JPS59211712A - Exhaust pipe of internal-combustion engine - Google Patents

Abstract

PURPOSE:To accelerate exhaust operation by inserting and fixing a venturi pipe having spiral stripes cut onto the inner peripheral surface, at a proper position in an exhaust pipe, and increasing the flow rate of exhaust gas and generating superflow. CONSTITUTION:An exhaust pipe 3 continuously bent in three directions is connected at the exhaust port 2 of a cylinder 1, and a venturi pipe 5 whose center part of the inner peripheral surface is formed into a narrow passage, and whose opened ports on the both sides are widened, and further having spiral stripes 4 cut over the whole surface of the inner peripheral surface is inserted and fixed into the exhaust pipe 3 at the position close to the exhaust port 2. If necessary, said venturi pipe 5 may be inserted and fixed into the exhaust pipe 3 at the position close to a tail pipe 6 installed at the rear edge of the exhaust pipe 3.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an exhaust pipe of an internal combustion engine, and a Venturi pipe with spiral grooves carved on the inner circumferential surface is placed in an appropriate position within the exhaust pipe, preferably in the vicinity of an exhaust port. It is believed that the problem is that it got stuck in the exhaust pipe close to the tail pipe due to the need for some trouble.
The purpose of this system is to increase the flow rate of exhaust gas and create a vortex to promote exhaust gas, as well as to create negative pressure within the exhaust port to suck in the exhaust gas.

Conventionally, the exhaust suction effect of internal combustion engines was promoted by grouping the exhaust pipes together, making it impossible to exhaust air from each single cylinder. Since the exhaust port is formed with a trumpet-shaped cross section, the exhaust gas entering the exhaust pipe connected to the exhaust port expands, significantly reducing the flow velocity and reducing the exhaust effect.

The present invention eliminates such drawbacks, and an embodiment thereof will be described in detail with reference to the drawings.
When the exhaust pipe (3) bent in three directions is fully connected to 2) and the center of the inner circumferential surface is made a narrow passage, the openings on both sides are expanded and a spiral strip (4) is formed over the entire inner circumferential surface. ) is inserted and fixed into the exhaust pipe (3) at a position close to the exhaust pipe (3), and if necessary, the venturi pipe (5) is inserted into the rear end of the exhaust pipe (3). A Venturi pipe (5) is fitted and fixed into the exhaust pipe (3) located close to the Kedazol vibe (6), where (7) is the vaporizer, (8) is the exhaust valve, and (9) is the exhaust pipe (3). The intake valve, (lO) is a plug, (11) is a piston, (12) is a throttle valve, and (+3+ is a tension spring, one end of which is fixed to the front end of the exhaust pipe (3) and the other end is It attaches to the casing of an internal combustion engine, etc., and becomes an exhaust pipe ().
This ensures that the air outlet (2) is connected to the exhaust port (2). In the illustrated case, the venturi pipe (5) is fitted and fixed to the exhaust pipe (3) connected to a single cylinder, but it can of course be applied to two cylinders, four cylinders, or V-type cylinders.

Since the present invention is constructed in this way, when the exhaust gas generated in the cylinder (1) flows into the exhaust pipe (3) from the exhaust port (2), it is located close to the exhaust port (2). ) The flow velocity can be increased by the venturi tube (5) provided in the venturi tube 1j5. ), Since it flows out along the spiral line provided on the m-plane inside 6Q along 4), the direct current air f & t $ at the time of inflow.
Make it into a vortex flow, that is, increase the flow velocity to create a Venturi tube (5)
pass through the inside. Therefore, the exhaust gas in the cylinder tll, which has a negative pressure near the exhaust port (3), is sucked in and the exhaust gas is promoted. 'Also, there is an exhaust pipe (3) close to the tail pipe (6).
), if a venturi pipe (6) is installed in the exhaust pipe (3)
At the end of the tailpipe (6), the flow velocity of the exhaust gas is increased again and becomes a vortex with even faster rotation, rapidly flowing through the tailpipe (6).
The gas is then discharged to the tail pipe (6), which has a narrow inner diameter, and the flow rate is increased again while exhausting the gas.

As described above, the present invention is a useful invention that has a strong and durable structure, is easy to manufacture, and is inexpensive.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing the implementation state of the present invention, and FIG.
The figure is a longitudinal sectional front view showing a state in which a venturi pipe according to the present invention is fitted into an exhaust pipe.

Claims (1)

[Claims] An exhaust pipe for an internal combustion engine, which is made by fitting and fixing a Venturi pipe with spiral grooves carved into the internal circumferential surface into a proper position within the exhaust pipe.