RU25046U1 - MECHANICAL SUPPRESSOR - Google Patents

Description

The proposed mechanical supercharger can be used, in particular, in an internal combustion engine (ICE).

Currently, in internal combustion engines, air blowers in cylinders are widely used, which provide good cleaning of the cylinders and their filling during the gas exchange process, which contributes to an increase in the internal combustion engine power and their economy.

For the most part, centrifugal compressors are used as the basis for the air blower in the engine. The main differences in the applied and developed blowers are differences in the type of drive of the compressors. By type of drive, the superchargers can be divided into three types: the drive from a gas turbine operating on the exhaust gases of the internal combustion engine itself (the so-called turbochargers or turbochargers); superchargers with a mechanical drive, mainly driven by an engine crankshaft and superchargers with an autonomous drive, in particular, driven by an electric motor.

V-shaped ICEs with turbocharging 1, 2 are known. The disadvantages of such turbochargers are the increased requirement for the material of the turbine wheel and poor gas exchange in the engine cylinders at high engine loads and, accordingly, low revolutions of the compressor wheel, because tzfbin wheel and compressor wheel are mounted on one shaft. At the same time, self-driving superchargers present high demands on the electric motor control system to coordinate the internal combustion engine operating modes and compressor performance.

Cl. F 02 V 33/00

Superchargers with a forced drive from the ICE crankshaft and with an increased angular velocity of the compressor wheels relative to the crankshaft due to the mechanical drive are more preferable. A known supercharger with a mechanical drive 3. A disadvantage of such a drive is that the proposed supercharger uses an expanded gearbox with parallel axes, which leads to large dimensions of the drive (in particular the gearbox), high requirements for lubricants and a complex gearbox sealing system.

The purpose of the proposed utility model is: to partially or completely eliminate the disadvantages of superchargers with forced mechanical drive of the compressor wheel. This is achieved by the fact that the compressor wheel drive uses a simple 2K-N type planetary gear reducer, a drive, the link of which is the carrier, and the driven link is the gear shaft, on the shaft of which the compressor wheel is mounted (i.e., the accelerator gear scheme ) The use of a planetary gearbox can significantly reduce the dimensions of the compressor drive, and since the load on the gears is reduced, in the proposed model the satellites are made of antifriction polyamide material based on thermoplastic. All this allows to simplify the design of the gearbox. The compressor and gearbox parameters are selected in such a way as to ensure that the cylinders are filled with a working mixture with overpressure in all engine operating modes, while at the same time having low idle performance to avoid damage to the dfossel assembly and inlet parts.

The proposed mechanical air blower is presented in the drawings, on which:

In FIG. 1 is the general layout of the supercharger;

In FIG. 2 shows a complete section of the used planetary gearbox.

The air blower itself (Fig. 2) is a centrifugal compressor 1 with a compressor wheel 2 mounted on the pinion shaft 22 of the planetary gear 3. The leading link of the planetary gear 3 (carrier of the planetary gear 12) is connected to the crankshaft 4 of the internal combustion engine using a belt gear 5. The compressor 1 with a planetary gear 3 is attached to the cylinder block of the engine using the plate creilBIL 6.

The supercharger drive uses a planetary reducer made according to the classical 2K-N type scheme. The gearbox consists of a housing 7, a housing cover 8, interconnected rigidly by bolts 9 together with the housing of the commissaessor 1 (Figure 1). In the housing 7 of the gearbox and its cover 8 on bearings 10 and I, a carrier 12 is installed, consisting of two parts, rigidly interconnected by means of bolts 13. Three axles 14 of the satellites are mounted in the holes of the carrier 12, which are held from axial movement, on one side , a collar of the axis, and on the other, a spring washer 15. On these axes 14, steel bearings 17 are mounted on bearings 16. The bearings 16 of the satellites 17 are fixed on the axis and relative to the satellites with the help of the washer 18 and the thrust washer 19.

The satellites themselves mesh, on the one hand, with the central wheel 20, which is rigidly fixed in the gear housing 7 with bolts 21. On the other hand, the satellites mesh with the gear shaft 22. In turn, the gear shaft 22 is centered in drove 17 with a bearing 23, on the one hand, and with two bearings 24 on the other. These bearings 24 are fixed in the drove on both sides with 1 round washers 25. Washer rings were used on the output side to seal the internal cavity of the gearbox

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26 installed in the clamping washers 27 and 28 of the bearings 24 and closed by a cover 29, rigidly connected to the cover 8 of the gear housing 7 with screws 30. From the input side, the internal cavity of the gear is sealed by a sleeve 31 mounted on the centering neck of the carrier 12 and held in place for 32 s with a sealing ring 33. The cuff fastener 32 itself is held in the housing 7 of the gearbox 3 by means of a thread. At the entrance to the carrier 12 on the segmented wheal 34 the gear pulley 35 of the toothed belt gear is rigidly fixed. From axial movement, the gear pulley through the washer 36 is held by a bolt 37. Oil is supplied to the gearbox through the bolt banjo 38 of the oil line 40. Oil from the gearbox is drained through the fitting 39.

The supercharger operates as follows: from the crankshaft 4 (Fig. 1) through a toothed belt drive 5 (Fig. 1), the torque is transmitted to the pulley 35 of the planetary gearbox 3 (Fig. 1); Further, the torque from the pulley 35 through the key 34 (Figure 2) is transmitted to the carrier 12, freely rotating in the subspins 10 and 11 of the housing 7 and transfers the force to the axis 14 of the satellite 17 and carries the satellites 17, freely rotating on the axis on the bearings 16. B in turn, the satellites 17, rolling around the stationary central wheel 20, transmit the force to the pinion shaft 22, on the shaft of which the compressor wheel 2 is rigidly fixed, causing the compressor wheel 2 to rotate. Since the drive link in this gearbox is the carrier, and the driven shaft is the gear, then this gear The torus in the supercharger drive is used as an accelerating gear. Therefore, taking into account belt transmission, the angular velocity of the compressor wheel is two times 14 times higher than the angular velocity of the crankshaft.

Literature:

1 RF Patent No. 2158373 F02B 37/00

2 A.S. No. 1590586 F02B 37/02

3 US Patent No. 6192871 F02B 33/00

May 21, 2002

E.P. Ponomarenko

Author

Claims (1)

A mechanical supercharger, which includes a centrifugal compressor and a drive, consisting of a belt gear and a gearbox, on the output shaft of which the compressor wheel is rigidly fixed, characterized in that the gearbox is made in the form of a 2K-N planetary gearbox, the driving link of which is the carrier, and the driven - a gear shaft, and the gears of the satellites are made of antifriction material based on thermoplastics.