JPH01216029A - Engine - Google Patents

Abstract

PURPOSE:To enable fetching of a power, generated by an engine, with high efficiency, by a method wherein a horizontal and arcuate hole is formed in the end part on the crankshaft side of a connecting rod through which a piston and a crank shaft are intercoupled, and a crank pin is inserted in and supported to the hole. CONSTITUTION:In a connecting rod 2 through which a piston 3 reciprocatively engagedly inserted in a cylinder 1 and a crank shaft 4 are intercoupled, an end part on the crank shaft 4 side forms a large part, and a hole 7 is formed therein. The hole 7 is formed with a left part containing a hole part in the same arc of a circle as that drawn by a bearing 5 engaged with a crank pin 6 through rotation of the crank shaft 4 and a right horizontal part connected to the left hole part, and a bearing 5 is slidably engaged with the hole 7. This constitution improves energy efficiency in a way that the crank shaft 4 is rotated in a state in which the piston 3 is located in a highmost position (during completion of a compression stroke) and thereafter an expansion stroke is started.

Description

[Detailed Description of the Invention] In a conventional engine, the energy efficiency for rotating the crankshaft at top dead center is zero, and as the crankshaft rotates from top dead center, the energy efficiency for rotating the crankshaft is zero. The energy efficiency is gradually improving! ? The energy efficiency for rotating the crankshaft is highest between top dead center and bottom dead center.On the other hand, top dead center is the start of the explosion stroke where the explosion pressure is strongest, and the piston moves downward during the explosion stroke. The explosion pressure gradually weakens.

Therefore, energy efficiency is poor.

The present invention uses a new type of connecting rod to rotate the crankshaft while the piston is at its highest position (completion of the compression stroke), and starts the explosion stroke after reaching a position far from the conventional top dead center. This improves energy efficiency.

Also, in the present invention, since the evacuation time is longer, more exhaust gas is consumed, thus resulting in better combustion, stronger explosive power, and cleaner exhaust gas.

To explain the figures, 1 is the cylinder, 2 is the new connecting rod fixed to the piston 3, 4 is the crankshaft, 5 is the bearing fitted into the crank pin 6, 7 is the hole made by piercing the connecting rod 2, The width of the hole 7 is slightly wider than the diameter of the bearing 5, and the left half of the hole 7 is separated by the rotation of the crankshaft 4 from the same arc drawn by the bearing 5 and the horizontal part on the left side. The right half of the hole 7, on the other hand, is horizontal.

Note that the bearing 5 is placed in the hole 7.

The present invention consists of the structure as described above, and has the structure shown in Fig. 1! ! (from the top dead center position of a conventional engine) to the crankshaft 4
has rotated about one-eighth in the direction of the arrow (as shown in Figure 3)
The explosion process begins. In this I'll (darkness from the state in Figure 1 to the state in Figure #43), the bearing 5 is in hole 7.
It moves in the direction of rotation of the arrow inside the arc of
In this case, it is depicted by the arc of the hole 7 and the movement of the bearing 5 (since the arcs are the same, the conloft 2 and piston 3 do not move down.

After that, when the bearing 5 enters the horizontal part of the left half of the hole 7, the explosion pressure causes the bearing 5 to
is pushed by the connecting rod 2 and rotates together with the crankshaft 4 in the direction of the arrow, resulting in the state shown in Fig. 4! ! The explosion stroke is completed at W!t (about the bottom dead center of a conventional engine). During this period (from the state shown in Figure #43 to the state shown in Figure 4), the bearing 5 moves in the horizontal portion of the left half of the hole 7 from the right end to the left end, and then from the left end to the right end. Pass through the arc of 7 to the position shown in Figure 4. Thereafter, when the connecting rod 2 is pushed up by the bearing 5 by about 5/8 rotations of the crankshaft 4 in the direction of the arrow, the piston 3 is also pushed up in the same way, passing through the state shown in FIG. The exhaust stroke ends in the state shown in Figure 3. This l1l(
Between the state shown in Fig. 4 and the state shown in Fig. 3), the bearing 5 moves from the left end to the right end inside the right half of the hole 7! ! +, and after moving from the right end to the left end, it passes through the arc of hole 7. While the bearing 5 passes through this arc, the connecting rod 2 and the piston 3 do not descend, just like in the explosion stroke.After this, the crankshaft 4 and the bearing 5 rotate, and the connecting rod 2 is pushed down by the bearing 5, and at the same time the piston 3 also moves down, completing the suction stroke in the state shown in FIG.

After this, when the connecting rod 2 is pushed up onto the bearing 5 by a half turn of the crankshaft 4 in the direction of the arrow,
The piston 3 is also pushed up in the same way, and the suction stroke ends in the state shown in FIG. During this period (from the state shown in FIG. 4 to the state shown in FIG. 1), the bearing 5 moves in the right half of the hole 7 from the left end to the right end, and then moves to the right end.

As explained above, according to the present invention, the crankshaft 4 rotates when the piston 3 is at the highest position II (at the completion of the compression stroke), and rotates the crankshaft away from the conventional top dead center. Since the rice is placed in the most energy efficient position, the explosion pressure is strongest at the beginning of the explosion stroke, which is the most energy efficient position.

Also, in the present invention, since the evacuation time is longer, more exhaust gas is used, resulting in better combustion, stronger explosive power, and cleaner exhaust gas.

[Brief explanation of the drawing]

The drawings show one embodiment of the engine of the present invention, and FIG. 1 is a partially cross-sectional schematic side view showing the state at the completion of the compression stroke, FIG. 2 is a partially cross-sectional front schematic diagram of FIG. wS1, and FIG. The figure is a schematic side view showing the respective states at the start of the explosion stroke, the completion of the exhaust stroke, or the start of the suction stroke, with a part cut away;
FIG. 4 is a schematic side view, partially in cross section, showing the respective states at the completion of the explosion stroke or the start of the exhaust stroke, or at the completion of the suction stroke or the start of the compression stroke.

Claims (1)

[Claims] An engine characterized by horizontal and arc-shaped holes cut into the connecting rod fixed to the piston.