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
  • F01P7/00—Controlling of coolant flow
  • F01P7/14—Controlling of coolant flow the coolant being liquid
  • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
  • F04D15/0027—Varying behaviour or the very pump
  • F04D15/0038—Varying behaviour or the very pump by varying the effective cross-sectional area of flow through the rotor
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D13/00—Pumping installations or systems
  • F04D13/02—Units comprising pumps and their driving means
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
  • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
  • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
  • F05D2270/00—Control
  • F05D2270/60—Control system actuates means
  • F05D2270/64—Hydraulic actuators

Definitions

• the invention relates to a controlled via a pulley controllable coolant pump for internal combustion engines according to the preamble of claim 1.
• controllable coolant pumps for internal combustion engines which are driven by a pulley from the crankshaft of the internal combustion engine and in which the impeller is switchable, for example in connection with a friction pair, driven by the pump shaft.
• Friction disc of the magnetic coupling to the impeller transmissible, significantly increased drive torque.
• Pressing force causes, which results from the fact that between the friction disc and the impeller by an inflow ring and a Ausströmring for the
• Cooling medium built up a pressure supporting the negative pressure, and at the same time the friction disc during operation by means of
• Friction clutch with this clutch design own, functional
• Impeller could be changed.
• Impeller arranged, axially movable valve spool which in the
• the guides in this design are always exposed to the operating medium with the inevitable contamination load of the cooling medium such as molding sand, metal particles, eg, from the manufacturing process or due to wear, so that dirt particles which get into the guide inevitably lead to jamming of the slide.
• the cooling medium such as molding sand, metal particles, eg, from the manufacturing process or due to wear
• the cylinder head should by no means flow through coolant to bring the exhaust gas temperature as fast as possible to the desired level.
• the invention is therefore based on the object to develop a driven, controllable coolant pump for internal combustion engines, which avoids the aforementioned disadvantages of the prior art, in case of failure of the regulation further functioning of the coolant pump (fail-safe) ensures, by a high efficiency, a characterized by a very compact, simple, robust design and which ensures high reliability and reliability even in loaded with contaminated medium operating fluid, an active control of the coolant flow rate on the one hand by "zero leakage" to ensure optimum heating of the engine and on the other hand after heating of the engine to influence the engine temperature in continuous operation so accurately that throughout Work area of the engine both the pollutant emission as well as the friction losses and fuel consumption can be significantly reduced.
• a controllable coolant pump with the features of the main claim of the invention.
• the controllable coolant pump according to the invention with a pump housing (1), a pump housing (1) mounted, driven shaft (2), on a free, flow-side ends of this shaft (2) rotatably mounted impeller (3) and a pressure-actuated valve spool (4) with an outflow region of the impeller (3) variable overlapping outer cylinder (5), characterized in that the valve slide (4) is annular, wherein the valve spool (4) a plurality of piston rods (6) are arranged in the pump housing (1) are distributed parallel to the shaft (2) evenly over the circumference of the valve slide (4) associated with the valve spool (4) piston rods (6), a plurality of bores (7) introduced at the valve slide side end in the pump housing (1) seal receivers (8 In which rod seals (9) are arranged, wherein at the opposite end of the bores (7) in the pump housing (1) has an annular groove (10) a is arranged which connects the holes (7)
• the piston rod (6) opposite end face of the annular piston (12) is inventively provided with a ring land (15) on which a Rollfaltbelag (16) is arranged, which by means of clamping elements (17) against the pump housing (1) clamped clamping cover ( 18) is attached.
• This Rollfaltbelag (16) ensures a simple and reliable sealing of the annular piston (12) relative to the annular groove (10).
• one or more pressure connection bores (20) for the pressure actuation of the valve slide (4) is / are arranged in the pump housing (1), which opens into a pressure connection piece (19) arranged on the pump housing (1).
• valve spool side of the annular piston (12) in the region of the annular groove (10) in the pump housing (1) with the outside area in communication pressure equalization holes (21) are arranged.
• pressure compensation bores (21) pressure compensation in the annular chamber (32) between the annular groove (10) and the annular piston (12) is ensured when the annular piston (12) is displaced.
• an elastomeric bypass seal (23) is arranged, which can not contribute to the jamming of the valve spool during the spool stroke and in the closed position of the valve spool (4) the annular gap (25 ) between the pump housing (1) and the valve spool (4)
• the engine temperature in continuous operation can be influenced so accurately that throughout the entire operating range of the engine both the pollutant emission, the friction losses as well as the fuel consumption is significantly reduced.
• Figure 1 an inventive, controllable coolant pump for vacuum control in the side view in section with the position of the valve spool in its rear end position ("OPEN");
