JP2001073829A - Engine-integrated controller and circuit body used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify wire harness, lighten a weight, and improve productivity by mounting engine control parts such as various kinds of sensors, an engine control circuit, a circuit protecting parts, and a power supply distribution board, and covering the engine control parts with an engine cover. SOLUTION: An engine cover 67 of an engine is composed of an engine cover upper part 69 and an engine cover lower part 71, and a circuit box fixing part 73 is protruded to a lower surface of the engine cover upper part 69. A circuit box fixing part 89 is disposed on an upper surface of the engine cover lower part 71, and a circuit box 45 which is divided into two parts vertically is attached to the fixing part 89. An engine control circuit 11, a circuit protecting parts 15, a power supply distribution board housed in the circuit box 45 other than engine control parts (an ignition coil, an injector, a various kinds of sensors 7 such as an O2 sensor), are attached in an engine cover 67 so as to form an engine integrated type controller.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine-integrated control device in which an engine control component, an engine control circuit, and the like are incorporated in an engine cover, and a circuit body used therein.

[0002]

2. Description of the Related Art As a conventional device of this kind, there is, for example, a device described in Japanese Patent Application Laid-Open No. Hei 10-325356 and a device shown in FIG. That is, in the apparatus shown in FIG. 9, various sensors 7 such as an ignition coil 3, an injector 5, and an O 2 sensor are attached to an engine cover attached to an upper opening of the engine 1. The connection line (not shown) is provided by a power transmission line 8 inside the engine 1.
Electrically connected. As a result, the electrical connection between the ignition coil 3 and the like, which are the engine control parts, and the wire harness 9 is ensured, the routing of the power transmission line 8 around the engine is simplified, and the power transmission line Deterioration can be prevented.

[0003]

However, in the above configuration, the engine control circuit 11 is provided on the vehicle interior side,
Furthermore, since the wiring harness 13 is connected to a circuit protection component 15 such as a fusible link inside the engine room and a power supply 19 via a power distribution board 17 for distributing power, the wire harnesses 9 and 13 are still long. However, the weight of the whole vehicle is increased, and the assembling is complicated, resulting in a decrease in productivity.

[0004] As shown in FIG. 10, connection terminals (connection pads) 11 A on the engine control circuit 11 side corresponding to the terminal portions 7 A to 7 E on the auxiliary device side attached to the engine cover side. 11E to the wire harness 9
, It is necessary to pay attention to the connection positions of both terminals of the wire harness 9 when performing the connection operation. For this reason, the wiring work of the wire harness 9 and the like is complicated, and this is a factor of cost increase when a wire harness is manufactured as a wiring assembly.

An object of the present invention is to provide an engine-integrated control device that can further simplify a wire harness.

[0006]

According to the first aspect of the present invention,
In an engine-integrated control device provided in an engine cover that closes an opening attached to an upper portion of an engine, the engine cover includes an engine cover lower portion attached to the opening, and an engine cover attached to the engine cover lower portion. An engine cover upper part that covers the upper surface of the lower part;
An engine control component such as various sensors, an engine control circuit for controlling the engine by a signal from the engine control component, a circuit protection component for protecting the engine control circuit from overload, and a power supply for distributing a power supply mounted on the vehicle Attaching a distribution board, the engine control part, the engine control circuit, the circuit protection part,
It is characterized by covering the power distribution board.

In this control device, an engine control component, an engine control circuit, a protection component,
By mounting the power distribution board and covering it with the upper part of the engine cover, deterioration of the transmission line is prevented, and wiring of the wire harness is further simplified.

According to a second aspect of the present invention, there is provided the engine-integrated control device according to the first aspect, wherein the engine control component, the engine control circuit, the circuit protection component, and the power distribution board are housed in a conductive circuit box. The circuit box is electrically connected to an engine or a vehicle body.

In this control device, since electromagnetic waves from outside are cut off by the circuit box, protection against ignition noise of the engine can be performed.

The invention according to claim 3 is the engine-integrated control device according to claim 2, wherein the engine control component, the engine control circuit, and the circuit protection component are mounted on the power distribution board and the circuit box is mounted. And a buffer material is provided between the power distribution board and the circuit box.

In this control device, external vibrations can be buffered by the buffer material, and the engine circuit and the like can be protected.

