EP3891377A1 - Hand operated pump - Google Patents

Hand operated pump

Info

Publication number
EP3891377A1
EP3891377A1 EP19824189.5A EP19824189A EP3891377A1 EP 3891377 A1 EP3891377 A1 EP 3891377A1 EP 19824189 A EP19824189 A EP 19824189A EP 3891377 A1 EP3891377 A1 EP 3891377A1
Authority
EP
European Patent Office
Prior art keywords
piston
outer casing
hand operated
operated pump
pump
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.)
Granted
Application number
EP19824189.5A
Other languages
German (de)
French (fr)
Other versions
EP3891377B1 (en
EP3891377C0 (en
Inventor
Frantisek TUPEC
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.)
Tf Press SRO
Original Assignee
Tf Press SRO
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 Tf Press SRO filed Critical Tf Press SRO
Publication of EP3891377A1 publication Critical patent/EP3891377A1/en
Application granted granted Critical
Publication of EP3891377B1 publication Critical patent/EP3891377B1/en
Publication of EP3891377C0 publication Critical patent/EP3891377C0/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/06—Feeding by means of driven pumps mechanically driven
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/16—Feeding by means of driven pumps characterised by provision of personally-, e.g. manually-, operated pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/02—Packing the free space between cylinders and pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162—Adaptations of cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/14—Pumps characterised by muscle-power operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/06—Polyamides, e.g. NYLON

Definitions

  • the invention relates to hand operated pumps for the fuel systems of internal combustion engines.
  • a pressure lubrication pump is further known from patent CS 72182.
  • This pump consists of a container and a non-screwable rear cover and in which the lubricant is extruded by a piston by rotating the non-movable control screw with a handle, where the extruding cylinder is led on the guide screw by a groove along the body of the pump itself characterised by a guide spring of the bearing sleeve, rotatably mounted in the rear cover of the pump.
  • a pressure lubrication pump has a single suction intake and multiple oil delivery outlets in a cylinder with rotation of the piston and piston rod fit with a radial opening and acting as an oil distributor, with the pump cylinder having radial delivery holes arranged in a helix.
  • an accelerator pump carburettor slide which comprises a piston located within the main delivery system which is controlled by a volumetric needle located in the slide.
  • a volumetric needle located in the slide.
  • In the cylindrical piston in the direction of its axis are provided one or more flow holes between the upper and lower surfaces of the piston.
  • the goal of the invention is the design of a pump which is simpler in construction, while being made of a material which allows for fundamentally simpler technological processing, and with this, a significantly lower cost, while maintaining or improving functionality.
  • a hand operated pump for the fuel systems of internal combustion engines comprising an outer casing and a piston slidably disposed in its cavity, according to the invention whose basis is that between the outer casing and the piston there is at least one locking ring, with the outer casing, the piston and the locking ring being made of the same type of plastic, where between the outer casing and the piston there is mounted at least one sealing cuff, which is fixed in the piston and which is made of fluorine silicone.
  • the advantage of this construction is that the use of plastic for the manufacture of the main parts of the pump allows for simple and inexpensive production, while at the same time allowing for great shape variability of these main parts of the pump.
  • the outer casing, the piston and the locking ring are made of polyamide.
  • the outer casing and the piston are made of transparent plastic. The advantage is that, without the use of other complex measuring devices, the contents of the cavities of the pump can be determined.
  • the piston is secured against movement by threading arranged in the cavity of the outer casing.
  • the threading is a part of both plastic mouldings and is fully functional.
  • the outer casing is made of plastic containing blue pigment and the piston is made of plastic containing orange pigment.
  • the pump according to the invention enables very simple, fast, cheap and productive manufacture. Another advantage is shape variability. A great advantage is perfect functionality over a high temperature range and with this, associated shape stability.
  • the design of the pump according to the invention overcomes to some extent the technical preconception that the use of non-metallic materials in extreme environments, for example in the Arctic regions of Russia, in which there are great temperature differences, and in which internal combustion engines are used, is not possible.
  • Fig. 1 is a detailed cross-sectional view of the arrangement of the individual parts of the pump
  • Fig. 2 shows a frontal view of the piston head
  • Fig. 3 and Fig. 4 are perspective views of the overall design of the pump.
  • a hand operated pump for the fuel systems of internal combustion engines (Fig. 1 , Fig. 2, Fig. 3, Fig. 4), such as diesel engines of large trucks, comprising an outer casing 1 and within its cavity 4 is a slidably disposed piston 2.
  • the outer casing I is made of plastic containing blue pigment and the piston 2 is made of plastic containing orange pigment, the plastic in both cases being polyamide.
  • the outer casing I and the piston 2 can be made of transparent plastic, which is also polyamide.
  • the piston 2 is secured against movement by threading 3 arranged in the cavity 4 of the outer casing 1
  • sealing cuff 5 which is fixed in the piston 2 and which is rubber and is made of fluorine silicone containing green pigment.
  • a locking ring 6 which is fixed in the outer casing 1 and is made of a polyamide plastic.
  • a bearing ring 8 which rests on the front 9 of the outer casing 1, with the bearing ring 8 being rubber and made of silicone fluorine containing green pigment.
  • the pump according to the invention can be used as a pump of fuel systems of internal combustion engines, in particular diesel engines of heavy duty trucks operating in extreme climatic conditions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

