EP3726020A1 - Système de refroidissement - Google Patents

Système de refroidissement Download PDF

Info

Publication number
EP3726020A1
EP3726020A1 EP20158256.6A EP20158256A EP3726020A1 EP 3726020 A1 EP3726020 A1 EP 3726020A1 EP 20158256 A EP20158256 A EP 20158256A EP 3726020 A1 EP3726020 A1 EP 3726020A1
Authority
EP
European Patent Office
Prior art keywords
cooling system
heat exchanging
cooling
exchanging device
ring
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.)
Pending
Application number
EP20158256.6A
Other languages
German (de)
English (en)
Inventor
Prasad Raghavendra
Balaji Sreenivasan
Manish Garg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TVS Motor Co Ltd
Original Assignee
TVS Motor Co Ltd
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 TVS Motor Co Ltd filed Critical TVS Motor Co Ltd
Publication of EP3726020A1 publication Critical patent/EP3726020A1/fr
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/12—Filtering, cooling, or silencing cooling-air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • F04D29/326—Rotors specially for elastic fluids for axial flow pumps for axial flow fans comprising a rotating shroud
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2050/00—Applications
    • F01P2050/16—Motor-cycles

Definitions

  • the present subject matter relates generally to a cooling system. More particularly but not specifically, the present invention relates to the cooling system for a vehicle.
  • an automobile in general, includes an engine block coupled with other components and suspended on a body frame with pair of wheels.
  • Such automobile often referred to as a two-wheeled vehicle or a three-wheeled vehicle or a multi-wheeled vehicle, may include a vehicle body cover which surrounds the engine to improve the outer appearance of the vehicle and protect the component elements of the vehicle.
  • various models of automobile designs have been developed.
  • pair of wheels is described here to operate an automobile.
  • the pair of wheels is installed in a step through type two wheeled vehicle colloquially called as scooter.
  • the pair of wheels may be mounted in two wheeled vehicles in different arrangements.
  • such pair of wheels is disposed at extreme ends of the step through type two wheeled vehicle. It is contemplated that the concepts of the present invention may be applied to other types of vehicles and other types of casting methods within the spirit and scope of this invention.
  • front and rear, and left and right directions refer to front and rear, and left and right directions as seen from a rear portion of the vehicle and looking forward.
  • front and rear, and left and right directions as seen from a rear portion of the vehicle and looking forward.
  • the detailed explanation of the constitution of parts other than the present invention which constitutes an essential part has been omitted at suitable places.
  • a heat exchanging device is usually employed in such liquid cooling systems wherein the hot coolant is cooled and the cooled coolant is circulated back for the next cycle.
  • the coolant is made to pass through long circuitous passages and constant flow of air is passed through its core to extract the heat.
  • the flow of air is obtained when the vehicle is moving by taking advantage of the impinging air flow from a front direction and assisted by a cooling system which helps draws in the air and direct the hot air out of the heat exchanging device after circulation especially when the vehicle is running at low speed, as at higher speed of the vehicle the natural air coming from the front is sufficient to cool the coolant circulating through the hat exchanging device.
  • the heat exchanging device is disposed towards the front of the vehicle to take advantage of the incoming air from the front during motion. Behind the heat exchanging device, the cooling system is present to cool the coolant circulating through the heat exchanging device for controlling the IC engine temperature.
  • large side panels enclose the two sides of the vehicle in order to give a sporty look.
  • the side panels enclose the heat exchanging device, the cooling system to form a substantial central region on the front to permit ingress of air and exits on either side behind on the rear of the side panels to permit hot air exit after passing through the heat exchanging device and the cooling system.
  • due to the presence of the side panels and other aesthetic value parts there is a limited area present for the entry of the air to cool the IC engine. Hence, there is a requirement of high cooling rate from the cooling system to cool the IC engine and control the IC engine temperature.
  • the heat exchanging device is provided to cool the IC engine and the cooling system is provided to cool the heat exchanging device. So, for getting high cooling rate from the cooling system for the heat exchanging device, there is a need of developing an efficient cooling system without making any layout changes in the vehicle & having a cooling system of compact size and dimensions.
  • the cooling system comprises a shroud, a motor and a cooling fan.
  • the cooling fan operates at a certain operating speed and generates air flow for air suction coming out from the heat exchanging device.
  • the cooling fan is having plurality of blades and the plurality of blades comprises a first end and a second end which is attached with a ring.
  • the cooling system efficiency is directly proportional to the air flow coming out from the cooling fan. Because when more air flow comes out from the cooling fan then cooling of coolant circulating through the heat exchanging device takes place rapidly. Hence, in order to increase the cooling rate, it is recommended to have higher cooling fan air flow rate.
