JPH04203437A - Control equipment for vehicle - Google Patents

Abstract

PURPOSE:To enhance a cooling effect for electronic parts by mounting a control device and a hot-wire type air meter integrally onto an air cleaner body. CONSTITUTION:A structure in which a control device, for example, an engine control device and a hot-air type air meter are integrally formed, is adapted to an air cleaner body 2. A heat radiating plate 6 and a hot-wire 7 for exothermic electronic parts fitted onto a circuit substrate 5 in this structure are disposed in an air cleaner intake air passage 8, so that a heat radiating and cooling effect for the exothermic electronic parts is thereby enhanced by the heat radiating plate 6.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an automobile control device installed in an engine compartment, and in particular, an automobile control device that improves the cooling effect of electronic parts, has noise resistance, and reduces total cost. Regarding control equipment.

[Prior art] Conventionally, as a control device for automobiles, the
and U.S. Patent No. 4°130.856.
There was something mentioned in the issue. The former has a structure in which an air cleaner and a hot wire air flow meter are combined, and only the rectifying grid of the hot wire air flow meter is integrated with the air cleaner.

In addition, the latter integrates an air cleaner and an automobile control device, and the circuit board of the control device is housed inside the round air cleaner body.In particular, the U-shaped heat sink of the power transistor is inhaled. It is arranged so as to be in contact with the air flowing through the air passage to improve the cooling effect.

However, as a control device for automobiles, a control device (for example, an engine control bag and a hot wire air flow meter integrally formed in the air cleaner body, or a hot wire air flow meter installed as a part of the air cleaner body) There is no such device in which the controller and the control device are integrated, and there is no such device in which the integrated device is detachably attached.

[Problems to be Solved by the Invention] Among the above-mentioned conventional techniques, the former one described in JP-A-59-619 provides a rectifying grid in the air cleaner to improve the accuracy of flow rate measurement and to change the shape of the chamber. However, it does not have a structure that completely integrates the air cleaner and hot wire air flow meter, but has a structure in which the hot wire of the hot wire air flow meter is easily affected by the upstream air system. Therefore, if the structure of the air cleaner changes depending on the vehicle model, the structural matching with the hot wire air flow meter will be insufficient, making it impossible to obtain the required flow rate measurement accuracy. Furthermore, the former uses a 1m to 2m harness, etc. to electrically connect the control device and the hot-wire air flow meter, so the impedance of the connection becomes high, which may vary depending on the vehicle model. There are problems in that this may affect resistance to radio wave interference and noise resistance, and countermeasures against these effects are required.

Moreover, among the above-mentioned prior art, the latter U.S. Patent No. 4, +30
．． The device described in No. 856 has an automotive control device built into a round air cleaner body, and has a structure that can efficiently cool heat-generating parts used in the control device. Since the structure is not such that it can be replaced efficiently, there are problems in that in the event that the control device breaks down, the device itself must be disassembled or the entire device must be replaced.

The present invention was devised to eliminate such gaps, and its purpose is to improve the cooling effect of electronic parts and the maintenance efficiency of control equipment in automobile control equipment installed in the engine compartment. In addition, we provide automotive control equipment that has good resistance to radio interference and noise, and reduces the influence of the upstream air system to reduce the measurement error of hot wire air flowmeters that occurs when changing vehicle models. It's about doing.

[Means for Solving the Problems] In order to achieve the above object, the automotive control device of the present invention employs the following means.

First, the air cleaner body has a control device (e.g.
Adopting a structure in which the engine control bag W) and a hot-wire air flow meter are integrally formed, a heat sink and a heat wire for the heat-generating electronic components mounted on the circuit board of the structure are arranged in the air cleaner intake air passage, The heat dissipation and cooling effect for the heat generating electronic components is enhanced through the heat dissipation plate.

Second, the electrical connection between the control device and each component in the hot-wire air flow meter is made without using a harness or the like; The electrical connection between the processing circuit in the air flow meter and the circuit board of the control device, or the electrical connection between the circuit boards, is made directly using nickel wire, etc., without using a harness, etc., to prevent radio interference. Improved noise resistance.

Third, an automotive control device consisting of a control device and a hot-wire air flow meter housed in the same case is removably attached to a part of the air cleaner body, and the control device and/or
Alternatively, when a hot wire air flow meter breaks down, the control device can be replaced efficiently and easily, thereby improving the maintenance efficiency of the control device and the hot wire air flow meter.

