HUE025332T2

HUE025332T2 - High pressure fuel pump assembly

Info

Publication number: HUE025332T2
Application number: HUE12165506A
Authority: HU
Inventors: Mikko Jay; Leon Whitehead
Original assignee: Delphi Int Operations Luxembourg Sarl
Priority date: 2012-04-25
Filing date: 2012-04-25
Publication date: 2016-02-29
Also published as: CN103423045A; JP2013231430A; EP2657505A1; KR20130120401A; EP2657505B1; KR101568140B1; ES2545122T3

Description

Description TECHNICAL FIELD

[0001] The present invention relates to a high pressure fuel pump for pumping a liquid fuel, such as diesel fuel. The invention also relates to a shoe; and a shoe guide for a high pressure fuel pump (DE-A-102007 003 125).

BACKGROUND OF THE INVENTION

[0002] It has been found that a shoe for engaging a follower roller in a high pressure fuel pump can be subject to fatigue wear. It is desirable to reduce the fatigue wear to extend the service life of the fuel pump.

[0003] It is known from US 7,568,461 to modify the end shapes of a follower roller to define two contact areas. This arrangement is intended to permit lubricant to reach the end face surfaces of the follower roller between the contact areas. This arrangement does not address the problem of fatigue wear on the shoe.

[0004] By way of background, a lubricating system for bearing shoes is known from US 4,209,079. However, this arrangement is intended for bearing surfaces having a large diameter to support a heavy element such as a drum of a crusher. The arrangement described therein cannot readily be applied to a high pressure fuel pump system [0005] The present invention sets out to help ameliorate or overcome at least some of the problems associated with prior art systems.

SUMMARY OF THE INVENTION

[0006] Aspects of the present invention relate to a high pressure fuel pump; a shoe; and a shoe guide for a high pressure fuel pump.

[0007] In a further aspect, the present invention relates to a high pressure fuel pump assembly for an internal combustion engine, the pump assembly comprising: a pump housing, a follower roller engageable with a cam provided on a rotatable driveshaft; a shoe for reciprocating a fuel pump plunger; and a shoe guide formed by an insert provided in the pump housing and having a guide face for guiding the shoe; the shoe having an upper side and a lower side, a part cylindrical recess being formed on the lower side of the shoe for cooperating with the follower roller; wherein at least one aperture is provided in the shoe guide and/or the shoe to form at least one fluid pathway for maintaining fluid communication between the upper and lower sides of the shoe, and wherein the at least one aperture comprises a concave section in formed in a sidewall of the shoe and/or an inner wall of the shoe guide. This arrangement can promote the flow of lubricant within the pump assembly. In particular, said at least one aperture can im prove hydrodynamic lubrication at the interface between the shoe and the follower roller. The lubrication between the follower roller and the cam can also be improved. Moreover, sliding friction can be reduced to increase the fatigue life of the shoe.

[0008] The shoe is typically provided between an upper cambox and a lower cambox. The at least one fluid pathway can be suitable for maintaining fluid communication between an upper cambox and a main cambox of the pump assembly. The circulation of lubricant between the upper cambox and the main cambox can be improved. The at least one aperture can improve pressure stability between the upper cambox and the main cambox.

[0009] The high pressure fuel pump can further comprising a bypass channel arranged to bypass the shoe assembly. The bypass channel can provide an alternate fluid pathway between the upper cambox and the main cambox. The provision of the bypass channel and said at least one fluid pathway can promote the circulation of lubricant within the pump.

[0010] The at least one aperture can extend substantially parallel to a longitudinal axis of the shoe (along which the shoe travels). Alternatively, said at least one aperture could be inclined relative to said longitudinal axis.

[0011] The at least one aperture can comprise a first channel formed in a sidewall of the shoe. The first channel can provide a fluid pathway past the shoe in the pump assembly. The at least one aperture can comprise a concave section formed in a sidewall of the shoe. The concave section can form a fluid pathway between the shoe and the shoe guide. In certain embodiments, the shoe can be elongated in a transverse direction, thereby defining long and short sidewalls. An aperture could be formed in one of the short sidewalls of the shoe. Alternatively, with a view to reducing loading on the shoe, an aperture could be formed in one of the long sidewalls of the shoe.

[0012] The at least one aperture could comprise a second channel formed in the shoe guide. The second channel can provide a fluid pathway past the shoe in the pump assembly. The second channel could be a cut-outformed in the guide face of the shoe guide.

[0013] The pump assembly could comprise either said first channel in the shoe or said second channel in the shoe guide. Alternatively, both said first and second channels could be provided. The first and second channels could be aligned with each other to form the fluid pathway. The fluid pathway could, for example, have an elliptical or circular profile.

[0014] The at least one aperture could further comprise a bore formed in the shoe and/or the shoe guide. The bore can be coincident with or offset from the part cylindrical recess formed on the lower side of the shoe.

[0015] In a further aspect, the present invention relates to a shoe for cooperating with a follower roller in a high pressure fuel pump, the shoe having an upper side, a lower side and a sidewall; a part cylindrical recess being formed on the lower side of the shoe for receiving a follower roller; wherein at least one aperture is provided in said shoe for forming at least one fluid pathway to maintain fluid communication between the upper and lower sides of the shoe, wherein the at leastone aperture comprises a concave section formed in a sidewall of the shoe.

[0016] The at least one aperture can comprise a first channel formed in the sidewall of the shoe. In certain embodiments, the shoe can be elongated in a transverse direction, thereby defining two long sidewalls and two short sidewalls. An aperture could be formed in one or both of the short sidewalls of the shoe. Alternatively, with a view to reducing loading on the shoe, an aperture could be formed in one or both of the long sidewalls of the shoe.

[0017] Alternatively, or in addition, the at leastone aperture can comprise a bore formed in the shoe. The bore can extend substantially parallel to a longitudinal axis of the shoe. The bore can be coincident with, or offset from the part cylindrical recess formed on the lower side of the shoe.

[0018] In a still further aspect, the present invention relates to a shoe guide insert for guiding a shoe in a high pressure fuel pump, the shoe guide having an inner wall defining at least one guide face for engaging a sidewall of the shoe; wherein at least one aperture is provided in said inner wall for form ing at least one fluid pathway past the shoe, wherein the at least one aperture comprises a concave section formed in the inner wall of the shoe guide. The at least one aperture can comprise a channel or recess formed in the inner wall of the shoe guide.

[0019] The present invention also relates to an assembly comprising a shoe and a shoe guide as described herein.

[0020] The pump assembly and shoe have been described herein using relative positional terms, such as upper and lower. These terms are used with reference to the illustrated pump assembly to assist with the explanation of the present invention and are not intended to be limiting on the scope of protection conferred.

BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying figures, in which:

Figure 1 shows a cross sectional view of a high pressure fuel pump incorporating a shoe and a shoe guide according to the present invention;

Figure 2 shows a plan view of a shoe and a shoe guide according to a first embodiment of the present invention;

Figure 3 shows a perspective view of the shoe shown in Figure 2;

Figure 4 shows a plan view of a shoe and a shoe guide according to a second embodiment of the present invention;

Figure 5 shows a perspective view of the shoe shown in Figure 4;

Figure 6 shows a plan view of a shoe and a shoe guide according to a third embodiment of the present invention; and

Figure 7 shows a perspective view of a modified shoe not according to claim 1.

DETAILED DESCRIPTION OF AN EMBODIMENT

[0022] A high pressure fuel pump 1 in accordance with the present invention is shown in Figure 1. The fuel pump 1 is intended for pumping diesel fuel to a common rail of an internal combustion engine. It will be appreciated, however, that the techniques described herein could be used in other applications.

[0023] The fuel pump 1 comprises a plunger 3 for supplying high pressure fuel to a fuel injection system. The plunger 3 is located in a housing 5 comprising a hydraulic head 7 having a fuel inlet port 9 and a fuel outlet port 11. An inlet valve 13 is provided in the fuel inlet port 9 and an outlet valve 15 is provided in the fuel outlet port 11. The plunger 3 is movable along a longitudinal axis X in a reciprocating action within a pumping chamber 17.

[0024] A lower end of the plunger 3 is coupled to a shoe 19 movable along the longitudinal axisX. The shoe 19 is supported in a shoe guide 21 formed by a cylindrical insert 23 provided in the housing 5. As shown in Figures 1 and 2, the shoe 19 is elongated along a transverse axis Y and comprises an upper side 25, a lower side 27, a first sidewall 29, a second sidewall 31, a third sidewall 33 and a fourth sidewall 35. The shoe 19 has a generally rectangular plan form and the first and second sidewalls 29, 31 are longer than the third and fourth sidewalls 33, 35. A part cylindrical recess 37 is formed in the lower side 27 of the shoe 19 to receive a follower roller 39.

[0025] The follower roller 39 is movably mounted in the shoe guide 21. Specifically, the follower roller 39 can rotate about the transverse axis Y and translate along the longitudinal axis X. The follower roller 39 is arranged to follow a cam 41 provided on a rotatable driveshaft 43. The rotation of the driveshaft 43 causes the cam 41 to displace the follower roller 39 and the shoe 19 upwardly, thereby advancing the plunger 3 into the pumping chamber 17. A spring 45 is provided to bias the plunger 3 downwardly, thereby retracting the plunger 3 and maintaining the follower roller 39 in contact with a surface of the cam 41. The rotation of the driveshaft 43 causes the plunger 3 to reciprocate within the pumping chamber 17.

[0026] The spring 45 and the lower end of the plunger 3 are provided in an upper cam box 47 within the housing 5. The driveshaft 43 is provided in a main cambox 49 positioned beneath the upper cambox 47. The upper side 25 of the shoe 19 is in fluid communication with the upper cambox 47; and the lower side 27 of the shoe 19 (and the follower roller 39) is in fluid communication with the main cambox 49. A bypass conduit 51 is formed in the housing 5 to define a fluid channel between the upper cambox 47 and the main cambox 49.

[0027] As shown in Figure 2, an inner wall 53 of the shoe guide 21 is profiled to define a plurality of discrete shoe guide faces 55a-f extending parallel to the longitudinal axis X to contact the sidewalls 29, 31,33, 35 of the shoe guide 21. The guide faces 55a-f maintain the alignment of the shoe 19 as it travels within the shoe guide 21. In the present embodiment, the lateral guide faces 55a-d engage the first and second sidewalls 29, 31 ; and the end guide face 55e, f engage the third and fourth sidewalls 33, 35.

[0028] The shoe 19 and the shoe guide 21 are also profiled to define two side channels 57 and four corner channels 59 for maintaining the upper cambox 47 in fluid communication with the main cambox 49. The side channels 57 are defined by concave sections formed in the first and second sidewalls 29, 31 of the shoe 19 and also in the inner wall 53 of the shoe guide 21. Accordingly, the side channels 57 have a generally elliptical cross section. The corner channels 59 are defined by concave cutouts formed in the inner wall 53 of the shoe guide 21 and by forming each corner of the shoe 19 in a radius. A perspective view of the shoe 19 is shown in Figure 3.

[0029] In use, the driveshaft 43 rotates about an axis parallel to the transverse axis Y. The rotation of the cam 41 displaces the follower roller 39 and the shoe 19 upwardly within the shoe guide 21. The spring 45 biases the shoe 19 and the follower roller 39 downwardly. Since the plunger 3 is coupled to the shoe 19, the plunger 3 advances and retracts in a reciprocating motion within the pumping chamber 17. As the plunger 3 retracts, the outlet valve 15 is closed and fuel is drawn into the pumping chamber 17 through the fuel inlet port 9. When the plunger 3 advances, the inlet valve 13 is closed and the fuel is pressurised in the pumping chamber 17 before exiting through the fuel outlet port 11.

[0030] The bypass channel 51 provides fluid communication between the upper cambox 47 and the main cambox 49. Thus, lubricant can travel from the main cam-box 49 to the upper cambox 47 via the bypass conduit 51. The channels 57, 59 formed in the shoe 19 provide additional fluid pathways between the upper cambox 47 and the main cambox 49. The channels 57,59 can thereby promote the circulation of lubricant within the pump 1. In particular, the channels 57, 59 can improve hydro-dynamic lubrication at the interface between the shoe 19 and the follower roller 39; and at the interface between the follower roller 39 and the cam 41. The sliding friction can be reduced, thereby increasing fatigue life and improving overall robustness of the pump 1. The channels 57, 59 may also improve damping, thereby improving pressure stability between the upper cambox 49 and the main cambox 47. There is potentially also a reduction in the turbulence created within the upper cambox 49 and the main cambox 47.

[0031] A shoe and shoe guide according to a second embodiment of the present invention are illustrated in Figures 4 and 5. The second embodiment is similar to the first embodiment described herein and like reference numerals will be used for like components, albeit suffixed with a prime modifier for clarity.

[0032] The shoe 19’ and the shoe guide 21’ in the second embodiment have been modified. Specifically, the opposing first and second sidewalls 29’, 31’ of the shoe 19’ each have a convex profile; and the opposing third and fourth sidewalls 33’, 35’ are substantially planar. The inner wall 53’ of the shoe guide 21’ is profiled to define four shoe guide faces 55’a-d for engaging a central section of the corresponding sidewalls 29’, 31’, 33’, 35’ of the shoe 19’. First and second lateral guide faces 55’a, b engage the respective first and second sidewalls 29’, 3T; and third and fourth end guide faces 55’c, d engage the respective third and fourth sidewalls 33’, 35’.

