CN209117459U - A kind of engine pedestal vehicle emission measurement system - Google Patents

Abstract

The utility model relates to a kind of engine pedestal vehicle emission measurement systems, including engine, automobile exhaust analyzer and tail gas de-watering apparatus, tail gas de-watering apparatus is connected between engine and automobile exhaust analyzer, the tail gas de-watering apparatus includes tail gas heating pipe, tail gas condensing pipe and condensing bulb, tail gas heating pipe one end is connected to engine, branch's air inlet pipe is equipped on tail gas heating pipe, air inlet and venthole are equipped on the bottle cap of condensing bulb, the outlet side of branch's air inlet pipe is extend into condensing bulb by air inlet, the venthole of condensing bulb is connected to by tail gas condensing pipe with the inlet end of automobile exhaust analyzer, and tail gas condensing pipe is wrapped on tail gas heating pipe.The utility model can effectively remove the generation of condensate phenomenon when motor exhaust enters automobile exhaust analyzer front end, the precision for improving equipment service efficiency, improving test equipment by the way that tail gas de-watering apparatus is arranged between engine and automobile exhaust analyzer.

Description

A kind of engine pedestal vehicle emission measurement system

Technical field:

The utility model belongs to technical field of automobile detection, and in particular to a kind of engine pedestal vehicle emission measurement system.

Background technique:

Currently, release motor " state six " emission regulation, regulation discharge gaseous pollutant limit value into one to vehicle for country Step adds tight.According to previous engine research, development mode, only engine emission gaseous pollutant is demarcated under vehicle environment Optimization can no longer meet requirement.Most of enterprise is all primarily focused on the raw emissions gaseous pollutant of engine pedestal Calibration, the frequency of use of so direct sampling type automobile exhaust analyzer of engine pedestal is gradually increased.And it is existing therewith Problem also gradually protrudes, and wherein the phenomenon that motor exhaust condensation water slug analyzer strainer, which not only influences engine The measuring accuracy of raw emissions will lead to the NOX in tail gas and be dissolved in liquid water and generate nitric acid when condensed water deposits collection certain time Salting liquid, nitrate solution parse a large amount of azotate deposition object in heat evaporation, block solenoid valve, cause the damage of equipment It is bad.

Utility model content:

The utility model is to overcome drawbacks described above, provides a kind of engine pedestal vehicle emission measurement system, is sent out by removal Moisture in motivation tail gas, and the tail gas after moisture removal will be gone to heat again by tail gas heating pipe, to guarantee that tail gas exists There is no liquid water condensation when into automobile exhaust analyzer.

The technical solution adopted in the utility model is: a kind of engine pedestal vehicle emission measurement system, including engine, vapour Tail gas analyzer and tail gas de-watering apparatus, tail gas de-watering apparatus is connected between engine and automobile exhaust analyzer, described Tail gas de-watering apparatus includes tail gas heating pipe, tail gas condensing pipe and condensing bulb, and tail gas heating pipe one end is connected to engine, in tail Gas heating tube is equipped with branch's air inlet pipe, and air inlet and venthole are equipped on the bottle cap of condensing bulb, and branch's air inlet pipe goes out Gas end is extend into condensing bulb by air inlet, the venthole of condensing bulb by tail gas condensing pipe and automobile exhaust analyzer into The connection of gas end, and tail gas condensing pipe is wrapped on tail gas heating pipe.

Preferably, the diameter of the tail gas heating pipe is 100mm-130mm.

Preferably, the tail gas condensing pipe is wrapped on tail gas heating pipe more than at least 3 circles.

The beneficial effects of the utility model are:

1, by the way that tail gas de-watering apparatus is arranged between engine and automobile exhaust analyzer, engines tail can be effectively removed The generation of condensate phenomenon when gas enters automobile exhaust analyzer front end, the precision for improving equipment service efficiency, improving test equipment.

2, the tail gas in tail gas heating pipe is carried out through condensing bulb except after water process, then is heated to 100 through tail gas heating pipe DEG C or more, to guarantee that tail gas does not have liquid water condensation when entering automobile exhaust analyzer.

3, the utility model has structure simple, and operating effect is good, practical feature.

Detailed description of the invention:

Fig. 1 is the structural schematic diagram of the utility model；

Wherein: 1 engine, 21 tail gas heating pipes, 22 tail gas condensing pipes, 23 branch's air inlet pipe, 24 condensing bulbs, 3 car tails Gas analyzer.