Fourthly, the air cleaner element and the hot wire air flowmeter are integrated or integrated into an integrated structure, the structure of the upstream part of the air flow path is fixed, and the influence of the upstream part of the air system on the hot wire is reduced. This reduces the measurement error of type air flowmeters.

[Function] The heat dissipation plate of the heat-generating electronic component arranged on the circuit board of the automobile control device is disposed within the air cleaner intake air passage through which outside air flows, or at a location in contact with the intake air passage, so that the heat dissipation is The cooling effect of the plate is increased.

Electrical connections between the control device and each component of the hot-wire air flow meter are made directly using nickel wire, aluminum wire bonding, or equivalent means, without using a harness or the like. Compared to conventional devices that use harnesses of 1 m to 2 m, the impedance of the connection can be lowered, and resistance to radio wave interference and noise is improved.

The automotive control device, which consists of a control device and a hot-wire air flow meter housed in a case, is removably attached to the upper side of the air cleaner body, making it possible to efficiently and easily replace the control device. This improves the maintenance efficiency of control devices and hot wire air flow meters.

Since the air cleaner element, hot wire air flow meter, and control device are integrated or incorporated into an integrated structure, the structure of the upstream part of the air system is fixed, and the hot wire is no longer affected by the upstream air system. The measurement error of hot wire air flow meters is reduced.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a first embodiment of an automobile control device in which a control device and a hot wire air flow meter are integrally formed in a waterproof air cleaner body.

In the figure, ■ is an automotive control device, 2 is an air cleaner body, 3.5 is a circuit board, 4 is a waterproof connector,
6 is a heat sink, 7 is a heat wire, 8 is an intake air passage, 9 is an air cleaner element, 10.15.16 is a gasket,
11 is an intake duct, 12 is a mounting screw, 13 is a nickel wire, and 14 is a case.

The air cleaner body 2 has an air passage opening C in the upper part, and the intake duct 11 has a gasket 16 in the lower end.
It is attached with screws 12 through the air cleaner element 9, and an air cleaner element 9 is inserted and installed in the lower part. Intake duct]
1 is attached to the air cleaner body 2 at its upper end, and has an air passage opening d at its lower end. Also,
The air cleaner body 2 has an air passage opening C at the top.
The air cleaner body 2 has a shelf portion projecting to the side, and openings flftla, b are provided in the side surface of the air cleaner body 2 above the shelf portion. A waterproof connector 4 is fitted into the opening a through a packing 15, and a hot wire 7 is attached to the opening.

Two circuit boards 3.5, waterproof connector 4, heat sink 6,
The device part including the hot wire 7 constitutes an automobile control device l,
The control device 1 is housed in a case 14 that covers the air cleaner body 2.

This case 14 is fitted into the upper opening of the air cleaner body 2 via the packing 10, and forms a lid for the opening.

On one circuit board 3, electronic components, semiconductors, etc. that generate relatively little or no heat are mounted and arranged on the top and bottom thereof,
They are electrically connected by Tanada et al. This circuit board 3 is placed and attached to the shelf portion of the air cleaner body 2. Further, on the other circuit board 5, electronic components and the like that generate a large amount of heat are mounted and arranged, and these are electrically connected by soldering or the like. A heat radiating plate 6 is attached to the lower part of the circuit board 5 with adhesive or the like, and the heat radiating plate 6 is arranged to protrude into the intake air passage 8 so as to come into contact with the air flowing through the intake air passage 8 of the air cleaner.

The sub-circuit board 3.5 is electrically connected by nickel wires 13 to the hot wire 7 of the hot wire air flowmeter and the control device l.
Similarly, electrical connection is made to the other circuit board 5 using nickel wires 13. Note that this connection is not limited to nickel wires, and equivalent means such as aluminum wire bonding may be used.

In the above configuration, in this embodiment, electronic components that generate less heat are mounted on the circuit board 3, and electronic components that generate more heat are mounted on the circuit board 5, and then attached to the circuit board 5. Heat dissipation plate 6 for electronic components that generate a large amount of heat
Since it protrudes into the intake air passage 8, it is possible to enhance the cooling effect on electronic components that generate a large amount of heat. In addition, since the hot wire 7 of the hot wire air flow meter is directly connected to the circuit board 5 of the automobile control device 1 with a nickel wire or the like without using a harness or the like, the connection part should be made to have low impedance. It is possible to improve resistance to radio interference and noise. Furthermore, since the air cleaner element 9 and the hot wire 7 are integrally attached to the air cleaner body 2, and the structure of the upstream side of the air system of the hot wire type air flowmeter is fixed, the hot wire 7 has an effect on the upstream side of the air system. You will no longer receive it.

