We claim:
1. A high-pressure fuel supply pump (16) for an internal combustion engine (10), comprising
a pump housing (28), and
an electromagnetic actuator mechanism (24) integrated into the pump housing and operable to adjust the fluid quantity supplied by the fuel supply pump (16),
a magnetic circuit (91) of the actuator mechanism (24) being closed by at least a region of the pump housing (28).
2. The fuel supply pump (16) according to claim 1, wherein the actuator mechanism (24) comprises a yoke element (88) made of a magnetic material that is positioned and connected to the pump housing (28) so that it at least contributes to the closing of the magnetic circuit (91).
3. The fuel supply pump (16) according to claim 1, wherein, at the end of a magnet armature (62) oriented toward the pump housing (28), the actuator mechanism (24) comprises a connecting element 52 for attachment to the pump housing (28) and at the end of the magnet armature (62) oriented away from the pump housing (28), the actuator mechanism (24) comprises an armature counterpart (102), and wherein the connecting element (52) and the armature counterpart (102) are connected to each other by means of a sleeve element (54) made of a nonmagnetic or dielectric material.
4. The fuel supply pump (16) according to claim 2, wherein, at the end of a magnet armature (62) oriented toward the pump housing (28), the actuator mechanism (24) comprises a connecting element 52 for attachment to the pump housing (28) and at the end of the magnet armature (62) oriented away from the pump housing (28), the actuator mechanism (24) comprises an armature counterpart (102), and wherein the connecting element (52) and the armature counterpart (102) are connected to each other by means of a sleeve element (54) made of a nonmagnetic or dielectric material.
5. The fuel supply pump (16) according to claim 3, wherein the connecting element (52) is welded to the sleeve element (54) and the sleeve element (54) is welded to the armature counterpart (102) and all three elements (52, 54,102) constitute at least part of a preassembled hydraulic assembly (48).
6. The fuel supply pump (16) according to claim 4, wherein the connecting element (52) is welded to the sleeve element (54) and the sleeve element (54) is welded to the armature counterpart (102) and all three elements (52, 54,102) constitute at least part of a preassembled hydraulic assembly (48).
7. The fuel supply pump (16) according to claim 5, wherein the connecting element (52) is welded (86) to the pump housing (28).
8. The fuel supply pump (16) according to claim 3, wherein the armature counterpart (102) at least indirectly constitutes a stop for an actuating element (60) of the actuator mechanism (24) and is connected to the sleeve element (54) in a precisely measured fashion so that it establishes one end position of the actuating element (60).
9. The fuel supply pump (16) according to claim 1, wherein the actuator mechanism (24) comprises a magnetic coil (74) made of brass.
10. The fuel supply pump (16) according to claim 1, wherein the actuator mechanism (24) comprises a separate electrical assembly (50).
11. The fuel supply pump (16) according to claim 10, wherein the electrical assembly (50) is secured to the pump housing (28) by a yoke element (88).
12. The fuel supply pump according to claim 10, wherein the electrical assembly (50) is prestressed in the installed position by a prestressing element (92).
13. The fuel supply pump according to claim 11, wherein the electrical assembly (50) is prestressed in the installed position by a prestressing element (92).
14. The fuel supply pump (16) according to claim 1, wherein the actuator mechanism (24) comprises an actuating element (60) which engages a valve element (42) of the fuel supply pump (16) at a location that is off-center in relation to the valve element (42).
15. The fuel supply pump (16) according to claim 14, wherein the longitudinal axis of the actuating element (60) is disposed at an angle (W) that is not equal to 900 in relation to a plane of the valve element (42).
16. The fuel supply pump (16) according to claim 14, wherein the longitudinal axis of the actuating element (60) is offset from the center of the valve element (42) by the distance (S).
17. The fuel supply pump (16) according to claim 15, wherein the longitudinal axis of the actuating element (60) is offset from the center of the valve element (42) by the distance (S).
18. The fuel supply pump (16) according to claim 1, comprising two chambers adjoining the two end surfaces of a magnet armature (62) are connected to each other via a fluid connection (63).
19. The fuel supply pump according to claim 18, wherein the fluid connection comprises at least one preferably spiral-shaped groove (63) in the circumference surface of the magnet armature (62).
20. The fuel supply pump (16) according to claim 3, further comprising a fluid connection (70) connecting the ends of the connecting element (52) oriented toward the pump housing (28) and the magnet armature (62).
21. The fuel supply pump (16) according to claim 14, further comprising a fluid connection (70) connecting the ends of the connecting element (52) oriented toward the pump housing (28) and the magnet armature (62).
22. The fuel supply pump (16) according to claim 1, wherein the actuator mechanism (24) comprises a first stop element (68) that is fastened by means of a spot weld (78) and can be contacted by the end of an actuating element (60) of the actuator mechanism (24) oriented away from an inlet valve (36) of the fuel supply pump (16) during the movement of the actuating element (60).
23. The fuel supply pump (16) according to claim 1, wherein the actuator mechanism (24) comprises a second stop element (58) that is integrated into a guide of an actuating element (60) of the actuator mechanism (24) and limits the stroke of the actuating element (60) in the direction of an inlet valve (36) of the fuel supply pump (16).
