CN204436625U - Burning motor mixed by a kind of environment-friendly methanol, diesel oil - Google Patents

Abstract

The utility model discloses an environment-friendly methanol and diesel blended combustion engine, which belongs to the technical field of engine combustion and tail gas treatment. Its technical solution is: an environmentally friendly methanol and diesel blended combustion engine, including engine intake and exhaust systems, characterized in that an EGR assembly is arranged at the engine water pipe of the engine exhaust system; The methanol injection device is provided with an exhaust aftertreatment assembly at the general exhaust pipe of the engine exhaust system. The beneficial effects of the utility model are: the methanol blended combustion mode engine is more economical than the existing pure diesel engine; the EGR assembly and the engine cooling water perform heat exchange to reduce the outlet temperature of the EGR assembly and avoid excessive intake air temperature. The fuel consumption rises; the combustion of diesel in the engine is suppressed, thereby reducing NOX and PM emissions.

Description

An environmentally friendly methanol and diesel blended combustion engine

technical field

The utility model relates to the technical field, in particular to an environmentally friendly methanol and diesel mixed combustion engine.

Background technique

At this stage, the requirements of emission regulations are becoming more and more stringent, and the D10.34-40M engine with the original National IV emission level can no longer meet the subsequent National V emission regulations.

The original D10.34-40M engine has reached the National IV emission standard, but there is still a certain gap from the National V emission standard. The main reason is that the NOX emission of the engine is higher than the National V emission standard. The NOX emission is mainly due to the excessive combustion temperature of diesel in the engine. The main means are to suppress the combustion of the engine and the SCR after-treatment system to suppress the combustion of diesel in the engine to reduce NOX emissions; however, the suppression of combustion will inevitably lead to incomplete combustion, thus forming particulate matter.

The D10.34-50M engine is different from the traditional SCR engine in the way of dealing with emissions. When the engine is running, it saves a lot of urea for vehicles, and the theoretical heat value ratio of methanol and diesel is 2.14, while the price of methanol is only 42.5 of diesel. %, methanol blended combustion mode engine is more economical than the existing pure diesel engine, which is a trend of enterprise development at present.

Utility model content

In order to solve the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide an environmentally friendly methanol and diesel blended combustion engine.

The inventive idea of the present invention is: the original D10.34-40M engine has reached the National IV emission standard, but there is still a certain gap from the National V emission standard, mainly because the NOX emission of the engine is higher than the National V requirement. The main function of the EGR assembly is to install the EGR assembly at the engine water pipe of the engine exhaust system. The EGR assembly includes an EGR water inlet pipe, an EGR outlet pipe, an EGR inlet pipe, an EGR outlet pipe and EGR check valve, the EGR water inlet pipe is connected to the engine water pipe, the EGR water outlet pipe is connected to the water outlet of the engine thermostat, the EGR intake pipe is connected to the engine exhaust manifold, and the EGR outlet pipe is connected to the The engine intake manifold is connected, and an EGR check valve is arranged inside the connection between the engine intake manifold and the EGR outlet pipe; after the exhaust gas of the engine is cooled by the EGR inlet pipe of the EGR assembly, it passes through the EGR check valve, EGR The water outlet pipe and the EGR outlet pipe enter the engine intake manifold. In this way, the combustion of diesel in the engine is suppressed to reduce NOX emissions; however, the suppression of combustion will inevitably lead to incomplete combustion, thereby forming particulate matter. In order to reduce the PM of the engine exhaust, an exhaust after-treatment assembly is provided at the total exhaust pipe of the engine exhaust system, and the exhaust after-treatment assembly includes a DOC after-treatment package and a POC after-treatment package, and the DOC after-treatment package The air inlet of the DOC post-processing bag is connected to the main exhaust pipe, the air outlet of the DOC post-processing bag is connected to the air inlet of the POC post-processing bag, and the air inlet of the DOC post-processing bag is connected to the main exhaust pipe. There is a flange at the joint of the air pipe. The cooling water in the EGR assembly is the cooling water of the engine. Heat exchange is performed between the EGR outlet pipe, the EGR inlet pipe and the engine cooling water to reduce the outlet temperature of the EGR assembly and avoid the intake air temperature. Excessively high fuel consumption increases.

