JPS62150029A - Power recovering equipment of engine - Google Patents

Abstract

PURPOSE:To improve recovering efficiency of power, by connecting a planet roller type reducing gear to the output shaft of a turbine driven by exhaust gas, and connecting the output shaft of said reducing gear to the output shaft of an engine through a continuously variable transmission. CONSTITUTION:A turbine 2 is arranged in the exhaust passage 3 of an engine 1 and the output shaft 2a of this turbine 2 is connected to a planet roller type reducing gear, 5. And the output shaft 23 of this reducing gear 5 is connected to a continuously variable transmission 6, and the output shaft 9 of the continuously variable transmission 6 and the output shaft 7 of the engine are connected to each other by means of a gear train 8 consisting of mutually engaging gears 8a, 8b. This reducing gear 5 is so composed that it keeps its revolution while performing autorotation of a planet roller 26 by rotation of an input shaft 21, and the speed of the output shaft 23 is reduced, while, the power is increased through a shaft 25 and a carrier. By the above process, recovering efficiency of the power which keeps high speed rotation of the turbine 2 can be improved and at the same time a noise such as gear noise, etc. can be prevented because the planet roller type reducing gear 5 is employed.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an engine power recovery device that recovers energy from engine exhaust gas and supplies it to the output shaft of the engine.

<Conventional technology> Conventionally, engine exhaust power recovery devices that recover energy from exhaust gas have been used to recover energy from engine exhaust gas. iI
There is a type of engine that increases deceleration and increases power in the engine, which is then returned to the output shaft of the engine.

By the way, the efficiency of the turbine is good at high speed rotation, but the rotation speed of the input shaft of the gear reducer is at most 50゜000r,
It can only be made to about p and m. Therefore, in conventional engine power recovery devices, the turbine is made large in size and the rotational speed of the turbine is reduced to transmit power to the gear reduction gear.

However, if the turbine is made larger and the rotational speed is lowered in this way, there are problems in that power recovery efficiency deteriorates and space is increased. Furthermore, when a gear reducer is used as in the past, there is a problem in that the gears make noise and generate noise. In addition, the rotation speed of the turbine caused by engine exhaust gas varies depending on the rotational status of the engine, so it is difficult to efficiently recover power to the output shaft of the engine with a conventional gear reducer by following the fluctuations in engine rotation. Can not.

Therefore, the purpose of this invention is to miniaturize the turbine in the exhaust passage so that the turbine rotates at high speed to efficiently recover the energy of the exhaust gas, without noise such as gear rattle, and without any noise such as gear noise, and which is resistant to engine rotational fluctuations. To provide a power recovery device for an engine that can track and efficiently recover power.

Means for Solving the Problems> In order to solve the above problems, the engine power recovery device of the present invention includes a turbine provided in the exhaust passage of the engine, and a planetary roller type connected to the output shaft of the turbine. It is characterized by comprising a speed reducer and a continuously variable transmission that connects the output shaft of the planetary roller type speed reducer and the output shaft of the engine.

Effect> The rotational force of the turbine rotationally driven by the exhaust gas is transmitted to the planetary roller type reducer, where it is decelerated and amplified. Since the planetary roller type speed reducer transmits power through planetary motion through the contact of the rollers, decelerating and increasing power, there is no problem even if the high-speed rotational motion of the turbine is directly transmitted to the input shaft of the planetary roller sanctuary machine. Therefore, the turbine can be miniaturized and driven at high speed, and the efficiency of recovering power from exhaust gas is increased. Furthermore, since the planetary roller type speed reducer does not use a ring gear, it does not generate noise such as gear rattling. Since a planetary roller type reducer output is provided between the output shaft of the continuously variable transmission and the output shaft of the engine, the output of the continuously variable transmission is synchronized with the engine output shaft and the turbine rotation speed. The reduction ratio of the transmission is changed, and the energy of the exhaust gas is smoothly recovered to the engine's output shaft.

<Example> Hereinafter, the present invention will be explained in detail with reference to illustrated embodiments.