According to a fourth aspect of the present invention, there is provided the engine-integrated control device according to the second aspect, wherein the engine control component, the engine control circuit, and the circuit protection component are mounted on the power distribution board. The engine control circuit includes a radiator plate, the circuit box has a window that exposes the radiator plate to the outside of the circuit box, and the upper and lower portions of the engine cover have a hollow duct therebetween. And an intake port and an exhaust port to the outside of the engine cover.

In this control device, the heat generated by the engine control circuit can be radiated from the window of the circuit box to the outside of the circuit box by the radiator plate.

According to a fifth aspect of the present invention, in the engine-integrated control device according to the fourth aspect, the heat radiating plate has a waterproof packing which is in close contact with a peripheral portion of the window.

With this control device, the engine control circuit and the like can be protected by waterproofing.

According to a sixth aspect of the present invention, there is provided the engine-integrated control device according to any one of the first to fifth aspects, wherein the engine-integrated control device is fitted to the upper edge of the engine cover and the outer edge of the lower portion of the engine cover from outside. Characterized in that a wall portion is provided.

With this control device, it is possible to easily prevent intrusion of water, dust and the like, and it is possible to more reliably protect the internal engine control circuit and the like.

The invention according to claim 7 is the engine-integrated control device according to claim 1, wherein the engine control component, the engine control circuit, and the circuit protection component are mounted on the power distribution board, and The circuit includes printed-circuit-type terminals, the power distribution board includes a slot-type connector for connecting the printed-circuit-type terminals, and the engine control circuit for connecting the printed-circuit-type terminals to the slot-type connector. And a guide rail for guiding and holding the guide rail.

In this control device, the engine control circuit can be directly and easily connected to the board.

The invention according to claim 8 is the engine-integrated control device according to claim 1, wherein the engine control component, the engine control circuit, and the circuit holding component are mounted on the power distribution board, and the power distribution is performed. The board is provided with a connection connector of the ignition coil as the engine control distribution, facing upward, and the ignition coil has a plug portion connected to the connection connector downward.

In this control device, the plug of the ignition coil can be directly and easily connected to the connector of the ignition coil.

According to a ninth aspect of the present invention, there is provided the engine-integrated control device according to the first aspect of the present invention, wherein the upper portion of the engine cover has an ignition coil mounting port for the ignition coil and a circuit protection component for the circuit protection component. A component port is provided so as to penetrate the component port, and a mounting port cover covering the ignition coil mounting port and a port cover covering the circuit protection component port are provided.

In this control device, the ignition coil can be attached from the ignition coil attachment port, and the circuit protection component can be taken out from the circuit protection component outlet. In addition, the ignition coil mounting port can be covered by the mounting port cover, and the circuit protection component outlet can be covered by the outlet cover.

According to a tenth aspect of the present invention, in the engine-integrated control device according to the ninth aspect, a wall portion fitted to an upper portion of the engine cover is provided on a periphery of the mounting cover and the outlet cover. It is characterized by the following.

In this control device, the intrusion of water, dust, and the like can be easily prevented by fitting the peripheral walls of the mounting cover and the outlet cover to the upper portion of the engine cover.

According to an eleventh aspect of the present invention, there is provided a circuit body for use in an engine-integrated control device provided in an engine cover which is attached to an upper opening of an engine and closes the opening, wherein a predetermined wiring pattern is formed. At least a control circuit board for controlling the engine and a circuit protection component for protecting the control circuit board from overload are mounted on the flexible printed circuit board, and are connected to the control circuit board and engine control parts such as various sensors. Connector block is provided.

According to the eleventh aspect of the present invention, by using the flexible printed circuit board, it is possible to reduce the number of electrical connections between the engine control circuit and the engine control parts and to simplify the assembling work. Besides, it is possible to reduce the weight and cost of the engine-integrated control device.

According to a twelfth aspect of the present invention, in the circuit body of the eleventh aspect, the wiring pattern includes a power distribution wiring pattern.

In this circuit body, in addition to the operation of the eleventh aspect of the present invention, since the power supply distribution wiring pattern is included, the mounting of the engine control circuit board can be performed easily and reliably.

According to a thirteenth aspect of the present invention, there is provided the circuit body according to the eleventh or twelfth aspect, wherein the arrangement of the pad portions of the wiring pattern connected to the connector block is a circuit on the engine control component side. It is characterized by being formed corresponding to the pattern arrangement.