The D10.34-50M engine is different from the traditional SCR engine in the way of dealing with emissions. When the engine is running, it saves a lot of urea for vehicles, and the theoretical heat value ratio of methanol and diesel is 2.14, while the price of methanol is only 42.5 of diesel. %, the methanol blending mode engine is more economical than the existing pure diesel engine; the methanol fuel supply problem needs to be determined when installing the methanol injection device, and the methanol enters the engine through the methanol tank, methanol pump, filter and methanol injection device. These parts of the gas manifold are connected by alcohol-resistant pipes and tightly held by hoops. A methanol injection device is provided in the engine air intake system, the methanol injection device comprises a methanol tank, a methanol pump, a filter, a methanol common rail cavity, a connecting elbow and a methanol nozzle that are sequentially connected by pipelines The outlet of the methanol tank is connected to the inlet of the methanol pump, the outlet of the methanol pump is connected to the inlet of the methanol common rail cavity, the filter is arranged at the outlet of the methanol pump, and the outlet of the methanol pump is connected to the outlet of the methanol pump The inlet of the methanol common rail cavity is connected, and a connecting elbow is arranged at the outlet of the methanol common rail cavity, and the outlet of the connecting elbow is connected to a methanol nozzle, and the methanol nozzle is connected to the engine intake manifold.

An environment-friendly methanol and diesel blended combustion engine, including engine intake and exhaust systems, is characterized in that an EGR assembly is set at the engine water pipe of the engine exhaust system, and the EGR assembly includes an EGR water inlet pipe and an EGR outlet pipe. Water pipe, EGR inlet pipe, EGR outlet pipe and EGR check valve, the EGR water inlet pipe is connected to the engine water pipe, the EGR outlet pipe is connected to the water outlet of the engine thermostat, and the EGR inlet pipe is connected to the engine exhaust Manifold connection, the EGR outlet pipe is connected to the engine intake manifold, and an EGR check valve is arranged inside the connection between the engine intake manifold and the EGR outlet pipe;

The EGR assembly is an exhaust gas recirculation system.

A methanol injection device is provided in the engine air intake system, the methanol injection device comprises a methanol tank, a methanol pump, a filter, a methanol common rail cavity, a connecting elbow and a methanol nozzle that are sequentially connected by pipelines ;

An exhaust after-treatment assembly is arranged at the main exhaust pipe of the engine exhaust system, and the exhaust after-treatment assembly includes a DOC after-treatment package and a POC after-treatment package.

The outlet of the methanol tank is connected to the inlet of the methanol pump, the outlet of the methanol pump is connected to the inlet of the methanol common rail cavity, the filter is arranged at the outlet of the methanol pump, and the outlet of the methanol pump is connected to the methanol The inlet of the common rail cavity is connected, and the outlet of the methanol common rail cavity is provided with a connecting elbow, and the outlet of the connecting elbow is connected with a methanol nozzle, and the methanol nozzle is connected with the engine intake manifold.

The air inlet of the DOC post-processing bale is connected to the main exhaust pipe, the air outlet of the DOC post-processing bale is connected to the air inlet of the POC post-processing bale, and the DOC post-processing bale There is a flange at the connection between the air inlet and the total exhaust pipe.

The shell of the DOC post-processing bale is formed by connecting a section of hollow cylinder and a section of hollow cone, and the top of the hollow cone is the air inlet of the DOC post-processing bale A flange is provided at the air inlet of the DOC post-processing bale; a flap for fixing bolts is provided on the bottom edge of the hollow cylinder.

The shell of the POC post-processing bale is formed by connecting a section of hollow cylinder and a section of hollow cone, and the top of the hollow cone is the air outlet of the POC post-processing bale. A flange is provided at the air outlet of the POC post-processing bale; a flap for fixing bolts is provided on the bottom edge of the hollow cylinder.

