JPS63198777A - Starting and charging device for engine - Google Patents

Abstract

PURPOSE:To suppress the temperature rise of an armature winding by coupling an armature core and a field core with a bracket fixed to an engine block and arranging a heat pipe ranging between the armature core and an engine cooling liquid circulation passage on this bracket. CONSTITUTION:A starting and charging device main body 1 is constituted of a pair of rotary field poles 2a, 2b integrally connected via a nonmagnetic ring 7, a field winding 3 fitted to a field core 11, an armature core 4, and an armature winding 5. In this case, a bracket 34 is fixed to an engine block 31 having a cooling liquid circulation passage 32, and the cores 4, 11 are coupled with this bracket 34. One end of a heat pipe 36 is arranged on this bracket 34 at several positions on the periphery near the armature core 4, the other end of the heat pipe 36 is inserted into the cooling liquid circulation passage 32, and the heat of the armature winding 5 is absorbed by the engine cooling water via the heat pipe 36.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an engine starting and charging device that can effectively cool an armature winding. Kosho 61. , -54949, and is a sectional view of a conventional engine starting/charging device shown in FIG.
b, field winding 3, armature iron 2/1) 4, armature winding 5,
Crank angle detector 6'jt''+: configured as a raw material.

A pair of rotating field magnetic poles 2a and 2b are made of a ferromagnetic material, and are made of a non-magnetic material i) :=Guar so that their magnetic pole parts are alternately located in the circumferential direction. They are integrally combined into a huff.

The 11-turn field arsenic pole 2a also serves as a flywheel, and is fitted (8) to the crankshaft 8 of the engine, and is firmly attached to the shaft end of the crankshaft 8 with a bolt 9.

A notch 10 is formed on the side of the rotating field pole 2a, which is used in conjunction with the crank angle detector 6 to detect the crank angle. This notch 10 is the rotating field pole 2
The same number as a is provided at equal intervals on the circumference.

The width of the notch 10 in the circumferential direction is approximately half the ratio of the number of notches in 360 degrees.

The rotating field [2a, 2b is configured to be excited by the field winding NA3. This field winding 3 is connected to the field core 11
is attached to.

This rotating magnetic core 11 is fixed to the rear plate 12 by a bolt (not shown), and faces the rotating magnetic pole 2a in the axial direction with a slight gap a therebetween, and is opposed to the rotating magnetic field pole 2b with a slight gap a therebetween. They are facing each other through.

Although the field winding 3 is provided on the fixed side and the current collection ring is omitted,
Since the current flowing in the field winding 3 is much smaller than the current in the electric machine prewinding [5], the current can also be passed through the current collecting ring and the brush.

The armature core 4 is made of laminated silicon steel plates, and has a number of grooves in its inner periphery in which the armature windings 5 are accommodated.

The armature winding 5 is a three-phase distributed winding like a normal commutatorless motor.

The armature core 4 is fitted into the fixed frame 13, aligned with the fixed frame 13 by a key (not shown), and prevented from rotating. At this time, the armature core 4 is fixed to the fixed frame 13 in the axial direction by the spacer 14 via the spring puffer tube 1S.

Furthermore, the fixed frame 13 is attached to the rear plate 12 of the Zelt 1G. The rear plate 12 is attached to an engine body (not shown).

On the other hand, the crank angle detector 6 serves as a signal source for operating an armature current switching circuit (not shown), and here a transmitting type proximity switch is used.

This proximity switch is provided with a notch 10 in the rotating field pole 2a, and is attached to the rear plate 12 so that the detection pair faces each other on the nine circumference line. The oscillation conditions change due to the inductance change in the section, and a binary signal of "1" or rOJ corresponding to the crank angle (field pole position) is output. When the armature winding 5 has three phases, the crank angle detector 6 has three phases.
are installed.

The clutch 17 connects and disconnects power transmission between the crankshaft 8 and the transmission drive shaft 18, and this clutch 17 is connected to a clutch disc 19, a pressure plate 20,
．． A diaphragm spring clutch consisting of a diaphragm spring (disc spring) 21, wiring 22, 23, and a clutch cover 24 is used.

The clutch cover 24 is attached to the rotary field pole 2a, which also serves as a flywheel, by a selt 25.

Next, the operation at startup will be explained. When the key switch (not shown) is set to the start position while the engine is running, 'llt current flows from the battery (not shown) to the field winding 3 and armature winding 5, thereby increasing the rotating field. magnetic pole 2
Torque is generated at a and 2b, which rotates the crankshaft 8 that is directly connected to them.

When the rotating field pole starts to rotate, the crank angle detector 6 detects the rotating field pole position and switches the armature current so that the speed of the rotating magnetic field created by the armature winding 5 becomes the same as the rotation speed of the rotating field pole. Activate the circuit (not shown) and rotate the field pole 2”
s2b obtains torque and further accelerates.

Since a strong starting torque can be obtained by such a positive feedback effect, the engine fe can be started in a short time by direct drive.