In this circuit body, claim 11 and claim 1
In addition to the effects of the invention described in Item 2, the arrangement of the pads of the flexible printed circuit board and the arrangement of the connection pads of the engine control component are matched, so that the wires for connecting the engine control component and the connector block are provided. The structure of the harness can be simplified and its manufacture can be facilitated.

[0032]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of an engine-integrated control device according to the present invention will be described below based on embodiments shown in the drawings.

(Embodiment 1) FIG. 1 is a schematic block diagram of Embodiment 1 of an engine-integrated control apparatus according to the present invention. The components corresponding to those in FIG. 7 are denoted by the same reference numerals, and the description thereof will not be repeated.

In this embodiment, in addition to various sensors 7 such as an ignition coil 3, injectors 5 and 02 sensors, which are engine control parts, an engine control circuit 11, a circuit protection part 15 The power distribution board 17 is also mounted inside the engine cover to form an engine-integrated control device.

The ignition coil 3, the injector 5, the various sensors 7 and the engine control circuit 11 are connected to the engine control circuit 11 by a transmission line 8 inside the engine cover, and the wiring harness 13 is connected to a connection terminal (not shown) attached to the engine cover in close contact. Between the power supply 19 and the power supply 19. Therefore, it is possible to simplify the wiring route of the transmission line 8 around the engine,
In addition, since the wire harness 13 is significantly simplified and shortened, it is possible to prevent an increase in the weight and cost of the entire vehicle, as well as to facilitate the assembling, thereby improving the productivity.

FIGS. 2 to 4 show specific structures.
FIG. 2 is an exploded perspective view of the circuit box and the power distribution board, FIG. 3 is an exploded perspective view of the relationship between the circuit box and the power distribution board and the engine cover, and FIG. FIG. 3 is an exploded perspective view showing an upper structure.

First, as shown in FIG. 2, the power distribution board 17 is provided with a wire harness connection connector 23 on the lower surface. On the upper surface of the power distribution board 17, a connection connector 25 for an ignition coil is provided upward on the periphery thereof.

On one side in the longitudinal direction of the upper surface of the power distribution board 17, a circuit protection component 15 such as a fuse or a fusible link is mounted on a circuit protection component mounting portion 27. An engine diagnostic connector 31 as an engine control component is mounted inside the circuit protection component 15. Adjacent to the engine diagnostic connector 31,
Various sensors 7 such as an O2 sensor which is an engine control part are mounted.

At the center of the upper surface of the power distribution board 17, a slot type connector 33 is provided. The slot-type connector 33 and various sensors 7 and the like, which are engine control parts, are electrically connected by a printed wiring (not shown) as a transmission line. Guide rails 35 extend on both sides of the slot type connector 33.

The control circuit board 37 has the engine control circuit 11 mounted thereon, has a printed circuit board-type terminal 39 at its front end, and has a heat dissipation plate 41 of the engine control circuit 11 on its upper surface. A waterproof packing 43 is provided around the heat sink 41. Then, both edges 37 a of the control circuit board 37 are inserted in the direction of the arrow so as to be guided by the guide rail 35, and the terminal 39 is connected to the slot type connector 33.

The power distribution board 17 includes the circuit box 4
5. The circuit box 45 has a structure in which a circuit box upper part 47 and a circuit box lower part 49 are combined.

The upper part 47 of the circuit box is provided with a heat sink 4
A window 51 for exposing 1 to the outside of the circuit box 45;
A circuit protection component outlet 53, a sensor outlet 55, and a connector port 57 are provided. In addition, circuit box upper part 47
Is provided with an ignition coil connector insertion opening 59 in the peripheral portion of the connector. The periphery of the window 51 of the circuit box upper part 47 is bulged upward, and a cushioning material 61 is provided on the lower surface side. The cushioning member 61 buffers between the power distribution board 17 and the circuit box 45.

The lower part 49 of the circuit box is provided with a cushioning material 63 on the upper surface thereof. The cushioning material 63, together with the cushioning material 61, is connected to the power distribution board 17 and the circuit box 45.
And buffering between them. The circuit box 49 has an outlet 65 of the wire harness connection connector 23.
Is provided.

