CN2315301Y - Negative pressure machine oil saving device for IC engine crank - Google Patents

Abstract

The utility model relates to a negative pressure machine oil-saving device for the crankcase of an internal combustion engine, and the utility model is composed of an oil-gas separator, a connecting angle pipe, a negative pressure pipe and a throat pipe. An internal combustion engine is utilized for air exhaust, negative pressure is generated through the throat pipe welded on the end of the main pipe of a silencer, and gas in a crankcase is extracted through the negative pressure pipe; at the same time, the oil-gas separator is adopted to separate machine oil from the extracted gas, and the machine oil flows back and is utilized. The utility model has the advantages that the extraction and the suction function of the utility model is stable and reliable, ventilation effect is favorable, the machine oil and oil gas which are extracted and sucked can be separated and recycled, and the effect of machine oil saving is remarkable; besides, the utility model has simple structure and low fabrication cost, and the utility model can be adopted by a single-cylinder internal combustion engine and a multi-cylinder internal combustion engine.

Description

The crank case of internal combustion engine negative pressure is saved the machine oil device

The utility model is a kind of saving machine oil device that produces negative pressure in the crank case of internal combustion engine that makes.

When combustion in IC engine was in the malleation working stroke, gas infiltrated in the crankcase by piston, piston ring, steel-jacket gap place, so gas is in barotropic state all the time in the crankcase.Because the crankcase inner engine oil is hit to produce splash lubrication with crankshaft rotating,, cause machine oil outwards to ooze out from each oil sealing of crankcase and oil filler place so that machine oil forms is vaporific.Particularly during suction stroke, vaporific machine oil is oppositely scurried in the firing chamber, more can consume machine oil in a large number.Usually adopt natural ventilation equipment or suction tude pressure gas-returning devices, reduce malleation in the crankcase, form negative pressure in the crankcase but all can not make, saving machine oil effect is bad.Simultaneously, force gas-returning devices still to make vaporific machine oil return the firing chamber internal combustion, produce adverse consequencess such as carbon distribution with waste gas.

The purpose of this utility model is: provide a kind of simple, practical crank case of internal combustion engine negative pressure to save the machine oil device, can extract gas in the crankcase effectively, can from the gas that extracts vaporific machine oil thoroughly be separated again, be back in the crankcase and utilize.

The utility model is achieved in that

By deaerator, bridge piece, the negative pressure pipe, trunnion is formed; Trunnion is welded on the end of silencing apparatus main pipe, and the pipe of negative pressure pipe is chewed in the vertical insertion trunnion; The other end of negative pressure pipe is connected with the deaerator outlet through connecting bend pipe; Deaerator directly is contained on the pneumostome or machine oil oil filler of crankcase.

The utility model has the advantages that: according to hydromechanical Bernoulli's equation, $P+\frac{1}{2}\mathrm{\&rho;}{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="Y9724431100041.png"\; state="\{\{state\}\}">V</figure-callout>}}^2=C$ Basic principle, utilize the exhaust flow velocity to produce suction, extract waste gas in the crankcase; Before waste gas is extracted out, through deaerator vaporific machine oil is thoroughly separated with waste gas again, flow back to crankcase after the machine oil cohesion; Simple in structure, cheap, save machine oil, respond well; Single cylinder, multi-cylinder engine all can adopt.

Accompanying drawing is a general structure schematic representation of the present utility model.

Below in conjunction with description of drawings working principle of the present utility model and process: silencing apparatus main pipe 1 terminal welding trunnion 2, trunnion 2 sides are inserted the pipe of negative pressure pipe 3 and are chewed.When blast air during through trunnion 2, flow velocity is accelerated, and static pressure P descends, and produces the negative pressure-pumping effect.Mixed gass in the crankcase 6 are sucked, and through deaerator 5, wherein vaporific machine oil thoroughly separates with waste gas, and machine oil is condensed into drop and flows back to crankcase 6, waste gas then through bridge piece 4, negative pressure pipe 3 to trunnion 2, discharge with exhaust.All the time be negative pressure state in the crankcase 6.

The utility model is installed on four-wheel tractor power 485 diesel engines, and negative pressure pipe pipe is chewed and is La Daiershi, and deaerator is a mazy type, and Oil-gas Separation is thorough, and saving machine oil effect is remarkable.

Claims (1)

1. a crank case of internal combustion engine negative pressure is saved the machine oil device, it is characterized in that: by deaerator (5), and bridge piece (4), negative pressure pipe (3), trunnion (2) is formed; Trunnion (2) is welded on the end of silencing apparatus main pipe (1), and the pipe of negative pressure pipe (3) is chewed in the vertical insertion trunnion (2); The other end of negative pressure pipe (3) is connected with deaerator (5) outlet through connecting bend pipe (4); Deaerator (5) directly is contained on the pneumostome or machine oil oil filler of crankcase (6).

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