Next, after starting the engine, when the key switch is placed in the ignition position, the starting/charging device 1 operates as an alternating current generator, and the generated power is converted to direct current by a diode (not shown) and is then used to power the battery and the vehicle. Supplies electrical equipment inside.

As is well known, when the clutch pedal (not shown) is not depressed, the tension of the diamond slam spring 21 is applied to the clutch disc 19 via the pressure plate 20f by lever action. , the clutch disk 19 mounted on the transmission drive shaft 18 is pressed against the side surface of the rotating field pole 2a to bring the clutch F into the connected state.

Further, when the clutch pedal is depressed, a sleeve (not shown) slides in the axial direction and presses the center portion of the diaphragm spring 21 in the direction of arrow C, and this diaphragm spring 21 is moved by the wiring ring 22, 23'! It is reversed as the i-fulcrum, the pressure applied to the clutch disc 19 is released, the clutch 17 is in a disconnected state, and the power transmission between the link shaft 8 and the transmission drive shaft 18 is cut off.

In this way, the rotating field pole 2a of the main body of the starting/light gL device is directly connected to the crankshaft of the engine, and furthermore, this rotating field pole 2a
The starting/charging device main body 1 and the clutch 17 are integrated by using the a as a carrier for the clutch 17 that connects and disconnects between the crankshaft 8 and the speed change a groove layer driving shaft 18.

[Problem that the invention seeks to solve]

In the conventional machine starting dynamic charging device described above, the entire device is hermetically sealed, and a large current flows through the armature winding 5 and the field winding I! The ambient temperature in the sealed room becomes extremely high due to resistance loss heat generated from the current flowing through the capacitor 3.

However, it is not equipped with a cooling means such as a cooling fan, and is so-called natural cooling. Friend, even if a cooling means is installed, the cooling effect is low in a closed room, so the temperature of each part will rise significantly, leading to a decrease in quality in terms of heat resistance, and in terms of performance, the field winding There is a problem that the current of 3 decreases and the desired starting torque and good output current cannot be obtained.

Also, this type of conventional equipment was directly connected to the engine;
This directly affected the temperature rise of the engine, which accelerated the deterioration of the operating characteristics mentioned above.

The present invention has been made to solve these problems, and an object of the present invention is to provide an engine starting/charging device that can completely suppress the temperature rise of the armature winding and improve the operating characteristics of the device.

[Means for solving problems]

The engine starting and charging device according to the present invention includes a bracket in which an armature core and a field core are fitted together, and an engine coolant circulation system path in the vicinity of the armature core or between the armature core and the engine block in this bracket. The heat pipe placed between the two is carefully set up.

[For production]

In this invention, heat generated by the armature winding is transmitted from the tm iron core to the heat pipe, and is radiated to the coolant circulating in the coolant circulation system of the engine via the heat pipe.

[Embodiments] Hereinafter, embodiments of the engine starting and charging device of the present invention will be described based on the drawings. FIG. 1 is a sectional view showing the configuration of one embodiment. In this Fig. 1, the same parts as in Fig. 2 are given the same reference numerals to avoid duplicate explanation.
We will mainly discuss the parts that are different from Figure 2.

This FIG. 1 is similar to the configuration of FIG. 2 with the following new parts added. That is, 31 is an engine block. This engine block 31 has an engine coolant circulation path 32 formed therein. This coolant circulation path 32 communicates with a radiator (not shown).

A bracket 34 is fixed to the engine block 31 by a bolt 35 via a sealing gasket 33. The bracket 34 is made of a material with good thermal conductivity, such as aluminum.

The military armature core 4 and the field core 11 are attached to this bracket 34.
are fitted. In the bracket 34, one end of a heat pipe 36 is disposed at several locations around the entire circumference near the armature core 4. The other end of this heat pipe 36 passes through the engine block 31 and connects to the engine coolant circulation path 32.
inserted inside.

A fin 37 is provided on the outer peripheral surface of the other end of the heat pipe 36.
A plurality of are provided to enhance the heat dissipation effect. The other end of the heat pipe 36 and the fins 36 are immersed in the coolant in the coolant circulation path 32 of the engine, and the heat generated from the armature winding 5 is transferred to the coolant via the armature core 4. Heat is dissipated into this coolant.

Water and alcohol are contained in the heat pipe 36.

A working fluid with evaporative properties such as ammonia is sealed. This heat pipe 3G exchanges heat through the well-known evaporation and condensation cycle of the working fluid sealed inside, and can effectively prevent the temperature of the armature core 4 from rising.

Further, in the engine block 31, an inlet 38 is formed which communicates with the coolant circulation system path 32 of the engine, and the field core 11 has a
A field core side cooling passage 39 is formed. This field core side cooling passage 39 is arranged near the ii winding 3, into which the coolant on the outgoing side of the engine coolant circulation system path 32 flows through the inflow port 38, and further into the engine coolant circulation system path 39. The coolant is returned to the return side of :32.

One end of a heat pipe 40 is also arranged in this field core side coolant passage 39 and inlet 38, and the other end of this heat pipe 40 is connected to the field core 11 near the field winding 3 of the field core 11. They are placed at several locations around the entire circumference so as not to obstruct the magnetic path.