Then, the circuit box upper part 47 and the lower part 49 are aligned with the power supply distribution board 17 therebetween, and the wire harness connection connector 23 is projected downward from the outlet 65 to connect the ignition coil connection connector 25 to the circuit box. It is made to protrude upward from the connector insertion opening 59 of the upper part 47. The radiator plate 41 projects from the window 51, and the circuit protection component 15, the various sensors 7, and the engine diagnostic connector 31 project upward from the outlets 53, 55, 57, respectively.

The connection between the circuit box upper portion 47 and the circuit box lower portion 49 can be performed by bonding or the like. However, when the circuit box upper portion 47 and the circuit box lower portion 49 are fixed to the engine 1 in a conductive state by fixing bolts (not shown), they can be narrowed together. it can.

The circuit box 45 and the control circuit board 37
3 is shown in FIG. FIG.
The engine cover 67 is shown.

The engine cover 67 comprises an upper portion 69 of the engine cover and a lower portion 71 of the engine cover. A circuit box fixing portion 73 protrudes from the lower surface of the upper portion 69 of the engine cover. The circuit box fixing portion 73 is formed in a key shape so as to position each corner of the circuit box 45.

On the upper surface of the engine cover upper part 69, three ignition coil mounting ports 75 and three ignition coil connector connection ports 77 are provided on the left and right sides.

However, the ignition coil connector connection port 77
In the drawing representation, only three on one side are shown.

The portion where the ignition coil mounting port 75 and the ignition coil connector connection port 77 are provided is a concave portion 79 on the upper surface of the engine cover upper portion 69. A circuit protection component outlet 81 is provided on one side of the center of the upper portion 69 of the engine cover.
The periphery of 1 is also a concave portion 83.

At the periphery of the engine cover upper part 69, there is provided a wall part 69a that fits from the outside to the periphery 71a of the engine cover lower part 71. Upper engine cover 69
Is provided with a drain groove 84.

The engine cover lower portion 71 is provided with an intake port 85 and an exhaust port 87 to the outside of the cover. A circuit box fixing portion 89 is provided on the upper surface of the lower portion 71 of the engine cover. At the lower part 71 of the engine cover, an ignition coil mounting opening 91 is provided.
Nine ignition coil mounting ports 75 are provided. The lower portion 71 of the engine cover is provided with a wire harness connection connector outlet 93 inside the circuit box fixing portion 89.

Then, the circuit box 45 is attached to the circuit box fixing portion 89 of the lower portion 71 of the engine cover.
The engine cover upper part 69 is assembled so as to match the engine cover lower part 71. At this time, the circuit box fixing section 89 fixes the periphery of the circuit box 45, and the circuit box fixing section 73 fixes the corner of the circuit box 45.

The wire harness connection connector 23
Project downward from the outlet 93, and the ignition coil connection connector 25 projects from the ignition coil connector connection port 77. The circuit protection component 15, the various sensors 7, and the engine diagnostic connector 31 are exposed at the circuit protection component outlet 81.

The wall 69a of the upper part 69 of the engine cover
Is fitted from the outside to the peripheral edge 71a of the engine cover lower part 71. Thus, a hollow duct is formed inside the engine cover 67.

As shown in FIG. 4, an ignition coil 95 is mounted on each mounting opening 75 of the upper portion 69 of the engine cover, and is fixed to the upper portion 69 of the engine cover by screws 97. The ignition coil 95 has a plug portion 95a facing downward, and is connected to the ignition coil connection connector 25.

The ignition coil 95 is covered with a mounting cover 99. A wall 99 a is provided on the peripheral edge of the mounting cover 99, and the recess 7 in the upper portion 69 of the engine cover is provided.
9 is fitted. The circuit protection component outlet 81 is covered with an outlet cover 101. The outlet cover 101 is provided with a wall portion 101a on the peripheral edge thereof, and is configured to fit into the concave portion 83 exactly.

Therefore, according to this structure, not only the engine control components 3, 5, and 7, but also the engine control circuit 11, the circuit protection component 15, and the power distribution board 17 are mounted in the engine cover 67 to obtain the above-described effects. Can be.

Other characteristics are as follows: (a) Protection of circuit parts against ignition noise from engine The circuit box 45 is formed of a conductor, for example, a metal plate or a conductive resin molded body. . Circuit box upper part 4
7. By combining the circuit box lower part 49,
The entire circuit box 45 is a housing that blocks electromagnetic waves from outside. Ground is fixed via fixing bolts when fixing the power distribution board 17 to the circuit box 45 as described above.
This is done by connecting to the engine body or to the vehicle body.

