CN2436668Y

CN2436668Y - Mechanical gas compensator for gasoline engine

Info

Publication number: CN2436668Y
Application number: CN 00251172
Authority: CN
Inventors: 赵坤鹏; 杨洪敏; 刘少学
Original assignee: Benjing Luchuang Environment Protection Equipment Co ltd
Current assignee: Beijing Luchuang Environmental Protection Equipment Co., Ltd.
Priority date: 2000-09-12
Filing date: 2000-09-12
Publication date: 2001-06-27
Anticipated expiration: 2010-09-12

Abstract

The utility model relates to a mechanical gas compensator for gasoline engines. The utility model is characterized in that the mechanical gas compensator for gasoline engines comprises an outer shell, a lower cover board fixed on the bottom of the outer shell, a filter core arranged on the top of the lower cover board, and a fixing board arranged on the top of the filter core. The fixing plate outside the filter core is at intervals provided with ventilating space which is communicated with the upper part and the lower part of the outer shell. An upper cover board is fixed on the top of the outer shell. The upper cover board is provided with an air passage. The air inlet end and the air outlet end of the air passage are respectively communicated to the inner part and the outer part of the outer shell. The air inlet end of the air passage is provided with an air inlet quantity regulating device. The utility model has the advantages of simple structure, and lower cost. The mechanical gas compensator for gasoline engines not only can be alone used as a purifier but also can replace an electrical controlling air supply device to match with a ternary catalytic converter to purify automobile exhaust gas.

Description

Petrol engine machinery making-up air device

The utility model relates to a kind of petrolic making-up air device, particularly about a kind of petrolic mechanical making-up air device.

Along with the continuous development of modern city, to come on the referred more and more agenda of environmental pollution problems, wherein motor vehicle exhaust emission pollution problems is the urban development major issue that will solve especially.One of method of dealing with problems, the rules of working out increasingly stringent ground restricting vehicle exhaust emissions exactly.For reaching the standard of exhaust emissions, the device of depending merely in the existing motor car engine is difficult to reach, so must the outer treatment device of machine for casing-in or applying cover to book.And each city is because the difference of development level is also different for the emission of automobile wastes standard, metropolitan often emission standard height, in, the emission standard of small city is lower.Such as Beijing, all require to install additional electrically controlled gas supplementing device and three-way catalytic converter on the automobile.Because during three-way catalytic converter work, air fuel ratio is had relatively high expectations, therefore need install auxiliary electrically controlled gas supplementing device additional, though this device can more accurately be controlled air fuel ratio, but structure more complicated, price are also somewhat expensive, thereby make the overall cost of whole exhaust gas cleaner higher, more flourishing small and medium-sized cities sensation can't be born, and using in the not high place of emission request simultaneously also is a kind of waste.

At the problems referred to above, the purpose of this utility model provide a kind of simple in structure, cost is lower, both can be separately uses the mechanical making-up air device of the petrol engine that can replace electrically controlled gas supplementing device and three-way catalytic converter to be used again as purification plant.

For achieving the above object, the utility model is taked following design: a kind of petrol engine machinery making-up air device is characterized in that it comprises: a shell; One lower cover plate, it is fixed on the bottom of described shell, and the central authorities of described lower cover plate have an inlet hole; One filter core, it is arranged on the interior described lower cover plate of described shell; One fixed plate, it is arranged on the described filter core top in the described shell, is arranged at intervals with the ventilation space that is communicated with described shell top and the bottom on the described fixed plate of described filter core outside; One upper cover plate, it is fixed on the top of described shell, and described upper cover plate is provided with an air passageways, and the inlet, outlet end of described air passageways is communicated with the inside and outside portion of described shell respectively, and the inlet end of described air passageways is provided with an air inflow controlling device.

Described air passageways is one laterally to run through the reducing hole of described upper cover plate, bottom, described reducing hole is communicated with an air inlet duct, the inlet end length in described reducing hole surpasses described air inlet duct, and be a thinner screw, the outlet side in described reducing hole is a thicker screw, described thick, between the thin screw is the conical section of a flaring, the outlet end in described reducing hole is provided with a steam outlet pipe, has a reducing hole in the described steam outlet pipe, described reducing hole thick, the conical section that has a convergent between thin two holes, described air inflow controlling device is an adjusting screw, and it is arranged on the inlet end in described reducing hole.

The utility model is owing to take above design, it has the following advantages: 1, the utility model is owing to be provided with air filter, air passageways and be arranged on the air inflow controlling device of air passageways entrance point, therefore, the air of cleaning constantly can be replenished as required to petrol engine, regulate petrolic air fuel ratio effectively, reduced the pollution concentration of exhausting air from the angle of control petrol engine air fuel ratio.Make the utility model both can be installed on the petrol engine, in the not too high city of emission standard, use as exhaust gas cleaner separately, again can be in the higher city of emission standard, as the auxiliary air compensating device use of exhaust gas processing devices such as three-way catalytic converter.2, the utility model is owing to structural designs such as the flaring that adopts air inlet duct, adjusting screw and air passageways, convergents, and it is not only simple in structure, and volume is little, and cost is low, and whole device is abated the noise, steady air current, the linearly adjust of realization air compensation.The utility model can be widely used on the petrol engine that uses on the various petrol engines, particularly automobile.