• Figure 2 the inventive, controllable coolant pump for vacuum control according to Figure 1, in the side view in a further section with the position of the valve spool in its rear end position ("OPEN");
• FIG 3 the inventive, controllable coolant pump for vacuum control in the side view, in section analog Figure 1, but with the position of the valve spool in its front end position ("CLOSED");
• Figure 4 an inventive, controllable coolant pump now for pressure control in the side view in section with the position of the valve spool in its rear end position (“OPEN").
• FIG. 1 shows one of the possible designs of the controllable coolant pump according to the invention in section, in side view, with the position of the valve slide in its rear end position (“OPEN")
• OPEN rear end position
• a driven shaft 2 is mounted in a pump bearing 27.
• an impeller 3 is arranged on the free, flow-side ends of the shaft 2 rotatably an impeller 3 is arranged.
• Adjacent to this impeller 3, a pressure-actuated annular valve spool 4 is displaceably arranged in the pump housing 1 with an outer cylinder 5 which covers the outflow region of the impeller 3 in variable manner.
• a plurality of piston rods 6 are arranged at the valve spool 4 a plurality of piston rods 6 are arranged.
• piston rods 6 In the pump housing 1 are distributed in parallel to the shaft 2 uniformly over the circumference of the valve slide 4, assigned to the valve slide 4 arranged piston rods 6, a plurality of holes 7 introduced at the valve slide end are located in the pump housing 1 seal receivers 8 in which rod seals 9 are arranged at the opposite end of the holes 7 in the pump housing 1, an annular groove 10 is arranged which connects the holes 7 with each other.
• piston guides 11 In the holes 7 piston guides 11 are arranged in which the arranged on the valve spool 4 piston rods 6 are mounted axially displaceable. These arranged in the piston guides 11 piston rods 6 are connected to each other with their ringnut remedy ends by means of an annular piston 12.
• This annular piston 12 is slidably mounted in the annular groove 10. Between the holes 7 are distributed ringnut matter in the pump housing 1 evenly over the circumference of the annular piston 12, spring chambers 13 are introduced in which against the annular piston 12 braced compression springs 14 are arranged.
• the piston rod 6 opposite end face of the annular piston 12 is provided according to the invention with a ring land 15 on which a Rollfaltbelag 16 is arranged, which is fastened by means of a clamped with clamping elements 17 against the pump housing 1 clamp cover 18.
• This Rollfaltbelag 16 ensures a simple and reliable sealing of the annular piston 12 relative to the annular groove 10th
• an elastomeric bypass seal 23 is arranged which can not contribute to the jamming of the valve slide during the slide stroke.
• FIG. 2 shows now the controllable coolant pump according to the invention from FIG. 1 for vacuum regulation in the side view, in another sectional view with the position of the valve spool in turn in its rear end position (“OPEN").
• a pressure connection piece 19 is arranged according to the invention on the pump housing 1 with a pressure connection bore 20 for the pressure actuation of the valve slide 4.
• the Pressure port 20 opens pressure spring side of the annular piston 12 in the annular groove 10.
• pressure compensating bores 21 which are in communication with the outside area are arranged.
• Pressure equalizing holes 21 12 of the pressure compensation in the sealing chamber 26 between the clamping cover 18 and the roll fold 16 is ensured upon displacement of the annular piston.
• a leakage bore 31 is arranged on the impeller side of the bearing seat, which connects a leakage access 30, which is arranged in the pump housing 1 at the front side of the pump bearing 27, to the outside area.
• FIG. 3 now shows the controllable coolant pump according to the invention for vacuum regulation in the side view, in section analogous to FIG. 1, but with the position of the valve slide in its front end position ("CLOSED").
• valve slide 4 In this closed position of the valve slide 4, the valve slide 4 is located on a sealing surface 24 of the pump housing 1 and closes simultaneously with the arranged on the piston rod side outer edge 22 of the valve spool 4 elastomer bypass seal 23, the annular gap 25 between the pump housing 1 and the valve spool 4, so that itself smallest leaks in the position of the valve slide "CLOSED" can be prevented.
• a "zero leakage" and thus optimum heating of the engine are ensured with high pump efficiency, whereby the motor temperature in continuous operation can be influenced so accurately by means of the arrangement according to the invention after the heating of the engine that both in the entire working range of the engine the pollutant emission as well as the friction losses and fuel consumption are significantly reduced.
• a vent hole 28 is arranged which connects a pump housing 1 in the front end of the pump bearing 27 arranged vent inlet 29 to the outside.
• FIG. 4 Another design of the controllable coolant pump according to the invention is shown in Figure 4 in the side view, in section, with the position of the valve spool in its rear end position "OPEN”.
• This design can be used in conjunction with a hydraulic or pneumatic overpressure control.
• a pressure connection piece 19 is arranged according to the invention on the pump housing 1.
• the pressure connection bore 20 now opens the clamping lid side of the arranged on the annular piston 12 Rollfaltbelages 16 in the sealing cover 26 formed by the clamping cover 18 and arranged on the annular piston 12 Roll fold 16.
• pressure equalization holes 21 arranged.
• the pressure equalization in the annular chamber 32 between the annular groove 10 and the annular piston 12 is ensured upon displacement of the annular piston 1.