Accordingly, protection of the engine control circuit 11 and the like against ignition noise from the engine can be reliably performed.

(B) Protection of Circuit Components Against Vibration from Engine Body and Vibration When Running Vehicle The circuit box 45 has cushioning members 61 and 63 in a fixed portion to which the power distribution board 17 is attached, and is protected from external vibration. The power distribution board 17 included therein is protected. Therefore, the vibration from the engine 1 and the vibration when the vehicle is running are
The protection of the engine control circuit 11 and the like can be reliably performed.

(C) Cooling for Heat Generation from Control Circuit The control circuit board 37 includes a heat radiating plate 41 for radiating heat generated from the constituent elements. The circuit box 45 is provided with a window 51 for exposing the heat radiating plate 41 to the outside of the box, and the assembled state is as shown in FIG.
The engine cover 67 has a hollow duct shape when assembled, and has an intake port 85 and an exhaust port 87. By fixing the circuit box 45 to the engine cover 67, heat generated from the control circuit board 37 can be efficiently cooled. The air flow is
Naturally, the positive or negative pressure of an external radiator fan or the like is used, and the intake port 85 has an efficient structure according to the conditions of the vehicle. Therefore, it is possible to efficiently cool the heat generated from the engine control circuit 11 and the like.

(D) Protection of circuit components against water and dust from outside the vehicle A radiator plate 41 attached to the control circuit board 37;
Various connectors 23 and 25 mounted on the power distribution board 17 of the power distribution system, and a circuit protection component mounting portion 27;
The engine diagnostic connector 31 includes the waterproof packing 28,
3 is sandwiched between the circuit boxes 45, so that intrusion of water dust from the outside can be prevented.

The wall 69 of the upper part 69 of the engine cover
Since a is assembled so as to surround the peripheral edge 71a of the engine cover lower portion 71 from the outside, it has a simple waterproof structure for preventing intrusion of water and dust from the upper surface and side surfaces.

Further, the mounting port cover 99 and the outlet port cover 101 also have the same simple waterproof structure by fitting the wall portions 99a, 101a into the concave portions 79, 83, and have a drain groove 84.

Therefore, with these structures, it is possible to prevent water, dust, and the like from entering from the ignition coil mounting port 75 and the circuit protection component outlet 81, and to prevent water and dust from coming out of the vehicle.
It is possible to more reliably protect the engine control circuit 11 and the like against dust.

(E) Direct connection between control circuit and circuit protection component The connection circuit board 37 and the circuit protection component 15 are mounted on the power distribution board 17 to perform power distribution. For the direct connection of the control circuit board 37, the electrical connection part is a printed circuit board type terminal 3.
9 The power distribution board 17 for performing power distribution includes a terminal 3
9 and a guide rail 35 for assisting the guidance of the control circuit board 37. Therefore, direct connection between the engine control circuit 11 included in the control circuit board 37 and the circuit protection component 15 on the power distribution board 17 can be easily and reliably performed.

(F) Direct connection between ignition coil and power distribution board For direct connection between the ignition coil 95 and the power distribution board 17 of the power distribution system, the power distribution board 17 has the ignition coil connection connector 25 facing upward. In addition, the ignition coil 95 is also provided with the plug portion 95a facing downward, thereby making direct connection easy and reliable.

(Embodiment 2) Next, Embodiment 2 of the engine-integrated control device will be described with reference to FIGS. The second embodiment includes a circuit body according to the present invention. In the description of the configuration of the present embodiment, the same portions as those of the engine-integrated control device in the above-described first embodiment are denoted by the same reference numerals. 5 is a schematic block diagram of the present embodiment, FIG. 6 is an exploded perspective view, FIG. 7 is a perspective view showing a mounted state of a flexible printed circuit (hereinafter, referred to as FPC) as a circuit, and FIG. It is explanatory drawing which shows the terminal pattern arrangement | sequence of the connected engine connection circuit, and the terminal pattern arrangement | sequence of the auxiliary | assistant device side which connects with FPC.