[0033] The shoe 19’ and the shoe guide 21’ are profiled to define four corner channels 59’. The corner channels 59’ are defined by concave cut-outs formed in the inner wall 53’ of the shoe guide 21’. As in the first embodiment, the corner channels 59’ maintain the upper cambox 47’ in fluid communication with the main cambox 49’. A perspective view of the shoe 19’ is shown in Figure 5.

[0034] The operation of the pump T incorporating the shoe 19’ and the shoe guide 21 ’ according to the second embodiment is unchanged from that of the first embodiment. In particular, the corner channels 59’ allow lubricant to travel between the upper cambox 47’ and the main cambox 49’.

[0035] A shoe and shoe guide according to a third embodiment of the present invention is illustrated in Figure 6. The third embodiment is similar to the first embodiment described herein and like reference numerals will again be used for like components, albeit suffixed with two prime modifiers for clarity.

[0036] The sidewalls 29", 31 ", 33", 35" of the shoe 19” are substantially planar and a radius is formed at each corner. Four corner channels 59" are defined by concave cut-outs formed in the inner wall 53" of the shoe guide 21 ". As before, the corner channels 59" maintain the upper cambox in fluid communication with the main cambox. In addition, fourshoe guide bores 61 are formed in the shoe guide 21". The shoe guide bores 61 are arranged substantially parallel with the longitudinal axis X and extend through the shoe guide 21 ". The shoe guide bores 61 thereby provide additional fluid pathways between the upper cambox and the main cambox.

[0037] The first, second and third embodiments described herein provide fluid pathways at the interface between the shoe 19 and the shoe guide 21 to enable lubricant to flow past the shoe 19. An alternate approach is to form one or more bores in the shoe 19. The shoe bores can extend through the shoe 19 thereby providing one or more fluid pathways between the upper and lower sides 25,27 of the shoe 19. The shoe bores can facilitate the introduction of lubricant directly at the interface between the shoe 19 and the follower roller 39. By way of example, a modified shoe 19 having first and second shoe bores 63 is illustrated in Figure 7. The upper and/or lower edges of the shoe bores 63 can be chamfered.

[0038] The embodiments described herein can utilise the liquid fuel being pumped by the high pressure fuel pump 1 to provide lubrication. Alternate arrangements may require a separate lubricant which is different from the liquid fuel. For example, the liquid fuel could be contained within the hydraulic head 7 and a separate lubricant provided for lubricating the pump 1. A modified embodiment of the high pressure fuel pump 1 described herein could provide a lubricant, such as oil, in the upper cambox 47 and the main cambox 49 for lubricating the pump 1. The liquid fuel to be pumped would be prevented from entering the upper cambox47 and the main cambox 49 from the pumping chamber 17.

[0039] It will be appreciated that various changes and modifications can be made to the embodiment described herein without departing from the scope of the present invention, as defined by the claims.

Claims 1. A high pressure fuel pump (1 ) assembly for an internal combustion engine, the pump (1 ) assembly comprising: a pump housing (5), a follower roller (39) engageable with a cam (41 ) provided on a rotatable driveshaft (43); a shoe (19, 19’, 19") for reciprocating a fuel pump plunger (3); and a shoe guide (21,2T, 21 ") formed by a cylindrical insert (23) provided in the pump housing (5) and having a guide face (55a-f, 55’a-d) for guiding the shoe (19, 19’, 19"); the shoe (19,19’, 19") having an upper side (25) and a lower side (27), a part cylindrical recess (37) being formed on the lower side (27) of the shoe (19, 19’, 19") for cooperating with the follower roller (39); wherein at least one aperture (57, 59, 59’, 59", 61, 63) is provided in the shoe guide (21, 2T, 21 ") and/or the shoe (19, 19’, 19") to form at least one fluid pathway for maintaining fluid communication between the upper (25) and lower (27) sides of the shoe (19,19’, 19"), and wherein the at least one aperture (57, 59, 59’, 59’, 61, 63’) comprises a concave section formed in a sidewall (29, 31, 33, 35, 29’, 31’, 33’, 35’, 29", 31 ", 33", 35") of the shoe (19, 19’, 19") and/or an inner wall (53, 53’, 53") of the shoe guide (21, 21’, 21 "). 2. A high pressure fuel pump (1) assembly as claimed in claim 1, wherein said at least one fluid pathway is suitable for maintaining fluid communication between an upper cambox (47) and a main cambox (49) of the pump (1) assembly. 3. A high pressure fuel pump (1) assembly as claimed in claim 2 further comprising a bypass channel (51) for providing fluid communication between the upper cambox (47) and the main cambox (49). 4. A high pressure fuel pump (1) assembly as claimed in any one of claims 1,2 or 3, wherein said at least one aperture (57, 59, 59’, 59", 61, 63) comprises a first channel formed in a sidewall (29, 31,33,35,29’, 31’, 33’, 35’, 29", 31 ", 33", 35") of the shoe (19, 19’, 19"). 5. A high pressure fuel pump (1) assembly as claimed in any one of the preceding claims, wherein the shoe (19, 19’, 19") is elongated in a transverse direction (Y) and comprises two long sidewalls (29, 31, 29’, 31’, 29", 31") and two short sidewalls (33, 35, 33’, 35’, 33", 35"); said at least one aperture (57, 59, 59’, 59") being formed in one or both of said long side-walls (29, 31,29’, 31’, 29", 31"). 6. A high pressure fuel pump (1) assembly as claimed in any one of the preceding claims, wherein said at least one aperture (57, 59, 59’, 59”, 61,63) comprises a second channel formed in the shoe guide (21, 21’ 21"). 7. A high pressure fuel pump (1) assembly as claimed in claim 6, wherein said second channel is formed by a cut-out in an inner surface (53, 53’, 53") of the shoe guide (21 21’ 21"). 8. A high pressure fuel pump (1) assembly as claimed in any one of the preceding claims, wherein said at least one aperture (57, 59, 59’, 59", 61, 63) further comprises a bore (61, 63) formed in the shoe (19, 19’, 19") and/or the shoe guide (21,2T, 21"). 9. A shoe (19, 19’, 19") for cooperating with a follower roller (39) in a high pressure fuel pump (1 ), the shoe (19,19’, 19") having an upper side (25), a lower side (27) and a sidewall (29, 31,33, 35, 29’, 31’, 33’, 35’, 29", 31 ", 33", 35"); a part cylindrical recess (37) being formed on the lower side (27) of the shoe (19 ,19’, 19") for receiving the follower roller (39); wherein at least one aperture (57, 59, 59’, 59", 61, 63) is provided in said shoe (19, 19’, 19") for forming at least one fluid pathway to maintain fluid communication between the upper (25) and lower (27) sides of the shoe (19,19’, 19"), wherein the at least one aperture (57, 59, 59’, 59", 61,63) comprises a concave section formed in a sidewall (29, 31,33, 35,29’, 3T, 33’, 35’, 29", 31", 33", 35") of the shoe (19, 19’, 19"). 10. A shoe (19, 19’, 19") as claimed in claim 9, wherein said at least one aperture (57, 59, 59’, 59", 61, 63) comprises a first channel formed in the sidewall (29, 31, 33, 35, 29’, 31’, 33’, 35’, 29", 31 ", 33", 35") of the shoe (19, 19’, 19"). 11. A shoe (19,19’, 19") as claimed in any one of claims 9 or 10 .wherein the shoe (19,19’, 19") is elongated in a transverse direction (Y) and comprises two long sidewalls (29, 31,29’, 31’, 29", 31 "), and two short sidewalls (33,35,33’, 35’, 33", 35"); said at least one aperture (57, 59, 59’, 59", 61, 63) being formed in one or both of said long sidewalls (33, 35, 33’, 35’, 33", 35"). 12. A shoe as claimed in any one of claims 9 to 11, wherein said at least one aperture (57, 59, 59’, 59", 61,63) further comprises a bore (63) formed in the shoe (19, 19’, 19"); the bore (63) optionally being coincident with the part cylindrical recess (37) formed on the lower side (27) of the shoe (19, 19’, 19"). 13. A shoe guide (21, 21, 21") for guiding a shoe (19, 19’, 19") in a high pressure fuel pump (1), the shoe guide (21,21 ’, 21 ") being formed as a cylindrical insert (23) and having an inner wall (53, 53’, 53")de-fining at least one guide face (55a-f) for engaging a sidewall (29, 31, 33, 35, 29’, 31’, 33’, 35’, 29", 31", 33", 35") of the shoe (19, 19’, 19"); wherein at least one aperture (57, 59, 59’, 59", 61,63) is provided in the inner wall (53, 53’, 53")of the shoe guide (21,21’, 21") for forming at least one fluid pathway past the shoe (19,19’, 19"); wherein the at least one aperture (57, 59, 59’, 59", 61,63) comprises a concave section formed in the inner wall (53,53’, 53") of the shoe guide (21,21’, 21 "). 14. An assembly comprising a shoe (19, 19’, 19") as claimed in any one of claims 9 to 11 and a shoe guide (21,21’, 21") as claimed in claim 13. 15. A high pressure fuel pump (1) assembly as claimed in claims 1,4 and 6, wherein the first channel formed in the sidewall (29, 31,33, 35, 29’, 31’, 33’, 35’, 29", 31 ", 33", 35") of the shoe (19, 19; 19") and second channel formed in the shoe guide (21,21’, 21") are aligned with one another, and wherein the fluid pathway has an elliptical or circular cross-sectional profile.