Below in conjunction with drawings and Examples the utility model is described in detail.

Fig. 1 is the utility model structural representation

Fig. 2 is the utility model lower cover plate structural representation

Fig. 3 is the schematic top plan view of Fig. 2

Fig. 4 is the utility model fixed plate structural representation

Fig. 5 is the A-A cross-sectional schematic of Fig. 4

Fig. 6 is the utility model upper cover plate structural representation

Fig. 7 is the elevational schematic view of Fig. 6

As shown in Figure 1, the utility model comprises a cylinder blanket 1, and the top of shell 1 has a circle to the outstanding flange 2 of center of circle direction.As Fig. 1, Fig. 2, shown in Figure 3, fix a lower cover plate 3 in shell 1 bottom, the central authorities of lower cover plate 3 have an inlet hole 4, and the top of lower cover plate 3 has a circle flange 5, the sheathed one columniform ceramic element 6 in the outer ring of flange 5.Pressure is established a fixed plate 7 at filter core 6 tops, is arranged at intervals with the ventilation space 8 that is communicated with shell 1 top and the bottom on the fixed plate 7 beyond filter core 6 excircles.Ventilation space on the fixed plate 7 can be perforate thereon, also can be a floral disc (as Fig. 4, Fig. 5), and the hollow part branch of floral disc can be used as ventilation space 8 and is communicated with upward lower casing 1.As Fig. 1, Fig. 6, shown in Figure 7, on the flange 2 at shell 1 top, fix a upper cover plate 9, the bottom surface of upper cover plate 9 has an air inlet duct 10, be provided with at the top of air inlet duct 10 one with its perforation, and the reducing hole 11 of lateral direction penetrating upper cover plate 9, the inlet end length in reducing hole 11 surpasses air inlet duct 10, and be a thinner screw 12, when an adjusting screw 13 is screwed into screw 12, and with a nut 14 fixedly the time, can control enter the outlet side air what, i.e. control give petrolic air compensation what.The outlet side in reducing hole 11 is a thicker screw 15, and a steam outlet pipe 16 is screwed into screw 15, and the other end of steam outlet pipe 16 is connected with petrolic tonifying Qi end by pipeline.Between two

screws

12,15 in reducing hole 11 is the conical section 17 of a flaring, and a reducing hole 18 is also arranged in the steam outlet pipe 16, is the conical section 19 of a convergent between the thickness hole.The conical section 17 of flaring mainly plays decompression, eliminates the noise in the reducing hole 11, and the conical section 19 of convergent mainly plays voltage stabilizing, water conservancy diversion in the reducing hole 18.

In the foregoing description, the shape of each parts and form all can change to some extent, also can be four ribs, six ribs, eight prismatic such as the shape of shell 1.Also can take other air filting material as airfiltering ceramic element 6.The shape of upper and

lower cover plate

9,3 can change to some extent, they with shell 1 between be connected also and can adopt variety of way.The air passageways that reducing hole on the upper cover plate 9 and steam outlet pipe 16 formed and also can take other mode of structure as the adjusting screw of controlling device, but this air passageways of the present utility model is relatively simple for structure, easy to make.

When the utility model uses, can be directly installed on the clamp in the motor cabin.Fresh air enters in the filter core from the inlet hole 4 of lower cover plate 3, and the ventilation space 8 that passes after filtering on the fixed plate 7 enters air inlet duct 10, rotates adjusting screw 13, regulates the space of exposing between air inlet duct 10 and the screw 12, just can control air inflow.The air that enters reducing hole 11 replenishes to petrol engine behind the noise elimination pressure stabilization function of flaring, converging transition.

Claims

1, a kind of petrol engine machinery making-up air device, it is characterized in that: it comprises:

One shell;

One lower cover plate, it is fixed on the bottom of described shell, and the central authorities of described lower cover plate have an inlet hole;

One filter core, it is arranged on the interior described lower cover plate of described shell;

One fixed plate, it is arranged on the described filter core top in the described shell, is arranged at intervals with the ventilation space that is communicated with described shell top and the bottom on the described fixed plate of described filter core outside;

One upper cover plate, it is fixed on the top of described shell, and described upper cover plate is provided with an air passageways, and the inlet, outlet end of described air passageways is communicated with the inside and outside portion of described shell respectively, and the inlet end of described air passageways is provided with an air inflow controlling device.

2, petrol engine machinery making-up air device as claimed in claim 1, it is characterized in that: described air passageways is one laterally to run through the reducing hole of described upper cover plate, bottom, described reducing hole is communicated with an air inlet duct, the inlet end length in described reducing hole surpasses described air inlet duct, and be a thinner screw, the outlet side in described reducing hole is a thicker screw, described thick, between the thin screw is the conical section of a flaring, the outlet end in described reducing hole is provided with a steam outlet pipe, has a reducing hole in the described steam outlet pipe, described reducing hole thick, the conical section that has a convergent between thin two holes, described air inflow controlling device is an adjusting screw, and it is arranged on the inlet end in described reducing hole.