The methanol control system includes: methanol injection device, methanol ECU, methanol line speed, speed sensor, throttle position sensor, water temperature sensor; methanol ECU controls the amount of methanol injection according to the engine speed and throttle opening, so it is necessary to monitor the engine speed and The throttle position, and the water temperature has a function of protecting the engine; the methanol speed sensor is an electromagnetic speed sensor, which is installed at the observation port of the engine flywheel housing; the D10. To collect information, take the voltage value at the throttle signal line of the original engine line speed and connect it to the control terminal of the methanol ECU; the water temperature sensor is installed at the engine outlet pipe; finally in the total exhaust of the engine exhaust system The pipe is provided with an exhaust gas post-treatment assembly, which includes a DOC post-treatment package and a POC post-treatment package to solve the emission of methanol combustion products.

By test, the beneficial effects of the utility model are:

1. The D10.34-50M engine is different from the traditional SCR engine in the way of dealing with emissions. When the engine is running, it saves a lot of urea for vehicles, and the theoretical calorific value ratio of methanol and diesel is 2.14, while the price of methanol is only diesel 42.5% of the methanol blended combustion mode engine is more economical than the existing pure diesel engine;

2. The cooling water in the EGR assembly is the cooling water of the engine. Heat exchange is performed between the EGR assembly and the engine cooling water to reduce the outlet temperature of the EGR assembly and avoid the increase in fuel consumption caused by excessive intake air temperature;

3. Install a DOC post-treatment bag and a POC post-treatment bag at the main exhaust pipe of the engine exhaust system to suppress the combustion of diesel in the engine, thereby reducing NOX and PM emissions.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment.

Fig. 2 is the structural representation of the utility model embodiment.

Figure 3 is a schematic diagram of the assembly structure of the DOC post-processing bale and the POC post-processing bale of the present invention.

Wherein, reference signs are: 1. Engine water pipe; 2. EGR water inlet pipe; 3. EGR outlet pipe; 4. EGR inlet pipe; 5. EGR outlet pipe; 6. EGR one-way valve; 7. DOC post-processing bag ; 8. POC post-processing large package.

Detailed ways

In order to clearly illustrate the technical features of the solution, the solution will be described below through specific implementation modes.

Example 1

Referring to Fig. 1, Fig. 2 and Fig. 3, the utility model is: a kind of environment-friendly methanol, diesel fuel blended combustion engine, comprises engine intake and exhaust system, is characterized in that, the engine water pipe 1 place of described engine exhaust system is arranged EGR assembly, the EGR assembly includes EGR inlet pipe 2, EGR outlet pipe 3, EGR inlet pipe 4, EGR outlet pipe 5 and EGR check valve 6, the EGR inlet pipe 2 is connected with the engine water pipe 1, the The EGR outlet pipe 2 is connected to the water outlet of the engine thermostat, the EGR intake pipe 4 is connected to the engine exhaust manifold, the EGR outlet pipe 5 is connected to the engine intake manifold, and the engine intake manifold An EGR check valve 6 is arranged inside the connection with the EGR outlet pipe 5;

A methanol injection device is provided in the engine air intake system, the methanol injection device comprises a methanol tank, a methanol pump, a filter, a methanol common rail cavity, a connecting elbow and a methanol nozzle that are sequentially connected by pipelines ;

An exhaust aftertreatment assembly is provided at the main exhaust pipe of the engine exhaust system, and the exhaust aftertreatment assembly includes a DOC aftertreatment package 7 and a POC aftertreatment package 8 .

The outlet of the methanol tank is connected to the inlet of the methanol pump, the outlet of the methanol pump is connected to the inlet of the methanol common rail cavity, the filter is arranged at the outlet of the methanol pump, and the outlet of the methanol pump is connected to the methanol The inlet of the common rail cavity is connected, and the outlet of the methanol common rail cavity is provided with a connecting elbow, and the outlet of the connecting elbow is connected with a methanol nozzle, and the methanol nozzle is connected with the engine intake manifold.

The air inlet of the DOC post-processing bag 7 is connected to the main exhaust pipe, the air outlet of the DOC post-processing bag 7 is connected to the air inlet of the POC post-processing bag 8, and after the DOC Handle the air inlet of bale 7 and the joint of total exhaust pipe to be provided with flange.