Patentansprüche 1. HochdruckkraftstofFpumpen-(1)-Anordnung für eine Verbrennungskraftmaschine, wobei die Pum-pen-(1)-Anordnung Folgendes aufweist: ein Pumpengehäuse (5), einen Rollenstößel (39), der mit einem Nocken (41) in Eingriff kommen kann, der an einerdrehbaren Antriebswelle (43) bereitgestellt ist, ein Gleitstück (19, 19’, 19") zum Hin- und Herbewegen eines Kraftstoffpumpenkolbens (3) und eine Gleitstückführung (21,21 ’, 21 "), die von einem zylindrischen Einsatz (23) gebildet wird, der in dem Pumpengehäuse (5) bereitgestellt ist, und eine Führungsfläche (55a-f, 55’a-d) zum Führen des Gleitstücks (19, 19’, 19") hat, wobei das Gleitstück (19, 19’, 19") eine Oberseite (25) und eine Unterseite (27) hat, wobei an der Unterseite (27) des Gleitstücks (19, 19’, 19") eine teilweise zylindrische Aussparung (37) zum Zusammenwirken mit dem Rollenstößel (39) ausgebildet ist, wobei wenigstens eine Öffnung (57,59,59’, 59", 61, 63) in der Gleitstückführung (21, 21’, 21") und/oderdem Gleitstück (19,19’, 19") bereitgestellt ist, um wenigstens einen Fluidweg zur Erhaltung der Strömungsverbindung zwischen der Ober- (25) und der Unterseite (27) des Gleitstücks (19, 19’, 19") zu bilden, und wobei die wenigstens eine Öffnung (57, 59, 59’, 59", 61, 63) einen konkaven Abschnitt aufweist, der in einer Seitenwand (29, 31, 33, 35, 29’, 31’, 33’, 35’, 29", 31", 33", 35") des Gleitstücks (19, 19’, 19") und/oder einer Innenwand (53,53’, 53") der Gleitstückführung (21,21’, 21") ausgebildet ist. 2. Hochdruckkraftstoffpumpen-(1)-Anordnung nach Anspruch 1, wobei der genannte wenigstens eine Fluidweg zur Erhaltung der Strömungsverbindung zwischen einem oberen Nockengehäuse (47) und einem Hauptnockengehäuse (49) der Pum-pen-(1)-Anordnung geeignet ist. 3. Hochdruckkraftstoffpumpen-(1)-Anordnung nach