FIG. 2 shows a second embodiment which is a partial modification of the first embodiment.

In this example, the same components as those in the first example are given the same reference numerals, and overlapping parts will be omitted in the description of the configuration, etc.

In the figure, 17 is a heat sink, 18 is a circuit board, and 19 is an air cleaner body.

In this example, a single circuit board 18 is provided in place of the one and the other circuit boards 3.5 in the first embodiment, and a heat sink 17 is arranged on the side of the circuit board 18. The tip protrudes into the intake air passage 8. In this case, the circuit board 18 is formed of, for example, a highly heat-resistant organic substrate, and a discrete full mold type power transistor or the like is mounted on the circuit board 18.

In this example, as in the first example, the tip of the heat sink 17 protrudes into the intake air passage 8, so that the cooling effect can be enhanced. Furthermore, since the remaining effects are the same as those of the first embodiment, their explanation will be omitted.

FIG. 3 shows a third embodiment which is also a partially modified version of the first embodiment.

In this example as well, the same components as those in the first example are denoted by the same reference numerals, and overlapping parts will be omitted in the description of the configuration, etc.

In the figure, 20 is an air cleaner body, 21 is a base, 22 is a case, 23 is a heat sink, and 24 is a gasket.

In this example, a holding part is formed on the upper side of the air cleaner body 20 by an upper surface corresponding to the shelf part and a protruding part protruding from the side wall of the air passage opening C, and the base 2I and the case 22 are stored in this holding part. Automotive control equipment is removably installed. The case 21 has openings a and b.
A waterproof connector 4 is fitted into the opening a, and a hot wire 7 is attached to the opening. Furthermore, the case 22 is attached to the base 21 via the packing 10.

When attaching the automotive control device l housed in the base 21 and case 22, the control device 1 is fitted into the holding portion provided on the upper side of the air cleaner body 20, and fixed to the corresponding portion by appropriate means. do. Moreover, when removing the control device 1, the fixing means may be removed and the control device 1 may be pulled out from the holding portion.

In this example, the heat sink 23 is arranged on the base 22 and is not exposed to the intake air passage 8. A sufficient heat dissipation effect can be achieved simply by arranging the above on the base 22.

This example employs a structure in which an automobile control device is removably attached to the air cleaner body 20, so that it has the effect of improving the effectiveness of maintenance in case of breakdowns, etc. Further, the remaining effects of this example are the same as those of the first example, so their explanation will be omitted.

FIG. 4 shows a fourth embodiment, which is a partial modification of the second embodiment.

In this example as well, the same components as in the second example are denoted by the same reference numerals, and overlapping parts will be omitted in the description of the configuration, etc.

In the figure, 25 is a base, and 26 is a heat sink.

In this example, similarly to the third embodiment, the automobile control equipment l housed in the base 25 and the case 22 is connected to the upper surface of the air cleaner body 20, which corresponds to the upper side of the shelf, and the air passage opening C. It is removably attached within a holding part formed by a protruding part protruding from the side wall of.

Similar to the third embodiment, the heat sink 26 is arranged on the side of the circuit board 18 and has a structure in which it is not exposed to the intake air passage 8.

This example is the same as the third example in that it has the effect of improving the maintenance effect against failures, etc., and the other effects are the same as the second example, so a description thereof will be omitted.

FIG. 5 shows a fifth embodiment, which is a partial modification of the first and third embodiments.

In this example as well, the same components as those in the first and third embodiments are denoted by the same reference numerals, and overlapping parts will be omitted in the description of the configuration, etc.

In the figure, 30 is a case, 31 is a base, 32 is an air cleaner body, 33 is an air cleaner element, 34, 35, 37 is a packing, and 36 is an intake duct.

In this example, the air passage opening C of the air cleaner body 32 is provided in the lateral direction, and within a holding part formed by the upper surface of the air cleaner body 32 and a protrusion protruding from the side wall of the air passage opening C. The structure is such that an automobile control device l housed in a base 31 and a case 30 is detachably attached. A heating wire 7 is attached to the base 31, and a heat sink 6 is exposed through an opening provided on the bottom surface of the base 31.

