JPS5932621A - Lubricator for engine with turbosupercharger - Google Patents

Abstract

PURPOSE:To securely lubricate a turbine shaft, by a method wherein an expansion chamber maintained substantially at the atmospheric pressure is provided which is substantially shielded from the interior space of an engine casing below a piston, and the expansion chamber is communicated with an oil return passage. CONSTITUTION:A turbosupercharger 8 is provided, a lubricating oil contained in an oil pan 21 provided at the lower part of an engine casing 11 is fed to a turbine shaft 14, and thereafter the oil is returned to the oil pan 21 through an oil return passage 25. In said engine, the expansion chamber 26 maintained at approximately atmospheric pressure is provided which is communicated to the interior of the oil pan 2 and substantially shielded from the interior space A of the engine casing 11 below the piston 5 so that it is not affected by variations of the pressure inside the space A, and the chamber 26 is communicated to the passage 25. Accordingly, the lubricating oil can be returned to the oil pan side irrespectively of the variations in the pressure of a blow-by gas, and the turbine shaft 14 can be securely lubricated.

Description

DETAILED DESCRIPTION OF THE INVENTION The indefensible engine is powered by υ1 air gas,
Engine /C Supercharged air is supplied to the turbo supercharger (to improve the 4-wheel structure).

Conventionally, the turpin shaft of the above turbocharger was l'+Q7
As a structure for supplying 141, JP-A-5L-14 (JO
Publication No. 13 states that the engine is separated from the engine.
d/Retank sword et al. Engine l/7: Driven by 7 oil J minf.

A structure is disclosed in which a separate electric oil motor supplies lubricating oil to the turbo supercharger at engine startup, etc., and collects the lubricating oil supplied to the lubricating oil tank.

77) However, the above structure leads to multisystemization of the engine laryngeal device. Eliminate output 71iH↑ is important 7i: There was a problem with the @shoulder device of the engine that supplies all the units.

By the way, as described in f) above, after spreading the laryl bone oil of the oil pan circle installed on one side of the engine case no. 1 t 11 1 t 1 1 1 1 1 1 1 1 1 1 1 1
In the bone strength type, there is a problem of insufficient @19 to the Tahin axis, as described below by VC.

That is, inside the engine casing on the side of the piston 7 with which the A-il return passage communicates, there is 10-by gas leaking from the combustion W (fγ movement V) and pressure exertion due to the n-1 movement of the piston. This pressure wJ Baso-f! Since 1g is also used for every return route, it is used to lubricate the turbine shaft.
111K reflux is eliminated and the turbine shaft moisture is added to the problem.

The present invention has been made to solve these 141 problems, and the lubricant/bone oil used in the lubricant 7' bone of the turbine shaft can be smoothly removed through the oil return passage, that is, by blow-by gas. Changes in the power of the crankcase circle - jICil
(The purpose is to provide a lubricating device for a turbocharged engine in which a thread is passed through a million oil pan.)

In addition, in V) of the present invention, the piston lower blade communicates with the inside of the oil pan provided below the engine casing, and is connected to the inside of the engine case so as to prevent pressure fluctuations in the engine casing of the piston lower blade. The expansion chamber is practically isolated with a gold film at 91 atmospheric pressure, and the oil return passage for the scrap oil fed to the turbine shaft is fully connected to this expansion chamber, and the oil return passage is connected to the piston 1 on one side. Due to pressure from the department! Isolated by Tenmao t+XJ against IUJ (-1
These are the basic features.

Hereinafter, based on the illustrated embodiment, the invention will be briefly explained.

In Fig. m], 1 is a cylinder main body 2, a cylinder head 3, a screw 1-5 which interlocks with the cylinder pore 4 in the upper part of the cylinder cylinder 2 in the vertical direction, and a screw 1-5 which moves in the vertical direction.
It is an engine that has a basic 1 tomariness system with the rotational output of the connecting connector 6'<valve L1 and the rotational output of the valve L1. A turret 1 ω 1 auxiliary machine 8 is provided for supplying the water.

This Taho passage, the uterus 8 is the intake passage 9 and the lid air passage 10.
Are they close to each other? the casing 1
1 is installed L, t811: 1 river rotation r of the turbine 12 that can be driven by the exhaust gas flowing through the pressure path IC1i flow 1-
, is transmitted by a pair of bearings 13, 13 through the bearings 1, 7ζ turbine shaft 14 to the proar 15 facing the intake air passage 9, and the proar 15 boosts the pressure of the intake air, causing combustion in the supercharged engine 1. Supply to chamber 16.

”2 Suction and exhaust passages 9. If it is, J4J+ L1 will be activated at an unreasonable timing as the main engine 1 rotates.

Suction and exhaust bows opened and closed by υto energy 47.18
-19.20VC large m-a, t't-r-yl.