Anspruch 2, die ferner einen Umgehungskanal (51) zum Bereitstellen der Strömungsverbindung zwischen dem oberen Nockengehäuse (47) und dem Hauptnockengehäuse (49) aufweist. 4. Hochdruckkraftstoffpumpen-(1)-Anordnung nach einem der Ansprüche 1,2 oder 3, wobei die genannte wenigstens eine Öffnung (57, 59, 59’, 59", 61, 63) einen ersten Kanal aufweist, der in einer Seitenwand (29, 31, 33, 35, 29’, 31’, 33’, 35’, 29", 31", 33", 35") des Gleitstücks (19, 19’, 19") ausgebildet ist. 5. Hochdruckkraftstoffpumpen-(1)-Anordnung nach einem der vorhergehenden Ansprüche, wobei das Gleitstück (19, 19’, 19") in einer Querrichtung (Y) länglich ist und zwei lange Seitenwände (29,31,29’, 31’, 29", 31") und zwei kurze Seitenwände (33, 35, 33’, 35’, 33", 35") aufweist, wobei die genannte wenigstens eine Öffnung (57,59, 59’, 59") in einer oder beiden der genannten langen Seitenwände (29, 31, 29’, 31’, 29", 31") ausgebildet ist. 6. Hochdruckkraftstoffpumpen-(1)-Anordnung nach einem der vorhergehenden Ansprüche, wobei die genannte wenigstens eine Öffnung (57, 59, 59’, 59", 61.63) einen zweiten Kanal aufweist, der in der Gleitstückführung (21,21’, 21") ausgebildet ist. 7. Hochdruckkraftstoffpumpen-(1)-Anordnung nach Anspruch 6, wobei der genannte zweite Kanal von einer Ausnehmung in einer Innenfläche (53, 53’, 53") der Gleitstückführung (21,21’, 21") gebildet wird. 8. Hochdruckkraftstoffpumpen-(1)-Anordnung nach einem der vorhergehenden Ansprüche, wobei die genannte wenigstens eine Öffnung (57, 59, 59’, 59", 61.63) ferner eine Bohrung (61,63) aufweist, die in dem Gleitstück (19, 19’, 19") und/oder der Gleitstückführung (21,21’, 21") ausgebildet ist. 9. Gleitstück (19, 19’, 19") zum Zusammenwirken mit einem Rollenstößel (39) in einer Hochdruckkraftstoffpumpe (1), wobei das Gleitstück (19, 19’, 19") eine Oberseite (25), eine Unterseite (27) und eine Seitenwand (29, 31, 33, 35, 29’, 31’, 33’, 35’, 29", 31", 33", 35") hat, wobei an der Unterseite (27) des Gleitstücks (19, 19’, 19") eine teilweise zylindrische Aussparung (37) zur Aufnahme des Rollenstößels (39) ausgebildet ist, wobei wenigstens eine Öffnung (57,59,59’, 59", 61,63) in dem genannten Gleitstück (19, 19’, 19") bereitgestellt ist, um wenigstens einen Fluidweg zur Erhaltung der Strömungsverbindung zwischen der Ober- (25) und der Unterseite (27) des Gleitstücks (19, 19’, 19") zu bilden, wobei die wenigstens eine Öffnung (57,59,59’, 59", 61,63) einen konkaven Abschnitt aufweist, der in einer Seitenwand (29, 31,33, 35, 29’, 31’, 33’, 35’, 29", 31", 33", 35") des Gleitstücks (19, 19’, 19") ausgebildet ist. 10. Gleitstück (19,19’, 19") nach Anspruch 9, wobei die genannte wenigstens eine Öffnung (57,59,59’, 59", 61.63) einen ersten Kanal aufweist, der in der Seitenwand (29, 31,33, 35, 29’, 31’, 33’, 35’, 29", 31", 33", 35") des Gleitstücks (19, 19’, 19") ausgebildet ist. 11. Gleitstück (19, 19’, 19") nach Anspruch 9 oder 10, wobei das Gleitstück (19,19’, 19") in einer Querrichtung (Y) länglich ist und zwei lange Seitenwände (29, 31,29’, 31’, 29”, 31”) und zwei kurze Seitenwände (33, 35, 33’, 35’, 33", 35") aufweist, wobei die genannte wenigstens eine Öffnung (57, 59, 59’, 59", 61, 63) in einer oder beiden der genannten langen Seitenwände (33, 35, 33’, 35’, 33", 35") ausgebildet ist. 12. Gleitstück nach einem der Ansprüche 9 bis 11, wobei die genannte wenigstens eine Öffnung (57, 59, 59’, 59", 61, 63) ferner eine Bohrung (63) aufweist, die in dem Gleitstück (19,19’, 19") ausgebildet ist, wobei die Bohrung (63) wahlweise mit der teilweise zylindrischen Aussparung (37), die an der Unterseite (27) des Gleitstücks (19,19’, 19") ausgebildet ist, zusammenfällt. 13. Gleitstückführung (21, 21’, 21") zum Führen eines Gleitstücks (19, 19’, 19") in einer Hochdruckkraftstoffpumpe (1), wobei die Gleitstückführung (21,21 ’, 21 ") als zylindrischer Einsatz (23) ausgebildet ist und eine Innenwand (53, 53’, 53") hat, die wenigstens eine Führungsfläche (55a-f) für den Eingriff mit einer Seitenwand (29, 31, 33, 35, 29’, 31’, 33’, 35’, 29", 31", 33", 35") des Gleitstücks (19, 19’, 19") definiert, wobei in der Innenwand (53, 53’, 53") der Gleitstückführung (21,21’, 21") wenigstens eine Öffnung (57, 59, 59’, 59", 61,63) bereitgestellt ist, um wenigstens einen Fluidweg andern Gleitstück(19, 19’, 19")vorbei zu bilden, wobei die wenigstens eine Öffnung (57, 59, 59’, 59", 61, 63) einen konkaven Abschnitt aufweist, der in der Innenwand (53, 53’, 53") der Gleitstückführung (21,21’, 21") ausgebildet ist. 14. Anordnung, umfassend ein Gleitstück (19, 19’, 19") nach einem der Ansprüche 9 bis 11 und eine Gleitstückführung (21,21’, 21") nach Anspruch 13. 15. Hochdruckkraftstoffpumpen-(1)-Anordnung nach Anspruch 1,4 und 6, wobei der erste Kanal, der in der Seitenwand (29,31,33,35,29’, 31 ’, 33’, 35’, 29", 31", 33", 35") des Gleitstücks (19, 19’, 19") ausgebildet ist, und der zweite Kanal, der in der Gleitstückführung (21, 21’, 21") ausgebildet ist, aufeinander ausgerichtet sind, und wobei der Fluidweg ein elliptisches oder kreisförmiges Querschnittsprofil hat.