  • the high cooling rate is achieved by increasing the cooling fan dimension. But due to the presence of the side panels and other aesthetic value parts there is a layout space constraint for increasing the cooling fan or the cooling system size and dimension.
  • the cooling system operations are controlled by a controller.
  • the controller in general considers coolant temperature as an input to control the cooling system operations. For example, if coolant temperature reaches to a predetermined temperature then the controller turns on the cooling system and the cooling system remains on until coolant temperature reaches up to another predetermined temperature. Now, in general the cooling system are having low cooling rate efficiency or low air flow rate then the life of the cooling system parts such as the shroud, the motor and the plurality of the blades of the cooling fan also comes down significantly.
  • the present subject matter is providing a cooling system configured to provide higher cooling rate without increasing the cooling system size and dimension.
  • the cooling system with the cooling fan which comprises plurality of blades and the plurality of blades having a first end and a second end. The second end is partially connected with a ring in accordance with a predetermined ratio between a ring height and a blade height for increasing the cooling rate from the cooling system with minimal noise and substantially optimum structural strength to the blade.
  • the cooling fan throws out more air coming out from the heat exchanging device.
  • the ring height is maintained smaller than the blade height to minimize the obstruction coming in the out flow of the air while leaving the cooling fan. This results in a significant increase in the air flow coming out from the cooling fan. Since, cooling system efficiency is directly proportional to the air flow coming out from the cooling fan, Therefore, the cooling efficiency of the cooling system for the heat exchanging device is also increased significantly without making any change in the size and dimension of the cooling fan or the cooling system.
  • plurality of ribs joining the shroud and a motor box is also reduced for providing better cooling efficiency by removing obstruction coming in the air flow coming out from the cooling fan.
  • the predetermined ratio also helps the blade to obtain substantially optimum structural strength against the flow of the air through the ring.
  • the cooling system is offering minimal resistance to the air going out from the cooling fan and this results in very minimal noise coming out from the cooling system. This ensures that sufficient cooling requirements are available all time around the internal combustion engine parts without causing any inconvenience to the rider.
  • the cooling efficiency or the cooling fan flow rate is increased significantly with substantially optimum structural strength to the blade, and helps in maintaining cooling requirements around the internal combustion engine.
  • the proposed subject matter is simple in construction and easy to remove and mount giving rise to improved serviceability.
  • the blade of the cooling fan is having substantially optimum structural strength to stand against the flow of the air.
  • Fig. 1 illustrates a side view of a two-wheeled straddle type vehicle (100), for example, a motorcycle (100), in accordance with an embodiment of the present subject matter.
  • a frontward direction is indicated by an arrow F, and a rearward direction indicated by an arrow R provided in the top of the figure.
  • the vehicle (100) is extending from the front direction to the rear direction along the vehicle longitudinal axis (F-R).
  • the two-wheeled vehicle (100) of the present subject matter comprises a frame assembly (102). All the portions of the frame assembly (102) are made of light weight metal alloy tubes joined together in a triangular form to reinforce and support the vehicular components.
  • the two-wheeled vehicle (100) includes a front wheel (104) steered by a handlebar (108) and a rear wheel (105) supported by a swing arm (113). Steering assembly parts including the visor assembly (131), the handlebar (108) and the front wheel (104) are supported for pivotal steering operation on a head tube ( 123 -shown in Fig.2 ) at the front end of the vehicle body frame (102).
  • a rider seat (109) for a rider and a seat for a pillion rider (110) are placed rearward to a fuel tank (114).
  • the IC engine (101) is disposed below the fuel tank (114) on the front portion of the two-wheeled vehicle.
  • a front fender (115) is provided above the front wheel (104) to avoid the vehicle occupants from being splashed with mud.
  • a rear fender (116) is placed above the rear wheel (105), and to the outer side in the radial direction of rear wheel (105).
  • the rear fender (116) inhibits rainwater or the like from being thrown up by rear wheel (105).
  • the swing arm (113) along with a rear suspension assembly (107) is supported at a rear portion (R) thereof for pivotal motion by the frame assembly (102).
  • a front suspension assembly (106) for providing better ride comfort to the rider. In general terms, both the front suspension (106) and rear suspension (107) act as shock absorbers and help cushion the vehicle on uneven roads.
  • the two-wheeled vehicle (100) further comprises of a headlamp (111), a tail lamp assembly (112) and at least two turn signal lamps.
  • the two-wheeled vehicle (100) comprises two large side panels (120) (only one shown) disposed on either side enclosing the sides of the front portion (F) of the two-wheeled vehicle (100).
  • the side panel (120) extends from the visor assembly (131) on the upper region till the IC engine (101) on the lower region almost enclosing the all components supported by the main frame portion (103) of the two-wheeled vehicle (101). Due to the presence of the side panel (120) and other style parts there is only a major way (150) is available for air to enter inside the vehicle (100) for cooling the IC engine (101). Through the major way (150) the air is drawn from a small inlet opening (132) below the headlamp assembly (111) and above the front fender (115).
