CN211819564U

CN211819564U - Crankcase ventilation system and engine with same

Info

Publication number: CN211819564U
Application number: CN201922262745.6U
Authority: CN
Inventors: 徐菁菁; 王凝露; 张玉娟; 朱桂香; 杨文�
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-10-30
Anticipated expiration: 2029-12-13

Abstract

The utility model belongs to the technical field of the crankcase ventilation, concretely relates to crankcase ventilation system and have its engine. The utility model provides a crankcase ventilation system is including the crankcase, oil and gas separator, exhaust gas heater and the exhaust gas condenser that connect gradually, wherein, the exhaust gas condenser is equipped with the waste liquid collecting vat. Through using the crankcase ventilation system among this technical scheme, increased exhaust gas heater and exhaust gas condenser in proper order between oil and gas separator and booster, the waste liquid collecting vat can be collected to the moisture condensation that gets into in the booster in advance to the exhaust gas condenser, when the vapor of forced condensation freezes and blocks up the pipeline, exhaust gas heater can be with the final flow direction waste liquid collecting vat of ice body heating, has reduced the harm of moisture content in to follow-up booster and the intercooler operation like this.

Description

Crankcase ventilation system and engine with same

Technical Field

The utility model belongs to the technical field of the crankcase ventilation, concretely relates to crankcase ventilation system and have its engine.

Background

The closed circulation crankcase ventilation system is adopted in most of the six national engines, and under the condition that the ambient temperature is lower than zero, water vapor in the waste gas of the crankcase can be condensed and frozen to block an air outlet pipe, so that the ventilation of the crankcase is not smooth, and engine oil can be pressed out from an oil dipstick pipe in serious conditions, so that major faults such as engine oil shortage, cylinder drawing, tile forming and the like are caused. The scheme of heat preservation or active heating that uses at present promotes the temperature of giving vent to anger and has the same problem, and the gas is cooled down to ambient temperature in the twinkling of an eye when the waste gas gets into the horn mouth from the outlet duct, causes the pipeline to freeze.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the water vapor in the waste gas of the crankcase can be condensed and frozen to block the outlet duct. The purpose is realized by the following technical scheme:

the utility model discloses a first aspect provides a crankcase ventilation system, including crankcase, oil and gas separator, exhaust gas heater and the exhaust gas condenser who connects gradually, wherein, the exhaust gas condenser is equipped with the waste liquid collecting vat.

Through using the crankcase ventilation system among this technical scheme, increased exhaust gas heater and exhaust gas condenser in proper order between oil and gas separator and booster, the waste liquid collecting vat can be collected to the moisture condensation that gets into in the booster in advance to the exhaust gas condenser, when the vapor of forced condensation freezes and blocks up the pipeline, exhaust gas heater can be with the final flow direction waste liquid collecting vat of ice body heating, has reduced the harm of moisture content in to follow-up booster and the intercooler operation like this.

In addition, according to the utility model discloses a crankcase ventilation system still can have following additional technical characterstic:

in some embodiments of the present invention, the bottom of the waste liquid collecting tank is further provided with a liquid removing hole.

In some embodiments of the present invention, the exhaust gas condenser further comprises a liquid removal bolt, and the liquid removal bolt is matched with the liquid removal hole.

In some embodiments of the present invention, the exhaust gas condenser further comprises a heat exchange area, the liquid removing bolt and the waste liquid collecting tank are both located below the heat exchange area.

The utility model discloses an in some embodiments, remove the liquid bolt and include locking portion and straight board portion, locking portion with remove liquid hole looks adaptation, straight board portion is located inside the waste liquid collecting vat.

In some embodiments of the invention, the crankcase ventilation system further comprises a pressure sensor for detecting a pressure of the crankcase.

The present invention also provides an engine comprising the crankcase ventilation system of the above embodiment.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:

fig. 1 schematically shows an overall system schematic of a crankcase ventilation system according to an embodiment of the invention;

fig. 2 schematically shows an overall structural sectional view of an exhaust gas condenser according to an embodiment of the present invention;

FIG. 3 is a schematic view of the overall structure of the fluid-removing bolt shown in FIG. 2;

FIG. 4 is a schematic front view of the fluid-removing bolt shown in FIG. 3;

FIG. 5 is a schematic side view of the fluid-removing bolt shown in FIG. 3.

11: waste liquid collection tank, 12: heat exchange area portion, 13: liquid removal bolt, 131: locking portion, 132: a straight plate portion.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Fig. 1 schematically shows an overall system schematic of a crankcase ventilation system according to an embodiment of the invention. Fig. 2 schematically shows an overall structural section of an exhaust gas condenser according to an embodiment of the present invention. As shown in fig. 1 and 2, the utility model provides a crankcase ventilation system and have its engine. In fig. 1, the dashed arrows indicate the direction of electrical signal transmission, and the solid arrows indicate the direction of gas flow. The utility model provides a crankcase ventilation system is including the crankcase, oil and gas separator, exhaust gas heater and the exhaust gas condenser that connect gradually, and wherein, the exhaust gas condenser is equipped with waste liquid collecting vat 11.