Revendications 1. Ensemble formant pompe à haute pression (1) pour carburant, pour un moteur à combustion interne, l’ensemble formant pompe (1) comprenant : un boîtier de pompe (5), un galet suiveur (34) capable d’être engagé avec une came (41) prévue sur un arbre d’entraînement rotatif (43) ; un sabot (19, 19’, 19") pour déplacer en va-et-vient un plongeur de pompe à carburant (3) ; et un guide de sabot (21, 21’, 21") formé par un insert cylindrique (23) prévu dans le boîtier de pompe (5) et ayant une face de guidage (55a-f, 55’a-d) pour guider le sabot (19, 19’, 19") ; le sabot (19, 19’, 19") ayant un côté supérieur (25) et un côté inférieur (27), un évidement partiellement cylindrique (37) étantformé sur le côté inférieur (27) du sabot (19, 19’, 19") pour coopérer avec le galet suiveur (39) ; dans lequel au moins une ouverture (57, 59, 59’, 59", 61, 63) est prévue dans le guide de sabot (21,21’, 21") et/ou dans le sabot (19, 19’, 19") pour former au moins un trajet de fluide pour maintenir une communication fluidique entre le côté supérieur (25) et le côté inférieur (27) du sabot (19, 19’, 19"), et dans lequel ladite au moins une ouverture (57, 59, 59’, 59", 61, 63) comprend une section concave formée dans une paroi latérale (29, 31, 33, 35, 29’, 31’, 33’, 35’, 29", 31", 33", 35") du sabot (19, 19’, 19") et/ou une paroi intérieure (53, 53’, 53") du guide de sabot (21,21’, 21"). 2. Ensemble formant pompe à haute pression (1) pour carburant selon la revendication 1, dans lequel ledit au moins un trajet de fluide est approprié pour maintenir une communication fluidique entre une boîte à cames supérieure (47) et une boîte à cames principale (49) de l’ensemble formant pompe (1). 3. Ensemble formant pompe à haute pression (1) pour carburant selon la revendication 2, comprenant en outre un canal de by-pass (51) pour assurer une communication fluidique entre la boîte à cames supérieure (47) et la boîte à cames principale (49). 4. Ensemble formant pompe à haute pression (1) pour carburant selon l’une quelconque des revendications 1,2 ou 3, dans lequel ladite au moins une ouverture (57, 59, 59’, 59", 61,63) comprend un premier canal formé dans une paroi latérale (29, 31,33, 35, 29’, 31’, 33’, 35’, 29", 31", 33", 35") du sabot (19,19’, 19"). 5. Ensemble formant pompe à haute pression (1) pour carburant selon l’une quelconque des revendications précédentes, dans lequel le sabot (19,19’, 19") est allongé dans une direction transversale (Y) et comprend deux parois latérales longues (29,31,29’, 31’, 29", 31") et deux parois latérales courtes (33, 35, 33’, 35’, 33", 35"), ladite au moins une ouverture (57, 59, 59’, 59") étant formée dans une ou dans les deux parois latérales longues (29, 31,29’, 31’, 29", 31"). 6. Ensemble formant pompe à haute pression (1) pour carburant selon l’une quelconque des revendications précédentes, dans lequel ladite au moins une ouverture (57, 59, 59’, 59", 61,63) comprend un second canal formé dans le guide de sabot (21, 21’, 21 "). 7. Ensemble formant pompe à haute pression (1) pour carburant selon la revendication 6, dans lequel ledit second canal est formé par une découpe dans une surface intérieure (53, 53’, 53") du guide de sabot (21,21’, 21"). 8. Ensemble formant pompe à haute pression (1) pour carburant selon l’une quelconque des revendications précédentes, dans lequel ladite au moins une ouverture (57, 59, 59’, 59", 61, 63) comprend en outre un perçage (61,63) formé dans le sabot (19, 19’, 19") et/ou dans le guide de sabot (21,21’, 21"). 9. Sabot (19,19’, 19") pour coopérer avec un galet suiveur (39) dans une pompe à haute pression (1) pour carburant, le sabot (19, 19’, 19") ayant un côté supérieur (25), un côté inférieur (27) et une paroi latérale (29, 31,33, 35, 29’, 31’, 33’, 35’, 29", 31", 33", 35”) ; un évidement partiellement cylindrique (37) étant formé sur le côté inférieur (27) du sabot (19, 19’, 19”) pour recevoir le galet suiveur (39) ; dans lequel au moins une ouverture (57, 59, 59’, 59”, 61, 63) est prévue dans ledit sabot (19, 19’, 19”) pour former au moins un trajet de fluide afin de maintenir une communication fluidique entre le côté supérieur (25) et le côté inférieur (27) du sabot (19, 19’, 19”), dans lequel ladite au moins une ouverture (57, 59, 59’, 59”, 61,63) comprend une section concave formée dans une paroi latérale (29, 31,33, 35,29’, 31’, 33’, 35’, 29", 31", 33", 35") du sabot (19, 19’, 19"). 10. Sabot (19, 19’, 19”) selon la revendication 9, dans lequel ladite au moins une ouverture (57, 59, 59’, 59”, 61, 63) comprend un premier canal formé dans la paroi latérale (29, 31,33, 35,29’, 31’, 33’, 35’, 29”, 31”, 33”, 35”) du sabot (19, 19’, 19”). 11. Sabot (19, 19’, 19”) selon l’une quelconque des revendications 9 ou 10, dans lequel le sabot (19, 19’, 19”) est allongé dans une direction transversale (Y) et comprend deux parois latérales longues (29, 31, 29’, 31’, 29", 31") et deux parois latérales courtes () ; ladite au moins une ouverture (57, 59, 59’, 59”, 61, 63) étantformée dans l’une desdites parois latérales longues (33, 35, 33’, 35’, 33”, 35”) ou dans les deux. 12. Sabot selon l’une quelconque des revendications 9 à 11, dans lequel ladite au moins une ouverture (57, 59, 59’, 59”, 61,63) comprend en outre un perçage (63) formé dans le sabot (19, 19’, 19”) ; le perçage (63) étant en option coïncidant avec l’évidement partiellement cylindrique (37) formé sur le côté inférieur (27) du sabot (19, 19’, 19”). 13. Guide de sabot (21, 21’, 21”) pour guider un sabot (19, 19’, 19”) dans une pompe à haute pression (1) pour carburant, le guide de sabot (21,21 ’, 21 ”) étant formé comme un insert cylindrique (23) et ayant une paroi intérieure (53, 53’, 53”) définissant au moins une face de guidage (55a-f) pour engager une paroi latérale (29, 31, 33, 35, 29’, 31’, 33’, 35’, 29”, 31”, 33”, 35”) du sabot (19,19’, 19”), dans lequel au moins une ouverture (57, 59, 59’, 59”, 61, 63) est prévue dans la paroi intérieure (53, 53’, 53 ”) du guide de sabot (21,21 21 ") pour former au moins un trajet à fluide passant devant le sabot (19, 19’, 19"), dans lequel ladite au moins une ouverture (57, 59, 59’, 69", 61,63) comprend une section concave formée dans la paroi intérieure (53, 53’, 53") du guide de sabot (21,21’, 21 "). 14. Ensemble comprenant un sabot (19, 19’, 19") selon l’une quelconque des revendications 9 à 11, et un guide de sabot (21,21 ’, 21 ") tel que revendiqué dans la revendication 13. 15. Ensemble formant pompe à haute pression (1) pour carburant selon les revendications 1, 4 et 6, dans lequel le premier canal formé dans la paroi latérale (29, 31,33, 35, 29’, 31’, 33’, 35’, 29", 31", 33", 35") du sabot (19, 19’, 19"), et un second canal formé dans le guide de sabot (21, 21’, 21") sont alignés l’un avec l’autre, et dans lequel le trajet de fluide présentant un profil de section transversale elliptique ou circulaire.