When installing the control device 1, when the control device 1 is lowered along the protrusion, the heat wire 7 and the heat sink 6 are removed.
are inserted into the openings e provided on the upper surface of the air cleaner body 32, respectively, and when the control device l is fixed to the air cleaner body 32 by appropriate means, the heat wire 7 and the heat sink 6 are inserted into the gasket 24. .35 and is sealed and fixed to the air cleaner body 32.

The effects of this example are the same as those of the first and third embodiments, so the explanation thereof will be omitted.

FIG. 6 shows a sixth embodiment, which is a partial modification of the second and fourth embodiments.

In this example as well, the same components as those in the second and fourth embodiments are denoted by the same reference numerals, and overlapping parts will be omitted in the description of the configuration, etc.

In the figure, 40 is a base, 41 is an air cleaner body, 42 is a heat sink, and 43 is a gasket.

In this example, as in the fifth embodiment, the air passage opening C of the air cleaner body 41 is provided in the lateral direction, and the upper surface of the air cleaner body 41 and the protrusion protruding from the side wall of the air passage opening C are The base 4 is inside the holding part formed by the base 4.
0 and an automobile control device l housed in a case 30 are detachably attached. Then, the hot wire 7 is attached to the base 31, and the single circuit board 18
The lower part of the heat sink 42 disposed on the side of the base 31 is exposed through an opening provided in the bottom surface of the base 31.

Also in this example, the control device 1 is the air cleaner body 41.
When the control device 1 is attached to the air cleaner body 41,
The heating wires 7 and the heat dissipating plate 42 are inserted into openings e provided on the upper surface of the air cleaner body 41, respectively, and when the control device 1 is fixed to the air cleaner body 32 by appropriate means, the heating wires 7 and The heat sink 42 is sealed and fixed to the air cleaner body 32 via gaskets 24 and 43.

The effects of this example are similar to those of the second and fourth embodiments, so the explanation thereof will be omitted.

FIG. 7 shows a seventh embodiment, which is a partial modification of the sixth embodiment.

In this example as well, the same components as those in the sixth embodiment are denoted by the same reference numerals, and overlapping parts will be omitted in the description of the configuration, etc.

In the figure, 50 is a base, 51 is a case, 52 is an air cleaner body, 53 is a gasket, and 54 is a circuit board.

Similarly to the sixth embodiment, in this example, 52 air passage openings C are provided in the horizontal direction, and are formed by the upper surface of the air cleaner body 52 and a protrusion protruding from the side wall of the air passage opening C. The vehicle control device 1 housed in a base 50 and a case 51 is removably attached to the holding portion. The heating wire 7 is attached near the center of the base 50, and the lower part of the heat sink 42 arranged on the side of the single circuit board 18 is exposed through an opening provided in the bottom surface near the end of the base 50. ing.

In this example, the control device 1 is the air cleaner body 50.
It has a structure in which it is detachably attached to the air cleaner body 50, and when attaching the control device l to the air cleaner body 50,
The heating wire 7 and the heat dissipation plate 42 are inserted into the openings (e) provided on the upper surface of the air cleaner body 41, respectively, and when the control device 1 is fixed to the air cleaner body 52 by appropriate means, the heating wires 7 and The heat sink 42 is sealed and fixed to the air cleaner body 32 via gaskets 24 and 43.

In this example, the heat radiating plate 42 is arranged at the rear of the location of the hot wire 7 in the intake air passage, so the air heated by touching the heat radiating plate 42 can be prevented from hitting the hot wire 7, and the hot wire air This has the effect of reducing the influence of flowmeters, air temperature correction circuits, etc. Further, the remaining effects are similar to those of the sixth embodiment, and their explanation will be omitted.

FIG. 8 is a structural diagram showing possible mounting positions of the automobile control device 1 according to the present invention.

In the figure, 60 is an engine room, 61 is a fuse box, 62 is an intake manifold, 63 is a throttle chamber, 64 is an engine, 65 is a shock absorber, 166 is a battery, and 67 is a harness.

In the engine room 60 of an automobile, there are four possible locations, A, B, C, and D, where the control device 1 can be installed when only temperature and environmental conditions are considered. However, the target control device 1 of the present invention has to be disposed integrally with the air cleaner body at a location facing the intake air passage, or the temperature conditions of many of the electronic components used, including the microcomputer, are more appropriate. Considering that it must be, it is appropriate to place it in parts A and D among the four parts described in n1j.

[Effects of the Invention] As described above, according to the present invention, an automobile control device l is provided with a heat sink for heat-generating electronic components in the air cleaner intake air passage through which outside air flows or in the intake air passage. Since they are arranged adjacent to each other, the cooling effect on the electronic component can be increased.