  • Fig. 2 illustrates the isometric view of the two-wheeled vehicle (100) with a side panel (120) and other outer body members of the two-wheeled vehicle which are removed according to the embodiment of the present subject matter.
  • the frame assembly (102) is the trellis type frame, and comprises the head tube (123), a main frame portion (103), a down frame portion (124), and a rear frame portion (125).
  • the front suspension assembly (106) includes a pair of front forks (106a and 106b ).
  • a heat exchanging device (302) disposed in the front portion of the two-wheeled vehicle (100) when the side panel (120) is removed.
  • the heat exchanging device (302) functions to exchange heat of flowing coolant with the flowing air and forms part of the engine coolant cooling system.
  • a cooling system (300) is disposed towards the rear of the heat exchanging device (302) and on operation draws air from the atmosphere through the heat exchanging device (302) thus extracting heat from the engine coolant.
  • the air is drawn from the small inlet opening (132) through the major way (150) below the headlamp assembly (111) and above the front fender (115).
  • the air being drawn inside passes through the heat exchanging device (302) and flows downstream of the cooling system (300) wherein an air deflecting structure (400) is disposed.
  • the heat exchanging device (302) is mounted to the frame assembly (102) with aid of bosses disposed on the upper part of the heat exchanging device (302) and the cooling system (300) is mounted on rear part of the heat exchanging device (302).
  • Fig. 3 illustrates a rear view of the cooling system (300) with the heat exchanging device (302) in accordance with the present subject matter.
  • the cooling system (300) is used in the automobile (100) to control the internal combustion engine (101) temperature.
  • the cooling system (300) is used in the two-wheeled vehicle (100) for cooling a coolant flowing through the heat exchanging device (302).
  • the heat exchanging device (302) is to cool and control the internal combustion engine (101) temperature.
  • the cooling system (300) is located in the automobile (300) behind the heat exchanging device (302) which is also interchangeably termed as a radiator assembly (302).
  • the heat exchanging device (302) receives the coolant from the internal combustion engine (101).
  • the coolant is used in the internal combustion engine (101) to extract the heat generated inside the internal combustion engine (101). Once, the coolant is passed through the heat exchanging device (302).
  • the heat exchanging device (302) is use to transfer the temperature of coolant to the atmospheric air through heat exchange process which includes forced cooling.
  • the cooling system (300) in general comprises a shroud (320) with plurality of ribs (310), a motor (315) and a cooling fan (301) with a ring (305).
  • the cooling fan (301) is interchangeably termed as a radiator fan (301).
  • the cooling fan (301) operates at a certain operating speed and generated air flow.
  • the cooling system (300) efficiency is directly proportional to the air flow coming out from the cooling fan (304). In order to increase the cooling rate, it is recommended to have higher fan air flow rate.
  • Fig. 4 illustrates the exploded side view of the cooling system (300) with the heat exchanging device (302) in accordance with the present subject matter.
  • a frontward direction is indicated by an arrow F, and a rearward direction indicated by an arrow R provided in the top of the figure.
  • the vehicle (100) is extending from the front direction to the rear direction along the vehicle longitudinal axis (F-R).
  • the heat exchanging device (302) is in front of the vehicle ahead of the cooling system (300).
  • the cooling fan (301) is having a hub (333- shown in Fig. 5b ) and plurality of blades (304).
  • the plurality of blades (304) comprises a first end (304a) and a second end (304b).
  • the first end (304a) of plurality of blades (304) is disposed towards the shroud (320) and second end (304b) of plurality of blades (304) is disposed towards the heat exchanging device (302).
  • the second end (304b) is in partial contact with the ring (305) in accordance with a predetermined ratio (b/a- shown in Fig. 5a ) between a ring height (b- shown in Fig. 5a ) and a blade height (a-- shown in Fig. 5a ) for increasing cooling rate from said cooling system (300) with minimal noise.
  • the present subject matter is providing higher cooling fan (301) air flow rate through the predetermined ratio (b/a -shown in Fig. 5a ) between the ring height (b- shown in Fig. 5a ) and the blade height (a -shown in Fig. 5a ) without making any change in the size of the cooling system (300).
  • maintaining the size of the cooling system (300) is very much essential due to the presence of the side panels and other aesthetic value parts in the two-wheeled vehicle (100).
  • the ring height (b) is optimized for better flow rate with minimal noise and maximum mechanical strength to avoid blade distortion over a period of time.
  • the ring (305) is provided on a suction side edge of the plurality of blades (304) of the cooling fan (301), such that a minimum possible obstruction to the outflow from the fan is achieved.
  • the cooling system (300) disclosed in the present invention provides the cooling fan (301) for throwing out more air coming out from the heat exchanging device (302).
  • the ring height (b -shown in Fig. 5a ) is smaller than the blade height (a- shown in Fig. 5a ) to minimize the obstruction coming in the out flow of the air while leaving the cooling fan (301).