Through using the crankcase ventilation system among this technical scheme, increased exhaust gas heater and exhaust gas condenser in proper order between oil and gas separator and booster, the exhaust gas condenser can be in advance with the moisture condensation that gets into in the booster collect waste liquid collecting vat 11, when the water vapor of forced condensation freezes and blocks up the pipeline, exhaust gas heater can be with the final flow direction waste liquid collecting vat 11 of ice body heating, has reduced the harm of moisture content in to follow-up booster and the intercooler operation like this.

Further, in this embodiment, the bottom of waste liquid collecting vat 11 still is equipped with except that the liquid hole, removes the liquid hole and can clear away the moisture content that abandonment condenser condensation goes out at any time to make the waste gas condenser can collect the waste liquid once more.

Specifically, in this embodiment, the exhaust gas condenser further includes a liquid removing bolt 13, and the liquid removing bolt 13 is matched with the liquid removing hole, wherein the exhaust gas condenser further includes a heat exchange area portion 12, and the liquid removing bolt 13 and the waste liquid collecting tank 11 are both located below the heat exchange area portion 12. The waste liquid collecting tank 11 adopts a special structure, when the temperature is higher, the cooled liquid water is liquid water, and can be removed by normal water drainage, and when the temperature is lower, the cooled liquid water is the same shape as the bolt after being frozen due to the special structure of the bolt, and can be screwed out together with the bolt, so that the cleaning is convenient.

Specifically, in the present embodiment, the drain bolt 13 includes a locking portion 131 and a straight plate portion 132, the locking portion 131 is fitted to the drain hole, and the straight plate portion 132 is located inside the waste liquid collection tank 11. When the temperature of the exhaust gas condenser is low, due to the special structure of the straight plate part 132 of the bolt, the cooled liquid water is in a bolt shape after being frozen, and the ice body is matched with the straight plate part 132 in shape and can be screwed out together with the bolt, so that the exhaust gas condenser is convenient to clean.

Further, in this embodiment, the crankcase ventilation system further comprises a pressure sensor for detecting a pressure of the crankcase. Crankcase pressure sensor real-time supervision pipeline pressure freezes when the refrigerated vapor condensation of force and blocks up the outlet duct, leads to crankcase pressure to rise when to 3kPa, and exhaust gas heater will heat crankcase waste gas, and then makes freezing in the pipeline melt, and the waste water after melting is remitted into waste liquid collecting vat 11.

Specifically, in the present embodiment, the crankcase, the gas-oil separator, the exhaust gas heater and the exhaust gas condenser are connected by pipelines.

Specifically, in the embodiment, during normal operation of the engine, the crankcase exhaust gas enters the exhaust gas condenser after passing through the oil-gas separator and the exhaust gas heater. The exhaust gas condenser is of an air cooling structure, can be arranged at the windward side of an engine or the lower end of a intercooler, can quickly cool exhaust gas of a crankcase when the ambient temperature is low, and water and organic matters which are condensed out flow into the waste liquid collecting tank 11, so that filtered gas enters the supercharger.

The utility model also provides an engine, crankcase ventilation system more than including.

Through using the engine among this technical scheme, crankcase ventilation system on the engine has increased exhaust gas heater and exhaust gas condenser between oil and gas separator and booster in proper order, and the exhaust gas condenser can collect the waste liquid collecting vat with the moisture condensation that gets into in the booster in advance, and when the water vapor of forced condensation freezes and blocks up the pipeline, exhaust gas heater can heat the final flow direction waste liquid collecting vat with the ice body, has reduced the harm of moisture in to follow-up booster and the intercooler operation like this.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a crankcase ventilation system which characterized in that, including crankcase, oil and gas separator, exhaust heater and the exhaust gas condenser who connects gradually, wherein, the exhaust gas condenser is equipped with the waste liquid collecting vat.

2. The crankcase ventilation system of claim 1, wherein the waste collection tank further comprises a drain hole in a bottom portion thereof.

3. The crankcase ventilation system of claim 2, wherein the exhaust gas condenser further comprises a weep bolt that mates with the weep hole.

4. The crankcase ventilation system of claim 3, wherein the exhaust gas condenser further comprises a heat exchange section, and the fluid removal bolt and the waste collection tank are both located below the heat exchange section.

5. The crankcase ventilation system of claim 3, wherein the drain bolt comprises a locking portion that mates with the drain hole and a straight plate portion that is located inside the waste collection tank.

6. The crankcase ventilation system of claim 1, further comprising a pressure sensor for sensing a pressure of the crankcase.

7. An engine having a crankcase ventilation system according to any one of claims 1-6.