The shell of the DOC post-processing bag 7 is formed by connecting a section of hollow cylinder and a section of hollow cone. The air port is provided with a flange at the air inlet of the DOC post-processing bag 7; the bottom edge of the hollow cylinder is provided with a flap for fixing bolts.

The shell of the POC post-processing bag 8 is formed by connecting a section of hollow cylinder and a section of hollow cone. The air port is provided with a flange at the air outlet of the POC post-processing bag 8; the bottom edge of the hollow cylinder is provided with a flap for fixing bolts.

The undescribed technical features of the utility model can be realized by or using the prior art, so they will not be repeated here. Of course, the above description is not a limitation of the utility model, and the utility model is not limited to the above examples. Changes, modifications, additions or replacements made by ordinary skilled persons within the essential scope of the present invention shall also belong to the present invention.

Claims (5)

1. an environment-friendly methanol, burning motor mixed by diesel oil, comprise motor to enter, vent systems, it is characterized in that, at engine water tube (1) place of described engine exhaust system, EGR assembly is set, described EGR assembly comprises EGR intake pipe (2), EGR outlet pipe (3), EGR suction tude (4), EGR steam outlet pipe (5) and EGR one-way valve (6), described EGR intake pipe (2) is connected with engine water tube (1), described EGR outlet pipe (2) is connected with motor thermostat waterexit end, described EGR suction tude (4) is connected with described enmgine exhaust, described EGR steam outlet pipe (5) is connected with engine intake manifold, described engine intake manifold and described EGR steam outlet pipe (5) inside, joint arrange EGR one-way valve (6),

In engine aspirating system, arrange methyl alcohol injection apparatus, described methyl alcohol injection apparatus, described methyl alcohol injection apparatus comprises the methanol tank be connected by pipeline successively, methanol pump, filter cleaner, methyl alcohol common rail chamber, bridge piece and methyl alcohol nozzle;

The total air escape pipe place of described engine exhaust system is provided with exhaust aftertreatment assembly, and described exhaust aftertreatment assembly comprises the large bag of DOC reprocessing (7) and the large bag of POC reprocessing (8).

2. burning motor mixed by environment-friendly methanol according to claim 1, diesel oil, it is characterized in that, the outlet of described methanol tank is connected with methanol pump import, described methanol pump outlet is connected with described methyl alcohol common rail chamber import, described filter cleaner is arranged on described methanol pump outlet port, described methanol pump outlet is connected with described methyl alcohol common rail chamber import, the outlet port in described methyl alcohol common rail chamber arranges bridge piece, described bridge piece outlet port connects methyl alcohol nozzle, and described methyl alcohol nozzle is connected with engine intake manifold.

3. burning motor mixed by environment-friendly methanol according to claim 1, diesel oil, it is characterized in that, the suction port of the large bag of described DOC reprocessing (7) is connected with total air escape pipe, the air outlet of the large bag of described DOC reprocessing (7) is connected with the suction port of the large bag of described POC reprocessing (8), is provided with flange at the suction port of the large bag of described DOC reprocessing (7) and total air escape pipe joint.

4. burning motor mixed by environment-friendly methanol according to claim 1, diesel oil, it is characterized in that: the housing of the large bag of described DOC reprocessing (7) is connected as a single entity by the cone of the cylindrical body of one section of hollow and one section of hollow and is formed, the vertex of a cone of the cone of described hollow is the suction port of the large bag of described DOC reprocessing (7), is provided with flange at the suction port place of the large bag of described DOC reprocessing (7); The cylindrical bottom margin of described hollow is provided with the turnover panel of fixing bolt.

5. burning motor mixed by environment-friendly methanol according to claim 1, diesel oil, it is characterized in that: the housing of the large bag of described POC reprocessing (8) is connected as a single entity by the cone of the cylindrical body of one section of hollow and one section of hollow and is formed, the vertex of a cone of the cone of described hollow is the air outlet of the large bag of described POC reprocessing (8), is provided with flange at the air outlet place of the large bag of described POC reprocessing (8); The cylindrical bottom margin of described hollow is provided with the turnover panel of fixing bolt.