (6, 2) contains the slide out pin (17) oppositely situated to the opening (18) representing the second part of the device (7) for interconnection of the rocker arms (6, 2).
PCT/CZ2007/000110 2007-08-16 2007-12-17 Combustion engine convertible to compressor or pneumatic motor WO2009021469A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ20070551A CZ2007551A3 (en) 2007-08-16 2007-08-16 Internal combustion engine reconstructed to compressor or air-operated motor
CZPV2007-551 2007-08-16

Publications (1)

Publication Number Publication Date
WO2009021469A1 true WO2009021469A1 (en) 2009-02-19

Family

ID=39365737

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CZ2007/000110 WO2009021469A1 (en) 2007-08-16 2007-12-17 Combustion engine convertible to compressor or pneumatic motor

Country Status (2)

Country Link
CZ (1) CZ2007551A3 (en)
WO (1) WO2009021469A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104937268A (en) * 2012-12-18 2015-09-23 艾默生环境优化技术有限公司 Reciprocating compressor with vapor injection system
CN110005500A (en) * 2019-04-03 2019-07-12 宁波奥晟机械有限公司 A kind of four-stroke engine that can arbitrarily overturn

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19735822C1 (en) * 1997-08-18 1998-10-01 Daimler Benz Ag Internal combustion engine with control device e.g. for motor vehicle
US20050027413A1 (en) * 2003-08-01 2005-02-03 Honda Motor Co., Ltd. Control system for hybrid vehicle
WO2006004591A2 (en) * 2004-05-14 2006-01-12 Jacobs Vehicle Systems, Inc. Rocker arm system for engine valve actuation
US20060005796A1 (en) * 2004-05-06 2006-01-12 Robb Janak Primary and offset actuator rocker arms for engine valve actuation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19735822C1 (en) * 1997-08-18 1998-10-01 Daimler Benz Ag Internal combustion engine with control device e.g. for motor vehicle
US20050027413A1 (en) * 2003-08-01 2005-02-03 Honda Motor Co., Ltd. Control system for hybrid vehicle
US20060005796A1 (en) * 2004-05-06 2006-01-12 Robb Janak Primary and offset actuator rocker arms for engine valve actuation
WO2006004591A2 (en) * 2004-05-14 2006-01-12 Jacobs Vehicle Systems, Inc. Rocker arm system for engine valve actuation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104937268A (en) * 2012-12-18 2015-09-23 艾默生环境优化技术有限公司 Reciprocating compressor with vapor injection system
US10280918B2 (en) 2012-12-18 2019-05-07 Emerson Climate Technologies, Inc. Reciprocating compressor with vapor injection system
US10352308B2 (en) 2012-12-18 2019-07-16 Emerson Climate Technologies, Inc. Reciprocating compressor with vapor injection system
CN110005500A (en) * 2019-04-03 2019-07-12 宁波奥晟机械有限公司 A kind of four-stroke engine that can arbitrarily overturn
CN110005500B (en) * 2019-04-03 2024-04-16 宁波奥晟机械有限公司 Four-stroke engine capable of being turned over at will

Also Published As

Publication number Publication date
CZ2007551A3 (en) 2009-02-25

Similar Documents

Publication Publication Date Title
CN107023342A (en) A kind of change pattern valve-driving system
CN107060941A (en) A kind of twin cam shaft switch fulcrum type becomes pattern valve-driving system
CN105829678A (en) Internal combustion engine
CN101234638A (en) Hybrid vehicle with engine power cylinder deactivation
CN107060942A (en) A kind of compact multimode formula valve-driving system
CN101078375A (en) Gasoline engine valve lift and phase variable system
CN104314636B (en) A kind of engine braking apparatus
CN104454178A (en) Engine braking method
CN100545425C (en) The method of operating internal-combustion engines
CN108049931B (en) Variable-mode continuously variable valve mechanism
CN101619663A (en) Distribution cam mechanism of two-stroke and four-stroke switching internal-combustion engine
CN107849992B (en) Display device
CN103608558A (en) Multi-cylinder piston engine
CN102465757A (en) Variable displacement engine assembly including partial boost arrangement
CN204476493U (en) Duplicated crank engine braking apparatus
CN105507974A (en) Auxiliary valve actuating mechanism of engine
CN104314633B (en) Variable valve driving mechanism of engine
WO2009021469A1 (en) Combustion engine convertible to compressor or pneumatic motor
CN204163782U (en) Engine braking apparatus
CN1922395A (en) System and method for valve actuation
CN202300564U (en) Braking energy recovery system based on compressed air circulation of engine
WO2015010169A1 (en) Piston machine
CN202810988U (en) Continuously variable valve timing mechanism
JP3097674U (en) Piston air engine
CN104454158B (en) Variable-stroke pneumatic internal combustion hybrid power engine and running method thereof

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07855985

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07855985

Country of ref document: EP

Kind code of ref document: A1