On the other hand, 21 is the scar of the cylinder body 2) m 2 a (
The engine casing of the lower blade of the piston 5 is an A" tile pan in which the upper edge flange part 211 is fixed to the lower end flange part 21). 1st part requires 'B: 7r A-'17□1'' 11th supply meeting. The supply of this 11♀1rit oil is 1
, 1-1 is not shown in the figure, but the oil pump driven by the engine 1 is connected to the oil pump 11-1.
Turbine l1lIll14 of turbocharger 8? quiet time
i'i's 7f (/i-), a 7 oil feed passage 23 is provided, one end of which communicates with the oil 11 fll passage 22 of the cylinder head 13, and the 1142nd end of this A oil phase advancement passage 23, of course, the turner ji- 4) Communicates with the oil seal A'ket 24 formed between the pair of bearings 13, 13 of the oval rock 8, +! :ing.

As shown in the drawings, the lubricating oil used for lubrication of the turbine shaft 14 in the oil jacket 24 is transferred through the oil return passage 25. yr'iljacket 24 swords) and 10,000 il/(n 21 swords) to return to.

The lower end of this oil return passage 25 is
A-Extension 'J 2 connected to the interior of y<n21
The upper part of 6 is bent. In the wooden embodiment, this expansion chamber 26 includes a part of the side wall of the multi-purpose pan 21. + and the lower end flange portion 2b of the cylinder body 2 are exposed upward in the direction 7
This projecting wall 29 forms one closed space.

The partition wall 28 is arranged at the lower surface 4 of the 13th end notch part 2b of the scar 1-HB2a so that the expansion chamber 26 and the circular part A of the engine casing below the piston 5 are substantially separated. At the lower end side, there is an aperture communication port 30 that connects the bottom part of the expansion chamber 26, the part 1 part of the pan 21, and the r part. It is set up.

In addition, the expansion chamber 26 is communicated with the expansion chamber 2 (50 yen pressure is maintained at atmospheric pressure) by means of a connecting pipe 31 inserted into the hole fzI of the protruding wall 29. ing.

In the 1N configuration, the internal pressure of the expansion chamber 26 is maintained at atmospheric pressure, so atmospheric pressure is always applied to the lower end of the oil return passage 25, and the turbo supercharger 8 A゛Il Sea V Butt 24 Oil Pressure, t'EI r'
! ) The lubricating oil is supplied from the oil pump and the lubricating oil is returned to the expansion chamber 26 yen smoothly. That is, the oil return path 25 is a screw!・
Engine gauging 17' below engine 5] 2i-
What is the effect of pressure fluctuations that occur? Is it possible to recirculate the llan h7 oil without any damage, and with the oil jacket 24VCs, the oil supply amount and recirculation amount can be adjusted to make the turbine shaft 14-karat gold effective? It's a monkey to be lazy.

11, the lubricating oil returned to the expansion chamber 26 is opened 1d
30'<1ii1 and is returned to the oil pump 1. In this case, the pressure fluctuation inside the engine casing A below the piston 5 is as follows:
Although there is a possibility that the above pressure fluctuation is transmitted as a flow J of tl'Sho'A lt+], the above-mentioned pressure fluctuation can be suppressed by the above pressure fluctuation due to its convergence effect. It's not a problem because it can be done.

Kibenmei is not limited to the preparation of the examples described above.

For example, the front partition wall 28 does not need to completely partition the piston 51/one engine cage jig internal space A from the expansion chamber 26, and the aperture opening 30 is used to draw water and oil from the surface of the oil pan 1. It may be opened at the upper part 1 of the drying area between 711j and a small 114J gap between the oil level and the upper edge of the cooking 9 opening. Weird lol
1% is good as long as it does not have any adverse effects on pressure fluctuations on Jichiro 25. However, the popular communication bike 31 is not necessarily necessary, and the expansion chamber 2
Only when a predetermined pressure higher than the internal pressure of 6 or the human pressure is reached,
Equipped with a relief function to relieve circular pressure, use the F3 to release the internal pressure of the expansion chamber 26. 1-1l' without causing any hindrance to oil reflux! It is better to maintain the pressure at a certain degree. In addition, the part that forms the expansion ¥26%) niJ
The invention is limited to the above embodiments.

Claims (1)

[Scope of Claims] (II. After the turbocharger is installed and the oil pan provided on one side of the engine casing is fed to the turbine of the turbocharger, oil return J
The engine is designed to flow back to the oil pan via a channel.
At the VC, the oil pan [7 is connected to the same part, and the pressure fluctuation receiver t-1 in the enoshin casing below the piston is 6!
2] - Engine case [provide an expansion unit with almost human pressure that is substantially isolated from the η section, and connect this expansion case with the above oil return passage? J-! 4! Songs (7 features of Turbo Blue 5) Stores (A shallow ginseng's laryngeal apparatus.