This heat pipe 40 is similar to the heat pipe 36 described above, and a plurality of fins 41 are also provided on the outer circumferential surface of the one end, the constrictor, the inlet 38, and the field core side coolant passage 39 side.

Next, the operation of this embodiment will be explained. The engine starting, charging, and clutch operation are as described in Figure 2, so their explanation is omitted here, and the armature core 4,
The cooling effect of the field core 11 will now be described.

c) Coolant filled in the engine coolant circulation path 32 that connects the eta and the engine block 31. The coolant flows through the field core side coolant passage 39 through the inlet 38 and returns to the return side of the coolant circulation system line 32 of the engine.

During the flow of the coolant, heat generated from the field winding 3 passes through the field core 11 and is absorbed by the coolant.

At the same time, the heat of the field core 11 is transferred to the field core side coolant passage 41 by the heat pipe 40, and the heat is absorbed by the coolant, and at the same time, heat is exchanged by the evaporation and condensation cycle of the heat pipe. Cool. This results in
Field core side coolant passage wj! The rise in temperature of the field core 11 can be effectively prevented at the same time as the r41 coolant.

10,000, 'TILyThe heat generated from the child coil 5 is transmitted to the heat pipe 36 via the armature core 4, and the heat passing through this heat pipe 36 is absorbed by the coolant in the engine coolant circulation path 32. At the same time, heat exchange is performed in the evaporation and condensation cycle of the working fluid in the heat pipe 36 to perform cooling.

Note that in the above Tenkawa (;l), the 5 heat pipe 36 is installed on the bracket 34 near the armature core 4 as an example, but this heat pipe 36fr is installed directly on the armature core 4. It is preferable to install it in a place where it does not affect the magnetic ascending path, for example, at the tip of the iron core.

First, the heat pipe 40 on the field core 11 side is connected to the field winding 3.
Since the amount of heat generated by the armature winding 50 is smaller than that of the armature winding 50, it is not necessarily necessary to provide it.

〔Effect of the invention〕

As explained above, this invention cools the armature winding by providing a heat pipe in the bracket near the armature core or in the armature core, so that the temperature rise of the armature coil can be completely suppressed and the equipment can be improved. Operation performance can be improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an embodiment of the engine starting and charging device of the present invention, and FIG. 2 is a sectional view of a conventional engine starting charging device. DESCRIPTION OF SYMBOLS 1... Main body of starting/charging device, 2a, 2b... Rotating field pole, 3... Field winding, 4... Armature core, 5...
・'! IT Isogo winding, 6... Crank angle detector, 8
... Crankshaft, 10 ... Notch, 17 ... Clutch, 31 ... Engine block, 32 ... Engine coolant circulation path, 34 ... Bracket l-, 36,
40...Heat pipe. Note that the same reference numerals in the figures indicate the same or equivalent parts. Agent Masuo Oiwa Diagram 2 procedural amendment (voluntary) r31211 Showa year, - Mr. Himachi, Director General of the Agency, ゛2.
-1, Indication of the incident, Patent Application No. 62-300202,
Name of the invention: Engine starting and charging device 3, person making the correction Representative: Mamoru Shiki (inside Mitsubishi Electric Corporation) Name (7375) Patent attorney Masashii Oiwa -7-4 (contact information: 0
3(2], 3) 3421 Patent Department) , :゛, 1---<. -), --/ 5. Each column 6 of the scope of claims and detailed description of the invention in the specification subject to amendment, contents of the amendment il+ We will make numerous corrections to the description of the scope of claims of the patent application in the attached sheet. +21 In this application, the description in the specification has been corrected as follows1. 7 List of Attached Documents fil Amended Patent Claims 1 or more copies 2 Claims A rotating field pole attached to the crankshaft of an engine, and a field magnet that excites this rotating field pole and is wound around a field iron core. The field winding and the armature winding are energized by electricity from the battery when the engine is started. The rotating field pole generates torque and rotates the crankshaft to start the engine, and after the engine starts, it operates as a generator to photoelectrically charge the battery, the main body of the starting/charging device, and the cooling and circulation system for the engine. an engine block having a passageway, a bracket to which the armature core and the field core are fitted and attached to the engine block; An engine starting/charging device comprising a heat inlet connected to a coolant circulation path.

Claims (1)

[Claims] A rotating field pole attached to the engine crankshaft, a field winding that excites this rotating field pole and is wound around a field core, an armature core, an armature winding that is wrapped around this, and crank angle detection. When starting the engine, the field winding and armature winding are excited by electricity from the battery, and the rotating field pole generates torque to rotate the crankshaft and start the engine. and a starting/charging device main body that operates as a generator to charge the battery after the engine is started, an engine block having a coolant circulation path for the engine, and the engine block into which the armature core and field core are fitted. A bracket attached to the engine, and a heat pipe installed in the bracket near the armature winding of the armature core or connected to the armature core and the coolant circulation path of the engine. Device.