JPS60128861A - Energy regenerative clutch device - Google Patents

Abstract

PURPOSE:To improve the utility efficiency of the output of an engine by producing electric energy by utilizing the relative slip between a drive unit and a driven unit of a clutch and supplementing the energy loss due to frictional heat. CONSTITUTION:A relative rotation amount between the output shaft 1a of an engine and the input shaft 4a of a transmission is converted into electric energy by a generator 2 having a pair of a stator 3 and a rotor 5, and produced in a zone of differential range for producing a relative slip between a driving unit A and a driven unit B of a clutch. Since a battery 14 is charged by this energy, the utility efficiency of the output of the engine is improved to reduce the consumption of the energy.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an energy regeneration type clutch device.As shown in FIG.
・One that transmits the output of the engine ll11G to the transmission TM through the flute coupling ・0 as shown in FIG. 2, FIG. 3 As shown in the figure, there is a system in which the output of the engine W/G is transmitted to the transmission 'I'-M via a torque converter T/0.

However, in the configuration of the power transmission system shown in Figures 1 and 2, there is a differential region (section T in Figure 4) from the start until the speed ratio between the engine output shaft and the transmission input shaft becomes 1. ), there is a relative slip between the driving part and the driven part of the clutch, so that part of the output of the engine III-G becomes frictional heat and is wasted.

In addition, in the case of the configuration example shown in Fig. 3, a part of the energy accompanying relative slip is converted into torque, but most of the remaining energy is lost as heat, and the same applies in this case. Therefore, part of the output of engine III-G is wasted.

In the case of automobiles to which this type of power transmission system is applied, the above-mentioned differential region mainly corresponds to the time of starting, so
Every time the vehicle starts repeatedly, the energy loss due to the frictional heat in the clutch accumulates, resulting in a loss that cannot be ignored from the perspective of energy efficiency.

On the other hand, in cars, etc., in order to secure power for the engine starting system, ignition system, and other car accessories, a portion of the kinetic energy during driving is converted into electrical energy using an alternator, which is then charged to the battery. A configuration has been adopted to do so.

Therefore, the amount of relative rotation between the engine output shaft (rotational speed N,) and the transmission input shaft (rotational speed NM) occurring in the aforementioned differential region indicated by T in FIG. 4 is converted into electrical energy. By charging the battery, it is possible to improve the utilization efficiency of the engine output.

This invention was made from the above viewpoint, and utilizes the relative slip between the driving and driven parts of the clutch to extract electrical energy, thereby compensating for the energy loss due to frictional heat during the relative slip. However, it is an object of the present invention to provide an energy regeneration type clutch device which is designed to improve the utilization efficiency of engine output.

An embodiment of the present invention will be described below based on FIGS. 5 and 6.

The energy regeneration type clutch device of this embodiment is applied to a mechanical clutch, and as shown in a schematic diagram in FIG.
The stator 3 of the generator 2 is provided on the side of the clutch drive part A that is directly connected to the transmission 40, while the stator 5 of the generator 2 is provided on the side of the driven part B of the Clara 1ch that is directly connected to the input shaft 4a of the transmission 40. In a region where relative slip occurs between the clutch driving part A and the driven part B, the generator 2 consisting of the pair of the stator 3 and the rotor 5 generates a relative rotation between the engine output shaft 1a and the transmission input shaft 4a 5-. It converts the amount into electrical energy and extracts it.

The clutch cover 6 is connected to the output shaft 1 & of the engine 1 via the housing 7 of the generator 2, and the stator 3 is fixed to the frame portion 7a of the housing 7, and the transmission side bracket portion 7b of the housing 7 is connected to the clutch cover 6. This is used as a sliding contact portion of the disk 8. On the other hand, the transmission input shaft 41L is inserted into the housing 7, and the rotor 5 is fixed to a shaft region of the input shaft 4a corresponding to the stator 3.

Of the transmission input shaft 4a, the shaft castle covered with the clutch cover 6 has the following parts, like a normal dry clutch.
The clutch disc 8 is fixedly installed, and the clutch disc 8 is connected to and disconnected from the bracket part 7b of the housing 7 through the release bearing 10, the diaphragm spring 11, and the pressure plate 12 by the swinging of the yaw 9. ing.

Therefore, the clutch drive unit A includes the pressure plate 12, the diaphragm spring 11, and the clutch cover 6.
, a housing 7, and a stator 3. On the other hand, the clutch driven part B is composed of a clutch disk 8, a rotor 5, etc., and the housing 7 of the generator 2 functions as a flywheel.

