JPS61286532A - Mechanism of cylinder having two pistons and fuel saving operation method for engine employing said mechanism - Google Patents

Abstract

PURPOSE:To provide an engine which is light and small, and reduces fuel consumption and production of vibration, by a method wherein two cylinders are positioned facing each other within one cylinder, and exhaust ports are respectively formed in two end parts and the central part of the cylinder. CONSTITUTION:Two cylinders 2 are slidably contained in a cylinder 1, and the two pistons 2 are connected in parallel to each other to a crank shaft 6 through their respective piston rods 5 so that the pistons are moved symmetrically to each other. An intake and exhaust port, open to a combustion chamber formed between the piston 2, is formed in the central part of the cylinder 1, and intake and exhaust ports 3, open to a combustion chamber formed between the pistons 2, is formed in the central part of the cylinder 1, and intake and exhaust ports 3, open to a combustion chamber partitioned between each piston 2 and a cylinder head, are formed in both end parts of the cylinder 1. A power is generated by executing motion, in which a phase is different 180 deg. between the central combustion chamber and each of the combustion chambers at both ends, through movement of the piston 2.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention achieves an intake amount and an exhaust amount equivalent to the conventional 4 cylinders and 4 pistons by providing two pistons with the same inner diameter and stroke in one cylinder. It relates to a cylinder mechanism that allows combustion, and a method that uses that mechanism to reduce fuel consumption by resting or working the combustion chamber of a part of the engine depending on the required output. be.

A conventional cylinder has one piston and one chamber (
If a larger amount of suction and evacuation was required, the number of cylinders had to be increased, and the weight increased. It had the disadvantage that it increased in size and became larger in size.

Regarding fuel-saving driving methods, there have been methods in the past to allow the combustion chamber to rest by stopping the supply of fuel to a part of the combustion chamber, but it is not possible to compress the intake air even in a combustion chamber that is not in use. This resulted in drawbacks such as output loss and vibration.

The present invention has been devised to eliminate these drawbacks.

(A) Referring to FIG. 1, which is a sectional view schematically showing the mechanism of a cylinder having two pistons, the piston rod ( 5) and are connected by Krasok (6).

When these two pistons (2) move toward both ends of the cylinder, they perform a compression action at both ends and a decompression action at the center, and conversely, the two pistons (2) move toward the center of the cylinder. If you move it, it will compress the center and reduce the pressure at both ends.

Depending on the combination of this principle and the timing of opening and closing of the inlet (3) and outlet (3), and depending on the material being used, it can be used for various pumps and engine starters, or both can coexist. It is a high-performance cylinder that can

(B) FIG. 2 is a cross-sectional view schematically showing a composite engine having a combustion chamber of 4 strokes at both ends and a 2 stroke at the center, as an example of a fuel-saving operation method for an engine equipped with the above mechanism. To explain this, this figure shows the two pistons (2) compressing the air-fuel mixture in the combustion chambers (7) at both ends and then exploding.

The two pistons (2) are moved toward the center of the cylinder by the explosion, and originally the mechanism was to compress and explode the air-fuel mixture in the central combustion chamber (8), but as a feature of the present invention, the pistons (2) are large. By closing the supply valve (11) and opening the exhaust bypass valve (12) except when output is required, the combustion chamber (8) is allowed to rest, thereby reducing fuel consumption.

Therefore, when a large output is required, the supply valve (11)
By opening the exhaust bypass valve (12) and closing the exhaust bypass valve (12), the combustion chamber (8) can be operated.

The two pistons (2) in the center are the crank (6)
If the scavenging air in the combustion chambers (7) at both ends and the central combustion chamber (8) are working, the scavenging air and Inhale at the same time.

Thereafter, the two pistons (2) move toward the center again and suck the air-fuel mixture into the combustion chambers (7) at both ends.

This repetition allows fuel-saving operation of an engine with two pistons per cylinder.

By implementing the present invention, (b) It can be made lighter and smaller.

(b) It is possible to combine a 4-stroke and 2-stroke, an engine and a compressed air pump, etc. in one cylinder.

(c) There is little vibration due to the symmetrical movement.

(d) The central combustion chamber can have a high compression ratio.

Effects such as this can be obtained.

[Brief explanation of drawings]

FIG. 1 is a sectional view schematically showing an embodiment of the present invention. FIG. 2 is a cross-sectional view schematically showing a fuel-saving driving method. 1 is cylinder 2 is the piston 3 is the inlet or outlet 4 is a variable support shaft for the piston rod 5 is the piston rod 6 is the crank 7 is the combustion chamber at both ends 8 is the central combustion chamber 9 is the intake port 10 is the exhaust port 11 is the supply valve 12 is the exhaust bypass valve 13 is exhaust bypass 14 is the intake valve 15 is the exhaust valve 16 is the spark plug

Claims (1)

[Claims] 1. A cylinder mechanism characterized by having two pistons in one cylinder, and having an inlet and an outlet at both ends and the center of the cylinder, respectively. 2. An engine with the above mechanism is equipped with an exhaust bypass and an exhaust bypass valve, as well as a valve at the air-fuel mixture or fuel supply port, and by opening and closing the valve, part of the combustion can be prevented except when necessary. How to drive to rest the room and save fuel.