A hand operated pump of an internal combustion engine fuel system comprising an outer casing (1) and in its cavity (4) a slidably disposed piston (2), wherein between the outer casing (1) and the piston (6) is mounted at least one locking ring (6), which is fixed in the outer casing (1), while the outer casing (1), the piston (2) and the locking ring (6) are made of the same type of plastic, when disposed between the outer casing (1) and the piston (2) is mounted at least one sealing cuff (5) which is fixed in the piston (2) and which is made of fluorine silicone.

Description

Hand operated pump
Technical Field
The invention relates to hand operated pumps for the fuel systems of internal combustion engines.
State of the Art
Currently, a whole range of pumps are known which are used in internal combustion engine systems.
From patent CS 22298 there is known a pump for combustibles for multi-cylinder injection internal combustion engines, specifically for vehicles.
From another patent CS 54403, there is known a fuel injection pump for internal combustion engines, where the pump cylinders, or steel bodies taking over for the cylindrical inserts, are embedded in a pump housing which is made of light metal.
A pressure lubrication pump is further known from patent CS 72182. This pump consists of a container and a non-screwable rear cover and in which the lubricant is extruded by a piston by rotating the non-movable control screw with a handle, where the extruding cylinder is led on the guide screw by a groove along the body of the pump itself characterised by a guide spring of the bearing sleeve, rotatably mounted in the rear cover of the pump.
And from another patent CS 82199 a pressure lubrication pump is known This pump has a single suction intake and multiple oil delivery outlets in a cylinder with rotation of the piston and piston rod fit with a radial opening and acting as an oil distributor, with the pump cylinder having radial delivery holes arranged in a helix.
From patent CS 263549 an accelerator pump carburettor slide is known which comprises a piston located within the main delivery system which is controlled by a volumetric needle located in the slide. In the cylindrical piston in the direction of its axis are provided one or more flow holes between the upper and lower surfaces of the piston.
The main disadvantage of all the above mentioned design solutions is that they have a relatively complex construction as a consequence of being made of various metal materials, the processing of which is relatively complex.
The goal of the invention is the design of a pump which is simpler in construction, while being made of a material which allows for fundamentally simpler technological processing, and with this, a significantly lower cost, while maintaining or improving functionality.
Principle of the Invention
The above-mentioned disadvantages are largely removed, and the objectives of the invention are fulfilled by a hand operated pump for the fuel systems of internal combustion engines comprising an outer casing and a piston slidably disposed in its cavity, according to the invention whose basis is that between the outer casing and the piston there is at least one locking ring, with the outer casing, the piston and the locking ring being made of the same type of plastic, where between the outer casing and the piston there is mounted at least one sealing cuff, which is fixed in the piston and which is made of fluorine silicone. The advantage of this construction is that the use of plastic for the manufacture of the main parts of the pump allows for simple and inexpensive production, while at the same time allowing for great shape variability of these main parts of the pump. It is further to advantage if there is, between the outer casing and the piston, mounted at least one sealing cuff which is fixed in the piston and which is to greatest advantage made of fluorine silicone. The advantage is once again excellent functionality, even under extreme temperature differences, and with this again being that it is an important design element, which is again made as non-metallic. The locking ring serves to precisely guide the piston in the cavity of the outer casing.