As shown in FIG. 5, in the second embodiment, the FPC 110 is arranged and stored in the engine cover 67 of the engine 1. In the FPC 110, a wiring pattern and a power distribution wiring pattern 17A (not shown) are formed. The FPC 110 is mounted with a control circuit board (ECU) 37 on which the engine control circuit 11 is mounted and the circuit protection component 15 in addition to the ignition coil 3 and the injector 5 as engine control parts. Is configured.

As shown in FIG. 7, the ignition coil 3, the injector 5 and the like mounted on the FPC 110 are connected to a wiring pattern patterned in the FPC 110. As shown in the figure, a heat dissipation plate 114 having good thermal conductivity such as metal is provided in a region on the FPC 110 where heat-generating electronic components are mounted, so that heat dissipation can be improved. In this case, by securing heat dissipation, high-density mounting on the FPC 110 is enabled, and the FPC 110 can be reduced in size. Further, the control circuit board 37 includes the FPC 110
Is connected to the connector block 111 mounted on the wiring pattern. Further, a wire harness W connected to various sensors 7 and the like is connected to the connector block 111 by a harness-side connector 112 (see FIG. 6). Also in the present embodiment, the range in which the wire harness W is routed is a very small range between a connection terminal on the power supply 19 side (not shown) which is attached in close contact with the engine cover. Therefore, the wiring route of the wire harness W around the engine can be simplified, and the wire harness W is significantly simplified and shortened. , And productivity can be improved.

The FPC 110 includes a branch circuit body 110A as shown in FIG. 6. For example, the branch circuit body 110A can be connected to a power supply or the like and can be used as a ground wiring. The FPC 110 is provided with a sub-wire harness connector 113. For example, the FPC 110 can be designed so as to increase the number of connected sensors or to select a connection terminal according to the type of connected sensor. It has become.

FIG. 8 shows the arrangement of the wiring terminals of the connector block 111 in the FPC 110 and the connection terminal portions 37A on the control circuit board 37 side. In the present embodiment, the wiring pattern of the FPC 110 is
It is patterned so as to correspond to the arrangement of the connection terminal portions 37A on the side. Therefore, the connection between the FPC 110 and the control circuit board 37 is easy and reliable, and the connection workability can be greatly improved.

As described above, the circuit distribution using the FPC 110 enables the control circuit board 3 for controlling the engine.
7, the number of electrical connections to the auxiliary device can be reduced, and it is possible to reduce the weight and cost. That is, conventionally, the connector on the control circuit side is connected to the circuit distribution component via the wire harness, and further, the circuit distribution component is connected to the auxiliary device via the wire harness. Although it became heavy and the cost of the wire harness was increased, by using the FPC 110 as in this embodiment, the control circuit board 3
Since the wire harness between the FPC 7 and the FPC 110 can be eliminated, weight reduction and cost reduction can be achieved.

Further, the FPC 110 does not require wire cutting, stripping of insulation coating, terminal mounting work, terminal housing work, and wiring work as in the case of a wire harness. Can be achieved.

The second embodiment has been described above. However, other configurations, operations, and effects of the second embodiment are substantially the same as those of the first embodiment, and therefore, description thereof will be omitted.

The present invention is not limited to the first and second embodiments described above, and various design changes accompanying the gist of the configuration are possible.

[0078]

According to the first aspect of the present invention, an engine control component such as various sensors, an engine control circuit, a circuit protection component, and a power distribution board are attached to the lower portion of the engine cover, and are covered by the upper portion of the engine cover. Therefore, it is possible to simplify the wiring route of the transmission line around the engine, prevent deterioration of the transmission line, and further simplify the wiring of the wire harness, reduce the weight, and It is also possible to prevent a decrease in productivity.

According to the second aspect of the invention, in addition to the effect of the first aspect, the conductor circuit box serves as a housing for shielding electromagnetic waves from the outside, and protects a control circuit and the like against ignition noise from the engine. be able to.

According to the third aspect of the invention, in addition to the effect of the second aspect of the invention, external vibrations can be buffered by the cushioning material between the board and the circuit box, so that vibrations from the engine body and vehicle running can be reduced. It is possible to protect the engine control circuit and the like against vibration at the time.

According to the invention of claim 4, in addition to the effect of the invention of claim 2, the heat of the engine control circuit can be radiated from the window of the circuit box to the outside of the circuit box by the radiator plate.
In addition, outside air can be sucked in from the intake port and exhausted from the exhaust port in a hollow duct formed between the upper and lower portions of the engine cover, and the cooling can be performed efficiently.

