JPS6436510U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram with a partial cross section of a conventional small gasoline engine. Figure 2 is a diagram of the valve drive structure of a conventional small gasoline engine. FIG. 3 is a diagram of the valve drive structure of the small gasoline engine according to the present invention. FIG. 4 is a schematic structural diagram of an electromagnetic solenoid used in the present invention. 1 is the cylinder, 2 is the intake valve, 3 is the exhaust valve, 4 is the intake pipe, 5 is the exhaust pipe, 6 is the crankshaft, 7 is the piston, 8 is the timing pulley,
9 is a toothed belt, 10 is a camshaft, 11 is a rocker arm, 12 is a rocker shaft, 13 is a cam, 14 is a cylinder head, 15 is a return spring, 1
6 is a spark plug, 17 is a solenoid, 18 is a fixed iron core, 19 is a movable iron core, 20 is a coil, 21 is a support pin, and 22 is a connector.

Claims (1)

[Claims for Utility Model Registration] (1) In a valve mechanism for a small internal combustion engine that has an intake valve and an exhaust valve, current is passed through a coil to drive the intake valve or to drive both the intake valve and the exhaust valve. A small internal combustion engine characterized by the attraction and repulsion generated by the electromagnetic force generated when (2) The small internal combustion engine according to claim 1, which is a registered utility model, characterized in that an electromagnetic solenoid is used to drive the intake valve and the exhaust valve, and the engine is operated directly or indirectly through a rocker arm, a link, etc. (3) a detector that directly or indirectly detects the rotational speed of the crankshaft, which is the rotational output shaft;
Equipped with a control device that switches the opening and closing timing of the intake and exhaust valves according to the rotational speed of the crankshaft, and at least controls the opening and closing timing of the intake and exhaust valves with respect to the angle of the crankshaft or the vertical position of the piston, depending on the rotational speed of the crankshaft. A small internal combustion engine according to claim 1 of the utility model registration, characterized in that (opening/closing timing) is made variable. (4) In an internal combustion engine equipped with a plurality of each or both of intake valves and exhaust valves, a detection device that directly or indirectly detects the rotational speed of a crankshaft, which is a rotational output shaft, and a fuel supply or inflow air It is equipped with a detection device for detecting the opening/closing degree of the throttle valve for controlling the amount of air flow, and other operating status detection devices. A small internal combustion engine according to claim 1, which is a registered utility model, characterized in that the opening/closing timing (opening/closing timing) is varied, and the number of operations of a plurality of intake valves and exhaust valves is also varied. (5) A detector that detects various operating conditions;
In a small internal combustion engine equipped with a control device etc. that adjusts to various required situations, at least:
The rotational speed of the output rotating shaft, the opening/closing degree of the throttle valve, the cooling water temperature or ambient temperature, the intake pressure, and when used in a car, the vehicle speed, etc. are detected, and the integrated control device controls the fuel supply amount, ignition timing, and fuel consumption. In addition to controlling the injection timing, the valve opening/closing timing (opening/closing timing) of one of the intake valves or both the intake valve and the exhaust valve, and when each valve has a plurality of valves, the number of operations thereof is also controlled. A small internal combustion engine according to claim 1 of patent registration.