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)
• Control Of Non-Positive-Displacement Pumps (AREA)
• Sorption Type Refrigeration Machines (AREA)
• Reciprocating Pumps (AREA)
• Magnetic Resonance Imaging Apparatus (AREA)
• Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
• Particle Accelerators (AREA)
• Details Of Reciprocating Pumps (AREA)
• Details And Applications Of Rotary Liquid Pumps (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=37508280

Family Applications (1)

Country Status (10)

Cited By (1)

Families Citing this family (55)

Family Cites Families (15)

• 2005
  • 2005-12-23 DE DE102005062200A patent/DE102005062200B3/de not_active Expired - Fee Related
• 2006
  • 2006-08-11 AT AT06761838T patent/ATE433046T1/de active
  • 2006-08-11 CN CN200680048870XA patent/CN101351631B/zh not_active Expired - Fee Related
  • 2006-08-11 US US11/885,010 patent/US8038419B2/en not_active Expired - Fee Related
  • 2006-08-11 ES ES06761838T patent/ES2327780T3/es active Active
  • 2006-08-11 KR KR1020077022880A patent/KR101281679B1/ko not_active Expired - Fee Related
  • 2006-08-11 JP JP2008546084A patent/JP5044569B2/ja not_active Expired - Fee Related
  • 2006-08-11 EP EP06761838A patent/EP1963637B1/fr not_active Not-in-force
  • 2006-08-11 BR BRPI0612567-0A patent/BRPI0612567B1/pt not_active IP Right Cessation
  • 2006-08-11 DE DE502006003911T patent/DE502006003911D1/de active Active
  • 2006-08-11 DE DE112006003760T patent/DE112006003760A5/de not_active Withdrawn
  • 2006-08-11 WO PCT/DE2006/001405 patent/WO2007071217A1/fr not_active Ceased

Non-Patent Citations (1)

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