In FIG. 1, l is an engine, 2 is a turbine provided in the exhaust passage 3 of the engine 1, 5 is a planetary roller type reducer connected to the output shaft 2a of the turbine 2, and 6 is a planetary roller type reducer 5. A continuously variable transmission connected to the output shaft 23, 8 is a gear train consisting of mutually meshing gears 8a and 8b connecting the output shaft 9 of the continuously variable transmission 6 and the output shaft 7 of the engine l, lO is It's a transmission.

The planetary roller type reducer 5 has a structure as shown in FIG.
Place spacers 13, 14, 15, 16 across the
They are fixed to case 11. And input shaft 2
1 is mounted on a spacer 13 on a bearing 22 and rotatably supported, while an output shaft 23 is mounted on a spacer 16 on a bearing 22 so as to be rotatable.
4, it is rotatably supported. A carrier 23a connected to the inner end of the output shaft 23 is provided with a plurality of shafts 25 (only one shaft is shown) at equal intervals on the same circumference. A planetary roller 26 is rotatably fitted into the shaft 25 via a needle bearing 27, and this planetary roller 26 is brought into sliding contact with the inner peripheral surface of the outer ring 12, and the human-powered shaft 26
It is in sliding contact with the outer periphery of 1. Therefore, the rotation of the input shaft 21 is transmitted to the planetary rollers 26, and the planetary rollers 26 rotate while slidingly contacting the inner circumferential surface 12a of the outer ring 12, and transmit the output shaft 23 through the shaft 25 and the gear rear 23a. It decelerates and increases power to rotate. In addition, 31.32
is the oil supply passage.

Further, the continuously variable transmission 6 has a well-known structure, and for example, changes the speed continuously by changing the contact surfaces of the conical rollers.

In the above configuration, the turbine 2 is driven to rotate at high speed by the fluid force of the exhaust gas in the exhaust passage 3.

In the case of this embodiment, since the turbine 2 is made small,
80. Qoor, +), m-100,0OOor, p, m
Rotationally driven. The input shaft 21 of the planetary roller reducer 5 is connected to the output shaft 2a of the turbine 2, which is driven to rotate at high speed in this manner, and the output shaft 23 is driven to reduce speed by the planetary rollers 26, the shaft 25, and the carrier 23a. . This planetary roller type reducer 5 is caused by contact conduction of the roller 26, Q,
Since it is not an interlocking transmission like an FFL car, the human power axis 21
Even if a rotation of 80,000 to 100.00 Or, I), m is transmitted to the motor, the deceleration and force-increasing action can be performed without any problem. Also, since there are no gears, there is no noise such as gear noise.

The driving force reduced by the planetary roller type gear reducer 5 has its reduction ratio adjusted steplessly according to the rotation of the output shaft 7 of the engine 1 by a continuously variable transmission 6, and the output of the engine 1 is transmitted through a single row of teeth 8. It is transmitted to axis 7. In this way, continuously variable transmission 6
Since the speed is changed steplessly in accordance with the rotation of the output shaft 7 of the engine 1, the rotational force of the turbine 2, which varies in rotation depending on the operating state of the engine 1, is smoothly recovered to the output shaft 7 of the engine 1.

<Effects of the Invention> As is clear from the above, the engine power recovery device of the present invention is equipped with a planetary roller type reducer and a continuously variable transmission, so the turbine can be rotated at high speed to improve power recovery efficiency. can be increased. In addition, since a planetary roller type reducer is used, there is no noise such as gear noise, and compared to the case where a planetary gear reducer is used, it does not require gears, so it is easy and inexpensive to process. The entire engine power recovery device ξ can be made inexpensive. In addition, since a continuously variable transmission is provided, the rotational force of the turbine, which varies depending on the operating conditions of the engine, can be smoothly recovered to the output shaft of the Ennon.

[Brief explanation of drawings]

FIG. 1 is a conceptual diagram of an embodiment of the present invention, and FIG. 2 is a sectional view of a planetary roller type reduction gear. l...Engine, 2...Turbine, 5...Planetary roller type reducer, 6...Continuously variable transmission, IO...Transmission.

Claims (1)

[Claims] (1) A turbine provided in the exhaust passage of the engine, a planetary roller type reducer connected to the output shaft of the turbine, and a stepless stepless reducer connecting the output shaft of the planetary roller type reducer and the output shaft of the engine. An engine power recovery device characterized by comprising a transmission.