Specific embodiment:

As shown in Figure 1, the utility model is a kind of engine pedestal vehicle emission measurement system, including the engine being sequentially connected in series 1, tail gas de-watering apparatus and automobile exhaust analyzer 3, tail gas de-watering apparatus include tail gas heating pipe 21, tail gas condensing pipe 22 and cold Solidifying bottle 24 summarizes position in 1 ternary catalyzing unit upper end of engine and punches, 21 one end of tail gas heating pipe is inserted into from the hole and is started Connection is realized in machine 1, since the exhaust temperature being expelled directly out in engine 1 is generally between 600-800 DEG C, when in order to make acquisition Tail gas heating pipe 21 can be made to realize the purpose of heating in follow-up work by a large amount of tail gas in tail gas heating pipe 21, this Utility model is by the diameter design of tail gas heating pipe 21 at 100mm-130mm.One and tail gas are equipped on tail gas heating pipe 21 Branch's air inlet pipe 23 that heating tube 21 is connected to is equipped with air inlet and venthole, branch's air inlet pipe 23 on the bottle cap of condensing bulb 24 Outlet side the lower part of condensing bulb 24 is extend into from the air inlet of condensing bulb 24, and branch's air inlet pipe 23 and air inlet sealing connect It connects, the inlet end of tail gas condensing pipe 22 is extend into the venthole of condensing bulb 24, the outlet side of tail gas condensing pipe 22 and car tail The inlet end of gas analyzer 3 is connected to, in order to extend residence time of the tail gas high temperature gas in condensing bulb 24, tail gas condensing pipe 22 inlet end level height be higher than branch's air inlet pipe 23 outlet side level height, and the liquid condensed to the cold be left in it is cold The bottom of solidifying bottle 24.In order to further remove the moisture after condensation in tail gas, 22 middle section of tail gas condensing pipe is wrapped in tail In gas heating tube 21, the tail gas after making water removal is heated again, makes the tail in tail gas condensing pipe 22 by tail gas heating pipe 21 Gas is heated to 100 DEG C or more, it is ensured that tail gas does not have liquid water condensation when entering automobile exhaust analyzer.In order to make tail gas condensing pipe 22 heating effect is more preferable, and tail gas condensing pipe 22 is wrapped on tail gas heating pipe 21 more than at least 3 circles.

In order to keep the condensation effect of condensing bulb 24 more preferable, ice-water bath can be set in the outside of condensing bulb 24, by condensing bulb 24 are placed in the device for being loaded with ice or brine ice.

The course of work:

When detection, engine 1 is started to work, and tail gas is discharged from engine 1, and partial tail gas enters from branch's air inlet pipe 23 Into condensing bulb 24, since condensing bulb 24 and the tail gas temperature difference are big, the part water-setting in tail gas forms water, stays in the bottom of condensing bulb 24 Portion, and the tail gas after removing water is from being flowed into car tail after tail gas heating pipe 21 is heated to 100 DEG C or more in tail gas condensing pipe 22 In gas analyzer 3.When liquid is excessive in condensing bulb 24, periodically toppled over.

The preferable specific embodiment of the above, only the utility model, these specific embodiments are all based on this Different implementations under utility model general idea, and the protection scope of the utility model is not limited thereto, it is any ripe Know those skilled in the art within the technical scope disclosed by the utility model, any changes or substitutions that can be easily thought of, all It should cover and be within the protection scope of the utility model.Therefore, the protection scope of the utility model should be with claims Subject to protection scope.

Claims (3)

1. a kind of engine pedestal vehicle emission measurement system, including engine (1) and automobile exhaust analyzer (3), which is characterized in that Further include: tail gas de-watering apparatus, tail gas de-watering apparatus are connected between engine (1) and automobile exhaust analyzer (3), the tail Gas de-watering apparatus includes tail gas heating pipe (21), tail gas condensing pipe (22) and condensing bulb (24), tail gas heating pipe (21) one end with Engine (1) connection, branch's air inlet pipe (23) is equipped on tail gas heating pipe (21), is equipped on the bottle cap of condensing bulb (24) The outlet side of air inlet and venthole, branch's air inlet pipe (23) is extend into condensing bulb (24) by air inlet, condensing bulb (24) Venthole be connected to the inlet end of automobile exhaust analyzer (3) by tail gas condensing pipe (22), and tail gas condensing pipe (22) twines It is wound on tail gas heating pipe (21).

2. a kind of engine pedestal vehicle emission measurement system as described in claim 1, it is characterised in that: the tail gas heating pipe (21) diameter is 100mm-130mm.

3. a kind of engine pedestal vehicle emission measurement system as described in claim 1, it is characterised in that: the tail gas condensing pipe (22) it is wrapped on tail gas heating pipe (21) more than at least 3 circles.