JPS588217A - Exhaust corpuscle purifier for diesel nengine - Google Patents

Abstract

PURPOSE:To heighten durability and safety as well as to simplify construction, by governing both speeds in the actuating timing of throttling device and in the timing of fuel injection device. CONSTITUTION:A fuel injection valve 32 for gasoline engine EFI use is installed by way of injecting fuel at the upstream side of a collecting material 31 and also a flame stabilizing ring 33 is installed by way of stabilizing flames produced by the injected fuel, while a throttling device consisting of a throttle valve 6 throttling an engine suction passage is installed in addition, and thereby both speeds in the actuating timing of the throttling device and in the fuel injection timing of a fuel injection device are governed in order. Then, when the collecting material 31 is so judged that it is in the regenerating timing, the suction passage is throttled by the throttle device and fuel is injected by the fuel injection valve 32 in which the fuel injection timing is controlled, forming flames and thereby burning and incinerating the exhaust corpuscles gathered in the collecting material 31.

Description

DETAILED DESCRIPTION OF THE INVENTION - Regarding the exhaust gas treatment device of a diesel engine manufactured by the present invention, more specifically, it deals with the exhaust gas treatment device of a diesel engine manufactured by the present invention. (b) is collected on an appropriate collection material using a physical method, and
The exhaust mold particles are periodically discarded and the collection material is regenerated. In most cases, these flammable particulates are collected,
Conventionally, the following methods have been known for incinerating the collected mold particles to regenerate the collection material.9 However, each method has the following drawbacks.

1) A method of increasing the temperature of the exhaust gas and incinerating the exhaust particulates by increasing the intake system of the diesel engine However, in the low load range, the exhaust temperature does not rise sufficiently, making it impossible to incinerate exhaust particulates and regenerate the collection material.

(F) A method in which an oil burner is installed in the exhaust system of a diesel engine and the temperature of the exhaust gas is raised to a level where exhaust gas particles are burned. , the equipment becomes complicated,
The cost is also high, and the flow of exhaust gas is drastically reduced,
If one side of the flow is stopped for incineration and regeneration, the equipment becomes even more complex.

(3) A method in which an electric heater is attached to the entire surface of the collecting material to combust the exhaust particulates attached to the surface of the collecting material, and the downstream particulates are self-combusted using this as a heat source.

This method requires electric heaters to be attached to the entire surface of the collection material, which consumes a lot of power. It is necessary to make it dual, stop one flow, and burn it with electricity 7-169, and if the device is complicated *Lj cost will also be high◇ The circuit line of the present invention eliminates the above-mentioned drawbacks, has durability
We would like to provide an exhaust particulate purification device for diesel engines with excellent safety, simple structure, and low dust.

In order to achieve such an object, the present invention provides an exhaust particulate purification device for a diesel engine having a collecting material for exhaust particulates in the exhaust gas, in which fuel is supplied upstream of the collecting material. The injection means and the means of stabilizing the large flame generated by the injection are acidic, trap the engine intake passage, throttle the air, throttle the intake passage and raise the exhaust temperature. The flame is formed by injecting fuel at nine different locations.

As a means for injecting fuel, it is convenient to use a fuel injection valve, which is normally used in electronically controlled fuel injection systems (LIFI) of gun engines. The fuel used may be the same as that used for combustion in a diesel engine. It is convenient to provide a dermal plug (or sparter bladder) in the fuel injection area and heat that area in advance. As a means for stabilizing the flame generated by fuel injection, a flame stabilizing ring, a honeycomb filter, etc. can be used.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In II1 Figure W-, l is the diesel engine body, 2
wax cooling fan; 3 is an intake manifold; 4 is an exhaust manifold; 5 is a fuel injection pump; 6 is a nine throttle valve installed in the intake passage; 9, and is uniquely connected to the pump through the diamond 7-diameter valve 1G and the vacuum pump 11 through the pump pipe 11.

19. Negative pressure valve 1 (connected to microcombi, -J (CPU) 141C via d wiring 13, vhJe, therefore, when a command signal is input from CPU 14 to negative pressure valve 1 OK through wiring 13, this The vacuum pump v+i of the negative fEI9 replacement valve lO opens, and the negative pressure from the vacuum pump 12 is transmitted to the diaphragm valve 9 through the piping 11, and the throttle valve 6 is operated to close via the droplet 8. 11
- to do. This is controlled by a throttle means that controls the intake passage.

Note that the sat of the throttle valve 6 is detected by the suit torque sensor 15, and is transmitted through the wiring 16 to [Ci''U14
The fuel injection pump S is transmitted to the fuel injection valve of each cylinder through the fuel pipe 80! The IK was supplied uniformly, and the fuel was injected into the diesel engine's combustion chamber, and the diesel engine was activated.

A collection material (trapper) container 30 is attached to the 11F11Lff engineering hold 40th waterfall sO exhaust pipe.

Supplementary material (trap material) in g of this trap content @SO
31 is aro (Figure 1 and 411). This trap material 3
As No. 1, a well-known 7-ohm electric wire can be used. That is, the trap material 31 has a three-dimensional mesh structure,
In the present invention, it is possible to collect exhaust particulates between the ropes through which air gas can flow and meet the exhaust gas. Means are provided for injecting 31 upstream KII charges and means for stabilizing the large flame created by the injected 9 fuels. In the gas embodiment, a jet for BFI of a gasoline engine is used as a means for injecting fuel.
Lap# Injector 3 is dissipated and a flame stabilizing element 33 is provided as a means to stabilize the flame (Q). That is, the fuel injection valve 32. As shown in the gi diagram, the fuel pipe 34 and office 1s.