The present invention also provides a control device and a hot wire air flow meter.

Specifically, the electrical connection between the circuit boards or between the hot wire and the circuit board is made directly using nickel wire, aluminum bonding, etc., without using a harness or the like, which eliminates the need for expensive harnesses. In addition, the impedance of the connection portion can be lowered to improve resistance to radio wave interference and noise.

Furthermore, the present invention allows the automobile control device 1 consisting of a control device and a θ hot-wire air flow meter to be detachably attached to the upper side of an air cleaner body. maintenance efficiency can be improved.

In addition, in the present invention, the air cleaner element and the automobile control device 1 are integrated into the air cleaner body, or are integrated into the air cleaner body, so that the structure of the upstream portion of the intake air passage is fixed. The hot wire air flow meter is less affected by the upstream part of the air system.

[Brief explanation of the drawing]

FIG. 1 is a structural diagram showing a second embodiment of the present invention, FIG. 2 is a structural diagram showing a second embodiment of the present invention, and FIG. 3 is a structural diagram showing a third embodiment of the present invention. , FIG. 4 is a structural diagram showing a fourth embodiment of the present invention, FIG. 5 is a structural diagram showing a fifth embodiment of the present invention, and FIG. 6 is a structural diagram showing a sixth embodiment of the present invention. 5 and 7 are structural diagrams showing a seventh embodiment of the present invention, and FIG. 8 is a structural diagram showing the mounting position of the automobile control device of the present invention. 1... Automotive control equipment, 2.19.20,
32.41.52... Air cleaner body, 3.5.18.54... Circuit board, 4.
・ ...Waterproof connector, 6.17.23.26.4
2... Heat sink, 7... Heat wire, 8... Intake air passage, 9.33... Air cleaner element, 10.15.16.24.34.35.37
．． 43.53... Patsukin, 11.36...
・Intake duct, 12... Screw, 13...
...Nickel wire, 14.22.3o, 51...
...-Case, 21.25.31.40.50...
・Base, 60... Engine room, 61
... Fuse box, 62... Intake manifold, 63... Throttle chamber, 64... Engine, 65...
Shock absorber-566...Battery. Figure 1 aJ! =INJtf91N for own WJIji! -69: L
? -ri! /-7-IW>)2: Air-Cree-1-Pol
IO = Patsukin 3: ω 舒layer 1 crossing l1
= 9 Yanjiri “Site 4: Introduction to water visit 9 12: Pheasant 5: Russian 11 removed 13: Nickel wire 16: Heat radiation, board I4: Case 7: Snake, #15
: Packing 8: Shuninichichi 9ze W 16: Punkin 2nd figure 17 2 ga' (handling 18: mouth-to-mouth dealing 19: near creeker 2nd day figure 3 (d) 20: Air Cleaner body 2/:' (-su 22 2K Mata 23: Mosquito Il!!, Mayuzumi 24:) (Tsukin 4th figure 25: He-su 26: change, Enoki 5th figure +d) 30: Case 34: 1 gu・nkin 3
1: Baize 35: Packing 32: Air creep-bottom 36 double width 2tr7°' ct 33: Air creep element 37, Burnkin Figure 6 a7 40:~゛-su 4I: Air creep 42: π1 section plate 43: Patsukin Figure 7 (d) 50: He°'-su 51: σ-Also 52: Near creep - 1-cho' Day 53: Patsukin 54: Mouth bulge

Claims (1)

[Claims] 1. An automobile control device including a circuit board mounted with semiconductor electronic components and comprising a control device and a hot-wire air flow meter, in which the control device and the hot-wire air flow meter are mounted on an air cleaner body. An automotive control device characterized by being integrally installed. 2. A control device for an automobile, characterized in that the control device according to claim 1 and a hot wire air flow meter are housed in the same case, and the case is detachably attached to a part of an air cleaner body. 3. Two circuit boards according to claim 1 are provided, a heat generating electronic component is mounted on one circuit board, a non-heat generating electronic component is mounted on the other circuit board, and a heat sink is provided for the heat generating electronic component on one circuit board. A control device for an automobile, characterized in that it is arranged in an air cleaner intake air passage. 4. The control device according to claim 1 or 2 and each component of the hot-wire air flowmeter are arranged close to each other, and the electrical connection between the components except for the connection between the components on the same circuit board is achieved. An automobile control device characterized in that connection is made by nickel wire, wire bonding, or an equivalent means.