  • cooling system efficiency is directly proportional to the air flow coming out from the cooling fan (301). Therefore, the cooling efficiency of the cooling system for the heat exchanging device is also increased significantly without making any change in the size and dimension of the cooling fan or the cooling system (300).
  • the plurality of ribs (310) joining the shroud (320) and a motor box (315) is also reduced for providing better cooling efficiency by removing obstruction coming in the air flow coming out from the cooling fan (301).
  • the predetermined ratio (b/a -shown in Fig. 5a ) also helps the plurality of blades (304) to obtain substantially optimum structural strength against the flow of the air through the ring (305).
  • the cooling system (300) is offering minimal resistance to the air going out from the cooling fan (301) and this result in very minimal noise coming out from the cooling system. This ensures that sufficient cooling requirements are available all time around the internal combustion engine parts without causing any inconvenience to the rider.
  • the cooling system (300) has the shroud (320) with a shroud height (c).
  • the shroud height (c) is equal or less than the ring height (b- shown in Fig. 5a ) for offering no obstruction in the air flow coming out from the cooling fan (301).
  • the shroud height (c) is longitudinally extending only towards the heat exchanging device (302) and is restricted for extending in the other direction of the heat exchanging device (302) for offering no obstruction in the air flow coming out from the cooling fan (301).
  • the shroud height (c) is longitudinally extending only in the front direction (F) of the vehicle (100).
  • the cooling system (300) is controlled by a controller.
  • the controller in general considers coolant temperature as an input to control the cooling system (300) operations.
  • the cooling system (300) the cooling fan (301) is based on the predetermined ratio (b/a -shown in Fig. 5a ) to providing more air flow going out from the cooling fan (301) and this increases the air flow rate and the cooling efficiency. Due to the increased cooling efficiency, the cooling fan (301) is able to through-out more air with less rotation while maintaining controlling coolant temperature of the coolant flowing in the heat exchanging device (302). When the efficient cooling fan (301) is running less time, then the motor (303) is also running less for controlling coolant temperature.
  • Fig. 5a, 5b, and 5c illustrates a top view, a front view and a side view of the cooling fan (301) in accordance with the present subject matter.
  • the cooling fan (301) is having the hub (333) and plurality of blades (304).
  • the plurality of blades (304) comprises the first end (304a) and the second end (304b).
  • the first end (304a) of plurality of blades (304) is in contact with the hub (333).
  • the second end (304b) is in partial contact with the ring (305) in accordance with the predetermined ratio (b/a) between the ring height (b) and the blade height (a) for increasing cooling rate from said cooling system (300) with minimal noise.
  • the predetermined ratio (b/a) between the ring height (b) and the blade height (a) ensures that minimal obstruction comes in the air flow coming out from the cooling fan (301) with substantially optimum structural strength to the plurality of blades (304).
  • the predetermined ratio (b/a) value is less than or equal to 0.80
  • Fig. 6a depicts exemplary curve for cooling efficiency plotted against ratio between ring height (b) and blade height (a), in accordance with another embodiment of the present subject matter.
  • the ratio between ring height (b) and blade height (a) lies in the range of the predetermined ratio (b/a) which is less than or equal to 0.80 then the air coming out from the cooling system (300) increases significantly because under the head of the predetermined ratio (b/a) the ring height (b) is smaller than the blade height (a) to provide more space to the air while leaving the cooling fan (301) with substantially optimum structural strength to the plurality of blades (304) against the flow of the air through the ring (305).
  • less number of the plurality of ribs (310) is also for providing better cooling efficiency by removing obstruction coming in the air flow coming out from the cooling fan (301). Further, under the head of the predetermined ratio (b/a) the cooling efficiency of the cooling system (300) for the heat exchanging device (302) increases significantly without increasing the size of the cooling system (300) or the cooling fan (301).
  • Fig. 6b depicts exemplary curve for noise level plotted against ratio between ring height (b) and blade height (a), in accordance with another embodiment of the present subject matter.
  • the ratio between ring height (b) and blade height (a) lies in the range of the predetermined ratio (b/a) which is less than or equal to 0.80
  • the noise level coming out from the cooling system (300) reduces significantly because under the head of the predetermined ratio (b/a) the ring height (b) is smaller than the blade height (a) to minimize the obstruction coming in the out flow of the air while leaving the cooling fan (301).
  • the presence of less number of the plurality of ribs (310) is providing less obstruction to the air flow coming out from the cooling fan (301).
  • the predetermined ratio (b/a) value which is less than or equal to 0.80 provides the plurality of blades (304) substantially optimum structural strength against the flow of the air through the ring (305). This ensures that sufficient cooling requirements are available all time around the internal combustion engine parts without causing any noise related inconvenience to the rider.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP20158256.6A 2019-03-26 2020-02-19 Système de refroidissement Pending EP3726020A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IN201941011834 2019-03-26