Claims

NAGYNYOMÁSÚ ÜZEMANYAG-SZIVATTYÚ EGYSÉG SZABADALMI IGÉNYPONTOKHIGH-SPEED FUEL PUMP UNIT PATTERNS

1. Nagynyomású üzemanyag-szivattyú (1) egység belső égésű motorhoz, amely szivattyú (1 ) egység magában foglal: egy követőgörgőt (38), amely összekapcsolható egy forgó kardántengelyen (43) rendelkezésre álló bütyökkel (41}; egy sarut (18, 19% 19") az üzemanyag-szivattyú dugattyújának (3) lengő mozgatása céljából; és egy saruvezetőt (21, 2i\ 21"), amelyet egy, a szivaftyűházban (6) rendelkezésre álló Hengeres betét (23) képez, és amelynek van egy vezető felülete (55a-f, 55’a-d) a sara (19,19’, 19") vezetése céljából; a sarunak (19, 19', 19") van egy felső oldata (25) és egy alsó oldala (27), egy részhenger alakú mélyedés (37) van kialakítva a saru (19, 19', 19") alsó oldalán (27) a kővetőgörgővel (39) való együttműködés céljából; ahol rendelkezésre áll legalább egy nyílás (57, 59, 59’, 59", 81, 63) a saruvezetőben (21, 2T, 21”) és/vagy a saruban (19, 19', 18“), hogy a saru (19, 19’, 19") felső (25) és alsó (27) oldala között? folyadékkapcsolat fenntartása érdekében legalább egy folyadékutat képezzen, és amely legalább egy nyílás (57, 59, 59\ 59', 61, 63’) magában foglal egy, a saru (19, 19’, 19") oldalfalában (29, 31, 33, 35, 29', 31', 33-, 35', 29", 31", 33". 36”) és/vagy a saruvezetö (21, 21‘, 21") belső falában (53, 53', 53“) kialakított homorú szakaszt,1. A high pressure fuel pump (1) unit for an internal combustion engine comprising a pump (1) comprising: a follower roller (38) which can be coupled with a cam (41} available on a rotary propeller shaft (43); % 19 ") for swinging the piston (3) of the fuel pump; and a guide (21, 2i 21)" formed by a cylindrical insert (23) available in the pump cell housing (6) and having a guide surface (55a-f, 55'ad) for guiding the sara (19,19 ', 19 "); the corner (19, 19', 19") has an upper solution (25) and a lower side (27), a partial cylindrical recess (37) is formed on the lower side (27) of the shank (19, 19 ', 19 ") for cooperation with the roller roller (39), wherein at least one opening (57, 59, 59', 59") is provided , 81, 63) in the corner guide (21, 2T, 21 ") and / or in the corner (19, 19 ', 18") to the top of the shoe (19, 19', 19 ") (2) 5) and lower (27) to form a fluid connection to form at least one fluid path and comprising at least one aperture (57, 59, 59, 59, 61, 63 '), 19 ") (29, 31, 33, 35, 29 ', 31', 33, 35 ', 29", 31 ", 33"). 36 ") and / or a concave section formed in the inner wall (53, 53 ', 53") of the guide (21, 21', 21 "),

2. Az 1. Igénypont szerinti nagynyomású üzemanyag-szivattyú (1) egység, amelyben a legalább egy folyadékát alkalmas arra, hogy folyadékkapcsolatot tartson fenn a szivattyú (1) egység felső bütyokháza (47) és fö bütyökháza (49) között, 3. A 2 igénypont szerinti nagynyomású üzemanyag-szivattyú (1) egység, amely magában foglal továbbá egy megkerülő csatornát (51) a felső bütyökház (47) és a fő bütyökház (49) közötti folyadékkapcsolat biztosítása céljából.The high-pressure fuel pump (1) according to claim 1, wherein the at least one fluid is capable of maintaining a fluid connection between the upper cam housing (47) of the pump (1) and the main cam housing (49). The high-pressure fuel pump (1) according to claim 2, further comprising a bypass channel (51) for providing a fluid connection between the upper cam housing (47) and the main cam housing (49).

4. Az 1..., a 2. vagy a 3., igénypont bármelyike szerinti nagynyomású üzemanyag-szivattyú (1) egység, amelyben a legalább egy nyitás (57, 59. 59', 59“. 61, 63) magában foglal egy, a saru (19, 19', 19") oldalfalában (29, 31, 33, 35, 29'. 31', 33', 35', 29“. 3Γ, 33”, 35") kialakított első csatornát.The high-pressure fuel pump (1) according to any one of claims 1 to 2 or 3, wherein the at least one opening (57, 59, 59 ', 59 ", 61, 63) comprises a first channel formed in the sidewall (19, 19 ', 19 ") (29, 31, 33, 35, 29'. 31 ', 33', 35 ', 29'. 3Γ, 33 ', 35") of the shank (19, 19', 19 ").

5. Az előző Igénypontok bármelyike szerinti nagynyomású üzemanyagszivattyú (1) egység, amelyben a saru (19, 19’, 19“) keresztirányban (Y) nyújtott, és két hosszú oldalfalat (29, 31, 29’, 31 y 29”, 31"), valamint két rövid oldalfalat (33, 35, 33', 35’, 33", 35") foglal magában; ezen hosszú oldalfalak (29, 31, 29’, 31', 29", 31") közöl az egyikben vagy mindkettőben legalább egy nyílás (57, 59, 59’, 59“) van kialakítva.High pressure fuel pump (1) according to any one of the preceding claims, wherein the bracket (19, 19 ', 19 ") extends transversely (Y) and two long side walls (29, 31, 29', 31 y 29 ', 31). ") and two short side walls (33, 35, 33 ', 35', 33", 35 "), these long side walls (29, 31, 29 ', 31', 29", 31 ") in one or both have at least one opening (57, 59, 59 ', 59 ").

6. Az előző igénypontok bármelyike szerinti nagynyomású üzemanyagszivattyú (1) egység, amelyben a legalább egy nyitás (57, 59, 59', 59”, 81, 63) magában foglal egy, a saruvezetőben (21, 21', 21") kialakított második csatornát. 7. A 6. Igénypont szerinti nagynyomású üzemanyag-szivattyú (1) egység, amelyben a második csatornát egy, a saruvezetö (21,21’, 21”) belső felületében (53, 53', 53“) kialakított kivágás képezi.The high-pressure fuel pump (1) according to any one of the preceding claims, wherein the at least one opening (57, 59, 59 ', 59', 81, 63) comprises a cone formed in the guide (21, 21 ', 21 "). 7. A high pressure fuel pump (1) according to claim 6, wherein the second channel is a cutout formed in the inner surface (53, 53 ', 53') of the guide (21,21 ', 21') .

8. Az előző igénypontok bármelyike szerinti nagynyomású üzemanyag-szivattyú (1) egység, amelyben a legalább egy nyílás (57, 59, 59', 59", 81, 83} magában foglal továbbá egy, a saruban (19. 19'. 19") és/vagy a saruvezetőben (21, 21’. 21”) kiaiakitolt furatot (81,63).The high pressure fuel pump (1) according to any one of the preceding claims, wherein the at least one opening (57, 59, 59 ', 59 ", 81, 83) further comprises a hub (19. 19'. 19). ") and / or a bore (81,63) in the guide (21, 21 '. 21").