According to the fifth aspect of the present invention, in addition to the effect of the fourth aspect of the present invention, the prevention packing can prevent water and dust from entering from the window of the circuit box, thereby ensuring protection of the engine control circuit and the like. Can be done.

According to the sixth aspect of the present invention, in addition to the effects of the first to fifth aspects of the present invention, the outer peripheral wall of the upper portion of the engine cover is fitted to the outer peripheral portion of the lower portion of the engine cover from the outside to prevent water, dust and the like. Intrusion can be easily prevented, and the internal engine control circuit and the like can be more reliably protected.

According to the seventh aspect of the present invention, in addition to the effect of the first aspect of the present invention, the engine control circuit is guided and held on the power distribution board along the guide rail, so that the engine control circuit has a printed circuit board. The terminals are connected to the slot type connector on the board, and the engine control circuit can be directly and easily connected to the board.

According to the eighth aspect of the present invention, in addition to the effects of the first aspect, the plug portion of the ignition coil is directed downward and directly and easily connected to the connector for the upward ignition coil provided on the power distribution board. Can be connected.

According to the ninth aspect of the present invention, in addition to the effects of the first aspect of the present invention, the ignition coil can be mounted from the ignition coil mounting port while the upper portion of the engine cover is assembled to the lower portion of the engine cover, and the circuit can be mounted. The circuit protection component can be taken out from the protection component outlet. In addition, the ignition coil mounting opening can be covered by the outlet cover, and the circuit protection component outlet can be covered by the outlet cover, so that the ignition coil and the circuit protection component can be reliably protected.

According to the tenth aspect, in addition to the effects of the ninth aspect, the peripheral wall portions of the mounting cover and the outlet cover are fitted to the upper portion of the engine cover.
Intrusion of water, dust, and the like can be easily prevented, and the ignition coil and the circuit protection component can be more reliably protected.

According to the eleventh aspect of the present invention, by using the flexible printed circuit board, the number of electrical connections between the engine control circuit and the engine control parts can be reduced to simplify the assembling work, and to reduce the engine load. This has the effect of reducing the weight and cost of the body control device.

According to the twelfth aspect of the present invention, in addition to the effect of the eleventh aspect, since the power supply distribution wiring pattern is included, the engine control circuit board can be easily and reliably mounted.

According to the thirteenth aspect, in addition to the effects of the eleventh and twelfth aspects, the structure of the wire harness for connecting the engine control component and the connector block can be simplified, and the manufacturing thereof can be facilitated. Can be

[Brief description of the drawings]

FIG. 1 is a block diagram showing Embodiment 1 of an engine-integrated control device according to the present invention.

FIG. 2 is an exploded perspective view showing an upper portion of the circuit box, a lower portion of the circuit box, and a base according to the first embodiment.

FIG. 3 is an exploded perspective view showing a circuit box, an upper portion, and a lower portion of an engine cover according to the first embodiment.

FIG. 4 is an exploded perspective view showing an engine cover and an upper part of the engine cover in the first embodiment.

FIG. 5 is a schematic block diagram showing Embodiment 2 of the engine-integrated control device according to the present invention.

FIG. 6 is an exploded perspective view of the engine-integrated control device according to the second embodiment.

FIG. 7 is a perspective view showing an FPC (circuit body) according to a second embodiment.

FIG. 8 is an explanatory plan view showing an arrangement of terminals of an FPC-side connector block and an arrangement of connection terminal portions of a control circuit board according to a second embodiment.

FIG. 9 is a block diagram showing a conventional control device.

FIG. 10 is an explanatory diagram showing an example of arrangement of terminals on an engine control circuit side and terminals on various auxiliary devices in a conventional control device.