In the most advantageous design, the outer casing, the piston and the locking ring are made of polyamide.
It is to advantage that the outer casing and the piston are made of transparent plastic. The advantage is that, without the use of other complex measuring devices, the contents of the cavities of the pump can be determined.
To advantage, the piston is secured against movement by threading arranged in the cavity of the outer casing. The threading is a part of both plastic mouldings and is fully functional.
It is to further advantage that in the piston head there is mounted a bearing ring which rests on the front of the outer casing, with the bearing ring being rubber. The bearing ring is again to greatest advantage made of fluorine silicone.
In order to best identify the pump in the engine compartment, it is to advantage that the outer casing is made of plastic containing blue pigment and the piston is made of plastic containing orange pigment. The pump according to the invention enables very simple, fast, cheap and productive manufacture. Another advantage is shape variability. A great advantage is perfect functionality over a high temperature range and with this, associated shape stability. The design of the pump according to the invention overcomes to some extent the technical preconception that the use of non-metallic materials in extreme environments, for example in the Arctic regions of Russia, in which there are great temperature differences, and in which internal combustion engines are used, is not possible.
Overview of the Figures
The invention will be more closely elucidated using drawings, in which Fig. 1 is a detailed cross-sectional view of the arrangement of the individual parts of the pump; Fig. 2 shows a frontal view of the piston head; and Fig. 3 and Fig. 4 are perspective views of the overall design of the pump.
Examples of the Performance of the Invention
A hand operated pump for the fuel systems of internal combustion engines (Fig. 1 , Fig. 2, Fig. 3, Fig. 4), such as diesel engines of large trucks, comprising an outer casing 1 and within its cavity 4 is a slidably disposed piston 2.
The outer casing I is made of plastic containing blue pigment and the piston 2 is made of plastic containing orange pigment, the plastic in both cases being polyamide. Alternatively, the outer casing I and the piston 2 can be made of transparent plastic, which is also polyamide.
The piston 2 is secured against movement by threading 3 arranged in the cavity 4 of the outer casing 1
Between the outer casing 1 and the piston 2 there is a sealing cuff 5, which is fixed in the piston 2 and which is rubber and is made of fluorine silicone containing green pigment.
Between the outer casing I and the piston 2 there is further mounted a locking ring 6, which is fixed in the outer casing 1 and is made of a polyamide plastic.
In the head 7 of the piston 2 is mounted a bearing ring 8 , which rests on the front 9 of the outer casing 1, with the bearing ring 8 being rubber and made of silicone fluorine containing green pigment.
On the face 13 of the head 7 of the piston are arranged indentations 10. On the face 14 of the outer casing 1_ is arranged threading 11 the threading H being terminated by a groove 12 in which is mounted the sealing ring 15.
Behind the groove 12, on the outer casing 1 a casting 17 is mounted on which a hexagon 16 is arranged. industrial application
The pump according to the invention can be used as a pump of fuel systems of internal combustion engines, in particular diesel engines of heavy duty trucks operating in extreme climatic conditions.
List of Reference Marks
1 outer casing
2 piston
3 threading
4 cavity
5 sealing cuff
6 locking ring
7 head
8 bearing ring
9 front
10 indentations 11 thread 12 groove
13 front of the head
14 front of outer casing
15 sealing ring
16 hexagon
17 casting