In the power transmission system shown in FIG. 5, the output voltage V taken out by the generator 2 is rectified into a DC voltage by the converter 13, and this is charged to the battery 14, while the level of the output voltage V of the generator 2 is is determined by another determination circuit 15, and when this output voltage V decreases to a predetermined level (for example, 0), that is, the rotation M of the transmission input shaft 4a that rotates following the engine output shaft 1& due to the power generation action, When the rotation speed reaches a point where the rotation speed exceeds the stall rotation of the engine 1, for example, the valve 17 of the hydraulic system is opened and the pump 18 supplies oil to the hydraulic cylinder 19, so that the yoke 9 It is arranged to move toward the rotation side that connects the drive parts B together.

In the generator 2 in this case, the clutch drive unit A side to which the stator 3 is fixed rotates, so in order to extract the output voltage from the generator 2, it is necessary to adopt a configuration as shown in FIG. 6, for example. .

In FIG. 6, 20121 is a slip ring provided on the engine output shaft la side, and these and stator coil 22
．． 23, and the brushes 24.25 arranged outside the generator 2 are connected to the slip rings 20.2, respectively.
1, and the output of the generator 2 is taken into the battery 16 via brushes 24 and 25.

When the engine output shaft 1a rotates in the direction of the arrow mark P1,
Between the stator 3 and the rotor 5, the magnets of the rotor 5 are rotating relative to the stator 3 in the direction P3 opposite to the arrow P1, and the stator 3 side is in the direction of the arrow P1. A rotating magnetic field is generated. This rotating magnetic field generates an electromotive force in the system stator coils 22.23 to generate electricity, and at the same time, a torque is generated in the stator 3 in the direction of arrow P3 due to the current generated in the stator coils 22.23. but,
Since the stator 3 side is rotationally driven by the engine 1 in the opposite direction P1, the magnets of the rotor 5 are rotated in the direction P1 as a reaction to the torque. As a result of the above-described operation, the rotation of the engine 1 is transmitted to the transmission 4, and at the same time, power generation output is extracted from the relative slip between the engine and the transmission 4.

Note that since the output voltage V of the generator 2 becomes 0 when the engine is stopped, the clutch operates to engage at this time as well. The aforementioned discrimination circuit 15 is provided with a function of disengaging the clutch when the engine 1 is started.

In this embodiment, a stator 3 is provided on the clutch drive section A side, a rotor 5 is provided on the clutch driven section B side, and the generator 2
However, it goes without saying that the rotor may be provided on the clutch drive section A side and the stator may be provided on the clutch driven section B side.

According to this invention, one of the stator and the rotor of the generator is provided on the side of the clutch drive section that is directly connected to the engine, and the other of the stator and rotor is provided on the side of the clutch driven section that is directly connected to the transmission. - Electrical energy is extracted by the relative rotational movement between the engine output shaft and transmission input shaft that occurs due to relative slippage between the driven parts, so the following effects can be obtained.

(b) Relative rotational motion in the differential region where relative slip occurs from startup until the speed ratio between the engine output shaft and the transmission input shaft becomes 1 can be converted into electrical energy and charged to the battery, so one engine output can be used. Improved efficiency and reduced energy consumption.

(b) The power generation mechanism can be easily constructed by simply installing a stator and a rotor separately on the driving part side and the driven part side of the clutch, and can be constructed compactly without requiring much installation space.

(c) As in the embodiment, the bracket part 7b of the housing 7 of the generator 2 is used as the sliding contact part of the clutch disc 8, and the pressure plate 12 is made to face this part to perform the lock-up function. Therefore, the slipping function of the generator 2 and the lock-up function can be configured separately, and a reliable latch function can be provided.

[Brief explanation of the drawing]

Figures 1 to 3 are explanatory diagrams showing a power transmission system incorporating a conventional clutch, Figure 4 is an explanatory diagram of a differential region of the power transmission system, and Figure 5 is a schematic diagram showing an embodiment of the present invention. FIG. 6 is a principle diagram showing the wiring of the power generation mechanism section. DESCRIPTION OF SYMBOLS 1... Engine, la... Engine output shaft, 2... Generator, 3... Stator, 4... Transmission, 4a... Transmission input shaft, 5... Rotor, 6... Clutch Cover, 7...Housing, 7
b...Bracket part (sliding part), 8...Clutch disc, 9...Yoke, 1O...Release bearing, 11...Diamond 7 ram spring, 12...Pressure plate, A. °・Clutch drive unit, B...
Clutch driven part Applicant: Daikin Seisakusho Co., Ltd. 13-1r5'f, between the ends of Figures 2 and 3-

Claims (1)

[Claims] One of the stator and rotor of the generator is provided on the side of the clutch drive part that is directly connected to the engine, and the other of the stator and rotor is provided on the side of the clutch driven part that is directly connected to the transmission, so that there is no space between the drive part and the driven part of the clutch. An energy regeneration type clutch device characterized in that electrical energy is extracted by the relative rotational movement between the engine output shaft and the transmission input shaft that occurs due to the opposing gears.