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An electronic control unit for a vehicle, the electronic control unit containing a storage media that stores a vehicle identification code and failure diagnosis related information as well, the failure diagnosis related information indicating (i) an execution or a non-execution of a failure diagnosis, and (ii) an execution result of the failure diagnosis,
the electronic control unit comprising:
a rewriting section configured to rewrite the vehicle identification code when a rewriting instruction for the vehicle identification code is inputted;
a history writing section configured to write, in the storage media, history information when the rewriting section rewrites the vehicle identification code, the history information indicating an execution of the rewriting of the vehicle identification code; and
an elimination section configured to eliminate the history information written by the history writing section when a prescribed condition is satisfied,
wherein the elimination section eliminates the failure diagnosis related information together with the history information.
2. The electronic control unit according to claim 1, wherein
the elimination section eliminates the failure diagnosis related information together with the history information when an elimination instruction is inputted from a device outside of the vehicle.
3. An electronic control unit for a vehicle, the electronic control unit containing as storage media (i) a nonvolatile memory in which data rewriting is electrically enabled, and (ii) a volatile memory serving as a backup memory in which data storage is enabled with an electric power always supplied from a battery, the nonvolatile memory storing a vehicle identification code, the backup memory storing failure diagnosis related information that indicates an execution or a non-execution of a failure diagnosis and an execution result of the failure diagnosis,
the electronic control unit comprising:
a rewriting section configured to rewrite the vehicle identification code when a rewriting instruction for the vehicle identification code is inputted; and
a history writing section configured to write, in the backup memory, history information when the rewriting section rewrites, the history information indicating an execution of the rewriting of the vehicle identification code.
4. An electronic control unit for a vehicle, the electronic control unit containing a storage media that stores a vehicle identification code and failure diagnosis related information as well, the failure diagnosis related information indicating (i) an execution or a non-execution of a predetermined failure diagnosis, and (ii) an execution result of the predetermined failure diagnosis,
the electronic control unit comprising:
a rewriting section configured to rewrite the vehicle identification code when a rewriting instruction for the vehicle identification code is inputted;
a history writing section configured to write, in the storage media, history information when the rewriting section rewrites the vehicle identification code, the history information indicating an execution of the rewriting of the vehicle identification code;
a determination section configured to determine whether the predetermined failure diagnosis corresponding to the failure diagnosis related information stored in the storage media is thoroughly executed after the rewriting section rewrites the vehicle identification code; and
an elimination section configured to eliminate the history information written by the history writing section when the determination section determines that the predetermined failure diagnosis is thoroughly executed.
5. The electronic control unit according to claim 4, wherein
the determination section determines that the predetermined failure diagnosis is not thoroughly executed until a travel amount, which the vehicle travels after the rewriting section rewrites the vehicle identification code, exceeds a predetermined amount; and
the determination section determines that the predetermined failure diagnosis is thoroughly executed when the travel amount exceeds the predetermined amount.
6. The electronic control unit according to claim 1, further comprising:
a rewriting notification section configured to cause an alarm lamp mounted in the vehicle to turn on for a duration from when the rewriting section rewrites the vehicle identification code to when the history information is eliminated from the storage media.
7. The electronic control unit according to claim 6, communicating via an in-vehicle network within the vehicle with an alarm device that is connected with the alarm lamp, the alarm device causing the alarm lamp to turn on when there is arising an electronic control unit with which communications via the in-vehicle network are interrupted,
wherein the rewriting notification section interrupts communications with the alarm device for a duration from when the rewriting section rewrites the vehicle identification code to when the history information is eliminated from the storage media, thereby turning on the alarm lamp through the alarm device.
8. The electronic control unit according to claim 1, further comprising:
a restriction section configured to restrict a travel of the vehicle for a duration from when the rewriting section rewrites the vehicle identification code to when the history information is eliminated from the storage media.
9. An information management system for a vehicle, the system comprising:
at least two electronic control units including a first electronic control unit and at least one second electronic control unit, the at least two electronic control units being communicated via an in-vehicle network within the vehicle,
the first electronic control unit storing a vehicle identification code, at least the first electronic control unit out of the at least two electronic control units storing failure diagnosis related information indicating an execution or a non-execution of a failure diagnosis and an execution result of the failure diagnosis,
the first electronic control unit comprising:
a rewriting section configured to rewrite the vehicle identification code when a rewriting instruction for the vehicle identification code is inputted;
a history writing section configured to write, in a storage media of one of the at least one second control unit, history information when the rewriting section rewrites, the history information indicating an execution of the rewriting of the vehicle identification code; and
an elimination section configured to eliminate the failure diagnosis related information from a storage media contained in the first electronic control unit when an elimination instruction is inputted from a device outside of the vehicle via the in-vehicle network,
wherein the one of the at least one second control unit that stores the history information eliminates the history information from the storage media contained in the one of the at least one second electronic control unit when the elimination instruction is inputted via the in-vehicle network.
10. The information management system according to claim 9, wherein:
the history writing section further writes the history information in a storage media contained in the first electronic control unit; and
the elimination section eliminates the history information together with the failure diagnosis related information.
11. The information management system according to claim 9, wherein
the one of the at least one second electronic control unit, which stores the history information, is connected with an alarm lamp, and causes the alarm lamp to turn on from when the history information is stored in the storage media contained in the one of the at least one second electronic control unit to when the history information is eliminated from the storage media contained in the one of the at least one second electronic control unit.