Claims

Patent claims
1. A hand operated pump of a fuel system for internal combustion engines comprising an outer casing (1) and mounted within its cavity (4) a slidably disposed piston (2), characterised by that between the outer casing (1) and the piston (2) is mounted at least one locking ring (6) which is fixed in the outer casing (1), with the outer casing (1), the piston (2) and the locking ring (6) being made of the same type of plastic, while between the outer casing (1) and the piston (2) there is at least one sealing cuff (5) which is fixed in the piston (2) and is made of fluorine silicone.
2. The hand operated pump according to claim 1, characterised by that the outer casing (1), the piston (2) and the locking ring (6) are made of polyamide.
3. The hand operated pump according to claim 1 , characterised by that the outer casing (1) and the piston (2) are made of transparent plastic.
4. The hand operated pump according to one of the preceding claims, characterised by that the piston (2) is secured against movement by threading (3) arranged in the cavity (4) of the outer casing (2).
5. The hand operated pump according to any one of the preceding claims, characterised by that in the head (7) of the piston (2) a bearing ring (8) is mounted and rests on the front (7) of the outer casing (1),with the bearing ring (8) being rubber.
6. The hand operated pump according to claim 5, characterised by that the ring (8) is made of fluorine silicone.
7. The hand operated pump according to claim 1 , characterised by that the outer casing (1) is made of plastic containing blue pigment and the piston (2) is made of plastic containing orange pigment.
EP19824189.5A 2018-12-05 2019-12-03 Hand operated pump Active EP3891377B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ2018-679A CZ309417B6 (en) 2018-12-05 2018-12-05 Hand pump
PCT/CZ2019/000059 WO2020114529A1 (en) 2018-12-05 2019-12-03 Hand operated pump

Publications (3)

Publication Number Publication Date
EP3891377A1 true EP3891377A1 (en) 2021-10-13
EP3891377B1 EP3891377B1 (en) 2025-08-06
EP3891377C0 EP3891377C0 (en) 2025-08-06

Family

ID=68982418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19824189.5A Active EP3891377B1 (en) 2018-12-05 2019-12-03 Hand operated pump

Country Status (6)

Country Link
EP (1) EP3891377B1 (en)
CN (1) CN113167198A (en)
CZ (1) CZ309417B6 (en)
EA (1) EA202100180A1 (en)
PL (1) PL3891377T3 (en)
WO (1) WO2020114529A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019130843A1 (en) * 2019-11-15 2021-05-20 Danfoss A/S Piston of a hydraulic piston machine and hydraulic piston machine
DE102019130844A1 (en) 2019-11-15 2021-05-20 Danfoss A/S Hydraulic piston machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4747760A (en) * 1985-09-27 1988-05-31 Robert Bosch Gmbh Hand-actuatable pump for feed pumps of fuel injection systems for internal combustion engines

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
US5664532A (en) * 1996-03-22 1997-09-09 August; Rex David Universal fuel priming system
US8631777B2 (en) * 2008-02-08 2014-01-21 Bluskies International Llc Rigid primer bulb pump
CN101387249A (en) * 2008-10-17 2009-03-18 薛肇江 Electric fuel pump
CN201496186U (en) * 2009-03-27 2010-06-02 广西淞森车用部件有限公司 Electric fuel pump plastic basic frame
CN201925067U (en) * 2011-01-14 2011-08-10 温州银皓泵业有限公司 Electric fuel pump
DE102012218364B4 (en) * 2012-10-09 2023-06-22 Robert Bosch Gmbh Fuel hand pump device
CN103013134B (en) * 2012-11-25 2016-03-30 安徽六方重联机械股份有限公司 A kind of Automobile engine fluorosilicone sealing-ring sizing material and preparation method thereof
WO2014095120A1 (en) * 2012-12-20 2014-06-26 Robert Bosch Gmbh Piston fuel pump for an internal combustion engine
DE102013226131A1 (en) * 2013-12-16 2015-06-18 Skf Lubrication Systems Germany Ag Piston pump device
DE102014202809A1 (en) * 2014-02-17 2015-08-20 Robert Bosch Gmbh Piston fuel pump for an internal combustion engine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4747760A (en) * 1985-09-27 1988-05-31 Robert Bosch Gmbh Hand-actuatable pump for feed pumps of fuel injection systems for internal combustion engines

Also Published As

Publication number Publication date
PL3891377T3 (en) 2025-12-15
WO2020114529A1 (en) 2020-06-11
EA202100180A1 (en) 2021-10-29
EP3891377B1 (en) 2025-08-06
CN113167198A (en) 2021-07-23
EP3891377C0 (en) 2025-08-06
CZ309417B6 (en) 2022-12-21
CZ2018679A3 (en) 2020-06-17

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