It is connected to the fuel pump 5 via the pressure regulator 36, and fuel is supplied thereto, as well as the wiring $? ll"L:
CPUl4Klil! 1fLCf) The fuel injection timing is controlled by the CPU 14. On the other hand, as shown in FIG.
! The flow end is connected to the conical shape g 30 on the upstream side of the traverse volume 130
I looked into the inside of M, and there was wax on the bottom of that! The attachment is a nine-circular ring, and the thickness of the semi-universal ceramic of the circular ring should be as thick as possible for exhaust resistance. 19. A globe ladder 39 (or spark plug) for igniting the injected fuel is installed near the flame formation region, that is, the flame holding *yirss! The low plug 39 is connected to the CPU 14 via a wiring 40, and the operation of the glow radar 39 is controlled by the CPU 14.
is an example of ollt-, which is a power source for heating the globe ladder, and injects nine fuels to save II & 1y/m3! j! ILI
It is evaporated and ignited by the globe ladder. In addition, a negative pressure region 38 is formed outside the pipe line 38, which is convenient for stabilizing the large Il&%AO. An aS injection nozzle 42 is provided in place of the fuel injection valve;
A honeycomb filter 43 is provided as a means to stabilize the temperature. Other structures are similar to the 1iE2FjA embodiment. As is well known, the honeycomb filter 43 has a nest-shaped cross section and has a large number of holes continuous in the longitudinal direction.The injected fuel is vaporized while passing through the holes, and the ignition is promoted by the globe ladder 39. Due to the throttling, the temperature of the honeycomb filter 43 itself increases to 150° C. or higher, and becomes vertical enough to vaporize the fuel (Ii oil).

In the present invention, the above-mentioned throttle means throttles the air passage 19, increases the temperature of the exhaust gas, injects fuel under good conditions, forms a flame, and burns the exhaust particulates collected by the collecting material 31. , because it will be incinerated.

In order to control the operation of the throttle means, fuel injection valve [L dummy prada 39, etc.], the operating conditions of the engine and the state of exhaust gas are detected and input to the CPU 14. That is, IIIiglK>? , go is the engine load, 51
is the engine low temperature, S2 is the exhaust pressure in front of the trapper, 53 is the exhaust gas temperature in front of the trapper, and II4 is the temperature inside the trapper, which is input to pls-t#reePU]4.

Figure 1121 shows the flow m showing the operation of regenerating the trapper container.
s! It is. First, as a condition, the engine water temperature (ISI
), engine load (![)), engine rotational speed, exhaust gas pressure (exhaust gas temperature in front of the trapper (!$3), etc. are input as information to the PU 14 (Fig. 1).

The regeneration time is determined mainly based on the back pressure (52) of the exhaust gas. That is, emissions from diesel engines1
The exhaust gas flows as shown by the arrow P (No. 11), and 1fL of fine particles are collected by the trapper material 31, and as the fine particles accumulate, the exhaust gas pressure at the upper waterfall of trapper volume 30 increases. Once the pressure is determined to be at 0 regeneration time, which is an indicator of particulate build-up, check the engine water temperature (51).
6. Rounding to prevent playback from starting later. &,
When the engine water temperature is 110'>T>80℃, the throttle ring is turned off and the suction 1ILj1 is performed. As a result, if the exhaust temperature (44) in front of the trapper exceeds 150°C, the glow prada will inject fuel after 3 seconds and inject fuel for 030 seconds, causing the temperature inside the trapper to rise to 600°C. If the limit is exceeded, stop fuel injection, turn off G0-Buddha 3g, and stop throttling. When the IBIm in the tram does not exceed 600°C, fuel injection is performed for another 60 times, and when the fuel injection is stopped, the globe ladder 39 is turned off, and after 2 minutes, the four-stroke ladder is stopped.

Among them, it is convenient to perform the above-mentioned action at engine idle WI#. When the engine is hot, the amount of intake air is small, so the flame is less affected by exhaust pulsation.

[Brief explanation of the drawing]

The first diagram is a schematic diagram of a nine-deal engine employing the present invention, the second is a cross-sectional view of the trapper vessel, the third is an enlarged view of the portion indicated by the summer in Figure xi, and the fourth embodiment of the 41st line The first cross-sectional view of the trapper IIm shows the process of regenerating the trapper container.
6i at waterfall tLiI111I. l... Diesel engine body, 6...
・Suit Torpulp, 30...Trazuha volume 1!
,! 11... Collection material, [1... Fuel injection valve, 33... Flame holding ring, 3S) --- Globe ladder or spark plug, 42... ...Fuel injection nozzle, 43...2 cam filter. Applicant for the license: Tosei Jidosha Kogyo Co., Ltd. Tatami Koide 1st generation Sanninben 1st master Illustration by Mitsuki Roben Zuishi 1

Claims (1)

[Claims] 1. Dee having a collection material for air and mold particles, the ceremonial injector 11 can be placed on the upstream side of the collection material, and the flame generated by the injected fuel can be A means of stabilization is provided, and the diesel engine
Place a step on the air intake passage to tighten the air intake passage. A device for purifying exhaust particulates from a diesel engine in which the timing of fuel injection of an injection means is controlled.