[Explanation of symbols]

 Reference Signs List 1 engine 3 ignition coil (engine control part) 5 injector (engine control part) 7 sensor (engine control part) 11 engine control circuit 15 circuit protection part 17 power distribution board 19 power supply 28, 43 waterproof packing 35 guide rail 37 control circuit base 39 printed circuit board terminal 41 radiator plate 45 circuit box 51 window 61 cushioning material 67 engine cover 69 upper engine cover 69a wall 71 lower engine cover 71a peripheral edge 85 intake port 87 exhaust port 95 ignition coil 95a plug section 99 mounting port cover 99a Wall 101 Outlet cover 101a Wall

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3G019 AA05 BA01 KB09 KC09 KD05 KD07 3G024 AA05 AA72 AA74 BA10 BA11 CA20 DA01 DA08 DA17 EA01 FA02 FA08 FA13 FA14 GA31 GA35 3G301 HA01 HA02 HA03 HA06 JA09 JA32

Claims (13)

[Claims] 1. An engine-integrated control device provided in an engine cover attached to an upper opening of an engine and closing the opening, wherein the engine cover is attached to a lower portion of the engine cover attached to the opening, and attached to a lower portion of the engine cover. An engine control part such as various sensors, an engine control circuit for controlling an engine by a signal from the engine control part, and an engine control circuit for controlling an engine based on a signal from the engine control part. Attach a circuit protection component for protecting the engine control circuit from overload, and a power distribution board for distributing on-board power, the engine control component by the upper part of the engine cover,
An engine-integrated controller that covers an engine control circuit, a circuit protection component, and a power distribution board. 2. The engine-integrated control device according to claim 1, wherein the engine control component, the engine control circuit, the circuit protection component, and the power distribution board are accommodated in a conductor circuit box. An engine-integrated control device, which is electrically connected to an engine or a vehicle body. 3. The engine-integrated control device according to claim 2, wherein the engine control component, the engine control circuit, and the circuit protection component are mounted on the power distribution board and housed in the circuit box. An engine-integrated control device, comprising a buffer between a distribution board and a circuit box. 4. The engine-integrated control device according to claim 2, wherein the engine control component, the engine control circuit, and the circuit protection component are mounted on the power distribution board and housed in the circuit box. The control circuit includes a heat sink, the circuit box has a window that exposes the heat sink to the outside of the circuit box, and the engine cover upper part and the engine cover lower part form a hollow duct therebetween. An engine-integrated control device, comprising an intake port and an exhaust port to the outside of the engine cover. 5. The engine-integrated control device according to claim 4, wherein the heat sink has a waterproof packing that is in close contact with a peripheral portion of the window. 6. The engine-integrated control device according to claim 1, wherein a wall portion is provided on an outer periphery of the upper portion of the engine cover so as to be fitted to an outer periphery of the lower portion of the engine cover from outside. An engine-integrated control device, characterized in that: 7. The engine-integrated control device according to claim 1, wherein the engine control component, the engine control circuit, and the circuit protection component are mounted on the power distribution board, and the engine control circuit is a printed circuit board. And a guide rail for guiding and holding the engine control circuit when connecting the substrate-printed terminal to the slot-type connector. 8. The engine-integrated control device according to claim 1, wherein the engine control component, the engine control circuit, and the circuit protection component are mounted on the power distribution board, and the power distribution board is configured to control the engine control. An engine-integrated control, comprising: an ignition coil connection connector for an ignition coil as a component, provided upward, and the ignition coil having a plug portion, which is connected to the ignition coil connection connector, downward. apparatus. 9. The engine-integrated control device according to claim 1, wherein the upper portion of the engine cover penetrates an ignition coil mounting opening of the ignition coil and a circuit protection component outlet of the circuit protection component. An engine-integrated control device, comprising: a mounting port cover that covers the ignition coil mounting port; and an outlet cover that covers the circuit protection component outlet. 10. The engine-integrated control device according to claim 9, wherein a wall portion fitted on an upper portion of the engine cover is provided on a peripheral edge of the mounting cover and the outlet cover. Integrated control device. 11. A circuit body used for an engine-integrated control device provided in an engine cover attached to an opening at an upper part of an engine and closing the opening, wherein a flexible printed circuit board on which a predetermined wiring pattern is formed is provided. At least a control circuit board that controls the engine and a circuit protection component that protects the control circuit board from overload are mounted, and a connector block that is connected to the control circuit board and engine control components such as various sensors is provided. A circuit body characterized in that: 12. The circuit body according to claim 11, wherein the wiring pattern includes a power distribution wiring pattern. 13. The circuit body according to claim 11, wherein an arrangement of pads of a wiring pattern connected to the connector block corresponds to an arrangement of a circuit pattern of the engine control component. A circuit body characterized by being formed.