JP3002922U - Copper catalytic converter for exhaust gas purification - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a low-cost and durable catalyst compactor that can effectively utilize the excellent catalytic action of copper while being easy to install and ready for many automobile models. This will prevent exhaust gas pollution and reduce fuel consumption. [Structure] A copper rod-shaped body having a large number of irregularities or through-holes inside a copper cylindrical body in which the outer wall is in close contact with and slides on the inner wall of the manifold connected to the cylinder head (a collar is formed on one end). Build.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a catalytic converter used to improve the combustion efficiency of an internal combustion engine in an automobile or to reduce harmful components in exhaust gas.

[0002]

[Prior art]

 As a means of removing harmful components such as carbon monoxide, nitric oxide, and gaseous hydrocarbons remaining in the exhaust gas of automobiles, install catalysts such as platinum, palladium, and copper in the intake and exhaust passages. Has already been carried out, and in general, a "three-way catalytic converter" to be attached near the muffler of the exhaust pipe is well known, but in other cases, "a highly purified copper is basically used as shown in US Pat. No. 4,023,361". Used for the catalyst converter. This is a "cylindrical with a spirally woven outer surface" product that can be installed "through the intake / exhaust manifold pipes", but it is actually between the engine block and the intake / exhaust manifold. It has been proposed that it is housed in a multiple-type flat frame that is sandwiched by a gasket.

[0003]

[Problems to be solved by the device]

 The above-mentioned three-way catalytic converter has a very dense structure and uses platinum, so it is expensive, and at the same time, it has a large resistance value that obstructs the flow of gas, so it should be installed only in one or two places on the exhaust pipe near the exhaust hole. I can't. In addition, it is extremely difficult to attach copper catalysts to the U.S. patents to the intake and exhaust manifolds of automobiles, so it is necessary to incorporate them in new car production lines. There is a problem in that manufacturing line that cannot be easily dealt with. An object of the present invention is to solve such a problem.

[0004]

[Means for Solving the Problems]

 A typical example of the present invention is as shown in FIG. 1, which is shown in FIG. 2, in which the outer wall (3A) is connected to the inner wall (2A) at the end of the manifold (2) connected to the cylinder head (1) of the internal combustion engine. ) Is formed by arranging a copper rod-shaped body (4) having a large number of concaves and convexes (4A) or through holes (4B) on the inside of a copper tubular body (3) that allows close contact and sliding.

The actual size of the intake pipe is slightly larger according to the dimensions of the intake / exhaust manifold, and particularly for exhaust pipes, one end of the copper tubular body (3) is provided with an outward facing collar ( 3B) is to be formed. The flange (3B) has a rear surface shaped according to the shape of the inner wall portion of the end of the manifold (2), and the edge is formed as sharp as possible.

The unevenness (4A) provided on the copper rod-shaped body (4) may be, for example, a spirally woven spiral shape, and the through holes (4B) are about 5 for intake and about 3 for exhaust. Is appropriate. Such a copper rod-like body (4) is rigidly installed from the end on the major axis side of the inner wall of the (substantially rectangular) copper-made tubular body (3).

The copper catalytic converter of the present invention having the above-described structure does not use any other special parts, and the cylinder head (5) is inserted into the manifold (2) while remaining in the manifold (2). 1).

[0008]

[Action]

 Since the copper catalytic converter of the present invention corresponds to each intake / exhaust manifold, it has a much greater chance of contact for intake / exhaust air compared to the one attached to the intake / exhaust pipes collected in one, and its air The resistance is small.

Further, the size (shape) thereof is only two kinds for intake and exhaust, and since it is the same as the shape of the inner diameter of the manifold (2), it is extremely compact and robust. Even cars of this type can be installed stably without any problems by inserting them into the manifold and using existing gaskets as they are.

Due to such a structure, after installation, it is resistant to dirt and vibrations, exhibits extremely excellent stability and high durability, and its efficacy is also due to the inner wall made of copper of the tubular body (3) and the rod-shaped body. The concave convex surface and the through-hole surface of (4) are added, and the circulation effect of the air flow is also added, so that the catalytic function of copper can be effectively extracted in an ideal form.

The outward flange (3B) provided at one end of the tubular body (3) has a function of preventing the tubular body (3) from sliding into the manifold (2) after being installed. , Especially on the exhaust side.

[0012]

Example 1 In the copper tubular body (3), the tube length was 25 mm, the tube width outer diameter was 58 mm, the tube width inner diameter was 54 mm, the tube height outer diameter was 29 mm, and the tube height inner diameter was 25 mm. A copper rod (4) with a diameter of about 9 mm is laid across in the width direction, and a screw-shaped helix with irregularities and a pitch of 1.5 mm is provided on the rod (4) and a through hole (4B) with a diameter of 3 mm is provided. Five pieces are provided at intervals of 10 mm. This is the catalytic converter for the intake manifold.

[0013]

Example 2 Similarly, in the copper tubular body (3), the tube length is 21 mm, the tube width outer diameter is 40 mm, the tube width inner diameter is 36 mm, the tube height outer diameter is 26 mm, and the tube height inner diameter is 22 mm. A copper rod (4) with a diameter of about 9 mm is laid across the width of the rod, and the rod (4) is provided with a screw-shaped helix with a difference in unevenness and a pitch of 1.5 mm, and a through hole with a diameter of 3 mm. Three (4B) are provided at a pitch of 10 mm. Further, at one end of the tubular body (3), a flange (3B) that spreads outward by about 2 mm is provided, and this is used as a catalytic converter for an exhaust manifold.

[0014]

[Effect of device]

 Thus, according to the present invention, it has a very compact and robust form, and can be easily and stably attached to all individual pipe openings regardless of whether the manifold is a counter flow type or a cross flow type. However, it does not require special parts, and it can be used in ready-made vehicles. The large contact area with intake / exhaust simultaneously provides low resistance and high strength and durability, and relatively low cost. It has the effect of efficiently exhibiting the catalytic action of pure copper over a long period of time.

[Brief description of drawings]

1 is a sketch of an example of the present invention.

FIG. 2 is a sectional view showing a state in which an example of the present invention is installed.

[Explanation of symbols]

1 ………… Cylinder head 2 ………… Manifold 2A ………… Inner end wall 3 ………
Copper tubular body 3A ………… Copper tubular outer wall 3B ……… Tsuba 4 ………… Copper rod 4A ……… Asperities 4B ……… Through hole 5 ……… Gasket

Claims (2)

[Scope of utility model registration request] 1. A copper rod-shaped body having a large number of irregularities or through-holes is provided inside a copper cylindrical body in which an outer wall is in close contact with and slides on an inner wall of an end portion of a manifold connected to a cylinder head of an internal combustion engine. A copper catalytic converter for purifying exhaust gas, which is characterized in that 2. The copper catalytic converter for purifying exhaust gas according to claim 1, wherein an outward flange is formed on one end of the "copper tubular body".