9. Saru (19. 19', 19“) egy követőgörgövel (39) való együttműködésre egy nagynyomású üzemanyag-szivattyúban (1), amely sarunak (19, 19’, 19“) van egy felső oldala (25), egy alsó oldala (27) és egy oldalfala (29, 31. 33, 36, 29’, 31', 33’, 35’, 29", 31“. 33“, 35"}; egy részhenger alakú mélyedés (37) van kialakítva a saru (19, 19’, 19“) alsó oldalán (27) a követögörgö (39) befogadása céljából; ahol rendelkezésre ál legalább egy nyílás (57. 59, 59', 59”, 61, 63) a saruban (19, 19’, 19") legalább egy folyadéküt képezése céljából a saru (19,19’, 10”) felső (25) és alsó (27) oldala közötti folyadékkapcsolat fenntartása érdekében, és a legalább egy nyílás (57, 59, 59’, 59", 61, 63) magában foglal egy,: a satu (19, 19’, 19") oldalfalában (29, 31, 33, 35, 29', 31', 33', 35’, 29”, 31", 33", 35”) kialakított homorú szakaszt. 10. A 9. igénypont szerinti saru (19, 19’, 19“). amelyben a legalább egy nyílás (57, 59, 59’, 59”, 61, 63) magában foglal egy, a saru (19, 19’, 19") oldalfalában (29, 31, 33, 35, 29', 31 :: 33', 35', 29”, 31", 33"', 35”) kialakított első csatornát il A 9. vagy a 19, igénypont szerinti saru (19, 19\ 19”), amely saru (19, 19', 19”) keresztirányban (Y) nyújtott, és két hosszú oldalfalai (29, 31, 29’, 31. 29", 31"), valamint két rövid oldalfalat (33, 35, 33', 35', 33", 35”) foglal magában; ezen hosszú oldalfalak (33, 35, 33', 35', 33”, 35”) közül az egyikben vagy mindkettőben legalább egy nyílás (57, 59, 59’, 59”, 61 63) van kialakítva. 12. A 9-11 igénypontok bármelyike szerinti saru (19, 19’, 19”), amelyben a legalább egy nyílás (57, 59, 59', 59”, 51,63) magában foglal továbbá egy, a saruban (19, 19’, 19”) kialakított furatot (63); a furat (63) tetszés szerint egybeesik a saru (19, 19119”) alsó oldalán (27) kialakított részhenger alakú mélyedéssel (37).9. Corner (19. 19 ', 19 ") for co-operating with a follow-up roller (39) in a high pressure fuel pump (1) having a top side (25), a lower side (25), a lower side (25). (27) and a sidewall (29, 31, 33, 36, 29 ', 31', 33 ', 35', 29 ", 31", 33 ", 35"}; on the lower side (27) of the heel (19, 19 ', 19 ") for receiving the following roller (39); where at least one opening (57. 59, 59', 59 ', 61, 63) is provided in the hub (19, 19) '19') for forming at least one fluid stream to maintain a fluid connection between the upper (25) and the lower (27) sides of the shank (19,19 ', 10') and at least one opening (57, 59, 59 ', 59) ", 61, 63) includes one, in the sidewall of the satu (19, 19 ', 19") (29, 31, 33, 35, 29', 31 ', 33', 35 ', 29', 31 ", The shoulder (19, 19 ', 19 ") according to claim 9, wherein the at least e The aperture (57, 59, 59 ', 59', 61, 63) includes a sidewall (19, 19 ', 19 ") in the side wall (29, 31, 33, 35, 29', 31 :: 33 '). , 35 ', 29', 31 ", 33" ', 35') a shoulder (19, 19, 19 ") according to claim 9 or 19, which is a shoulder (19, 19 ', 19") ) extends transversely (Y) and has two long side walls (29, 31, 29 ', 31. 29 ", 31") and two short side walls (33, 35, 33', 35 ', 33 ", 35") It includes; one or both of these long side walls (33, 35, 33 ', 35', 33 ', 35') have at least one opening (57, 59, 59 ', 59', 61 63). The shoe (19, 19 ', 19') according to any one of claims 9-11, wherein the at least one opening (57, 59, 59 ', 59', 51.63) further comprises a hub (19, 19, 19 ', 19'). 19 ', 19'); the bore (63) optionally coincides with the cylindrical recess (37) formed on the underside (27) of the shank (19, 19119).

13. Saruvezető (21, 21, 21") egy saru (19. 19’, 19”) vezetésére egy nagynyomású üzemanyag-szivattyúban (1), amely saruvezető (21, 21, 21”) hengeres betétként (23) van kialakítva, és van egy belső fala (53, 53’, 53”), amely legalább egy vezető felületet (S5a~f) határol a saru (19, 19', 19") oldalfalába (29, 31, 33, 35, 29’, 311 33’, 35', 29”, 31”, 33”, 35") való bekapcsolódás céljából; ahol rendelkezésre áll legalább egy nyílás (57, 59, 59', 59“, 81, 63) a saruvezetö (21 21, 21”) belső falában (53, 53’, 53") legalább egy folyadékul képezése céljából a sarun (19, 191 19”) túl; és amely legalább egy nyílás (57, 59, 59’, 59”, 81, 03) magában foglal egy, a saruvezetö (21, 21, 21") belső falában (53, 53’, 53”) kialakított homorú szakaszt.A guide (21, 21, 21 ") for guiding a bristle (19. 19 ', 19") in a high-pressure fuel pump (1) formed as a crankshaft (21, 21, 21 ") cylindrical insert (23); and has an inner wall (53, 53 ', 53') defining at least one conductive surface (S5a ~ f) in the sidewall (19, 19 ', 19 ") of the shank (29, 31, 33, 35, 29', 311 33 ', 35', 29 ', 31', 33 ', 35 "), where at least one opening (57, 59, 59', 59", 81, 63) is provided for the guide (21 21, 21 ') in the inner wall (53, 53', 53 ") for forming at least one liquid over the flange (19, 191 19); and at least one opening (57, 59, 59 ', 59', 81, 03) includes a concave section formed in the inner wall (53, 53 ', 53') of the guide (21, 21, 21).

14. Egység, amely magában foglal egy, a 8-11 Igénypontok bármelyike szerinti sarut (19, 19’, 19”) és egy, a 13. igénypont szerinti saruvezetőt (21, 21, 21”).A unit comprising a socket (19, 19 ', 19') according to any one of claims 8-11 and a guide (21, 21, 21) according to claim 13.

15. Az 1., a 4. és a 6. igénypontok szerinti nagynyomású üzemanyag-szivattyú (1) egység, amelyben a saru (19, 19’, 19") oldalfalában (29, 31, 33, 35, 29', 31, 33', 35’, 29”, 311 331 35”) kialakított első csatorna és â saruvezetőbén (21, 21, 21“) kialakított második csatorna egymáshoz van igazítva, és ahol a folyadékát keresztmetszeti profilja ellipszis vagy kör alakú.High pressure fuel pump (1) according to claims 1, 4 and 6, in which the side wall (29, 31, 33, 35, 29 ', 31) of the shank (19, 19', 19 ") , 33 ', 35', 29 ', 311 331 35') and the second channel formed by the â € œcutter (21, 21, 21) ítva are aligned with each other, and wherein the liquid has a cross-sectional profile in the form of an ellipse or circle.