Publications (1)

Publication Number Publication Date
EP3726020A1 true EP3726020A1 (fr) 2020-10-21

Family

ID=69784039

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20158256.6A Pending EP3726020A1 (fr) 2019-03-26 2020-02-19 Système de refroidissement

Country Status (1)

Country Link
EP (1) EP3726020A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4329946A (en) * 1979-10-09 1982-05-18 General Motors Corporation Shroud arrangement for engine cooling fan
JPH0533797A (ja) * 1991-07-29 1993-02-09 Nippondenso Co Ltd 押し込み式軸流フアン
JP2002201944A (ja) * 2000-12-28 2002-07-19 Toyo Radiator Co Ltd 軸流ファン
US9581073B2 (en) * 2013-02-27 2017-02-28 Honda Motor Co., Ltd. Radiator structure for two-wheeled vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4329946A (en) * 1979-10-09 1982-05-18 General Motors Corporation Shroud arrangement for engine cooling fan
JPH0533797A (ja) * 1991-07-29 1993-02-09 Nippondenso Co Ltd 押し込み式軸流フアン
JP2002201944A (ja) * 2000-12-28 2002-07-19 Toyo Radiator Co Ltd 軸流ファン
US9581073B2 (en) * 2013-02-27 2017-02-28 Honda Motor Co., Ltd. Radiator structure for two-wheeled vehicle

Similar Documents

Publication Publication Date Title
US7448461B2 (en) Cowl structure of vehicle
US7143854B2 (en) Motorcycle with a rear-mounted radiator
CN100450863C (zh) 车辆
US9694872B2 (en) Storage bin and radiator assembly for a vehicle
US10012130B2 (en) Cooling system
US4577720A (en) Motorcycle engine cooling system
US9771116B2 (en) Three wheeled vehicle
US4582158A (en) Motorcycle engine cooling system
WO2015036985A1 (fr) Ensemble radiateur pour véhicule
EP3348462A1 (fr) Véhicule à enfourcher
JP2018202932A (ja) 鞍乗り型車両
JP5576308B2 (ja) 鞍乗り型車両
EP3680157B1 (fr) Véhicule à enfourcher
EP3606808B1 (fr) Structure de déviation d'air pour un véhicule à deux roues
US4971171A (en) Engine cooling system for four-wheel all-terrain vehicle
EP3726020A1 (fr) Système de refroidissement
JP2019171993A (ja) 自動二輪車
US11413954B2 (en) Saddle riding type electric vehicle
US11180021B2 (en) Vehicle
JP4928980B2 (ja) 側車付車両
JP3083766B2 (ja) スクータ型車両のラジエータ配置構造
JPH06171568A (ja) 自動２輪車のエンジン冷却装置
JP4604850B2 (ja) 四輪ａｔｖ車
JP2023038648A (ja) 鞍乗型車両
EP4361010A1 (fr) Véhicule à selle

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20210421

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR