JPS58126444A - Internal-combustion engine having plural power sources - Google Patents

Abstract

PURPOSE:To form an engine to small size and light weight, by connecting at least one of the plural power sources, in which crankshafts are parallelly arranged in an engine case of integral construction, to an output shaft and connecting the other one through a clutch. CONSTITUTION:Crankshafts 6, 7 of the first and second two-cylinder engines 1, 2 are arranged in an engine case 8, and the crankshaft 6 is connected to an output shaft 20 through gears 22, 21 while the crankshaft 7 is connected to the shaft 20 through a clutch 16 and gears 23, 21. Now the first engine 1 is started, then the crankshaft 6 is revoluted to drive the shaft 20, flywheel 24, etc. and maintain an idling condition, while at a light load, an output is generated by the engine 1 only. If required torque is increased, a clutch 16 is engaged to start the second engine 2 operated warming, after starting, output torque of the both engines can be totalized to drive the shaft 20. In this way, plural power sources are integrally housed, and the engine can be formed to small size and light weight.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a plurality of power sources that are capable of outputting power under various conditions by housing a plurality of independent power sources together and using the power sources in combination freely. The present invention relates to an internal combustion engine having a power source.

In recent years, in order to improve fuel efficiency and to follow changes in the required torque, an internal combustion engine has been developed in which a plurality of power sources are provided and these power sources are used in combination with a clutch. For example, Japanese Patent Publication No. 42-26050 shows a configuration in which two engines are installed in parallel and the output of both engines is transmitted to one output shaft.In this 4f4 configuration, each engine is is controlled. In an internal combustion engine with multiple dynamic nozzle sources, each crankshaft must be made independent in order to avoid separating the power sources, and if the independent power sources are simply combined, the structure becomes complex and the volume becomes large. It was something.

In view of the above-mentioned drawbacks, the present invention has been proposed to accommodate a plurality of independent crankshafts in a case with an integral structure, thereby making the volume of the crankshafts smaller and reducing weight, materials, etc., by making the arrangement of the crankshafts more efficient. It provides an internal combustion engine that relies on the power source.

An embodiment of the present invention will be described below with reference to the drawings.

First, FIG. 1 is a Soulton diagram that does not show the concept of the present invention, and FIG. 2 is a horizontally cut plan view. In this embodiment, the engine is comprised of the following components: a first engine 1, a second engine 2, a clutch section 3, an output shaft section 4, and a flywheel section 5. The first and second engines 1.2 are each independent and can be controlled individually 61-1-, and the first engine 1 is directly connected to the output shaft section 4, The second engine 2 is a clutch part 3
The output shaft section 4 combines the outputs of both engines 1.2 and transmits them to the flywheel section 5. These first and second engines 1 and 2, clutch section 3, output shaft section 4, and flywheel section 5 are housed in an integrated case.

The first and second engines 1 and 2 are both two-cylinder type with the same volume, and the crankshafts 17 and 6.1 are arranged parallel to each other at intervals, and each crankshaft 6. A rod 14.15 and a piston 12.13 are connected. This crankshaft 6.1 is arranged so that the distance between its axes becomes close, and the crankshaft 6.1
The piston 12 connected to the crankshaft 7 is located between the pistons 13 connected to the crankshaft 7, and therefore the screws 12 and the piston 13 are positioned at different angles from each other. Become. This crankshaft 6
Three bearings 9 and 10 are respectively installed in the engine case 8 which supports the engine 7, and the center and both ends of the crankshaft 6.7 are supported by these bearings 9 and 10. 6.7 is slightly offset in its length direction, and the crankshaft 7 has its end spaced apart from the output shaft section 4. A drive member 17 of 16 clutches (for example, electromagnetic powder clutch, hydraulic clutch, etc.) is connected to the end of the crankshaft 7. Axis 19
is connected. The output shaft portion 4 is separated from the crank chamber by a pair of walls integrally formed within the engine case 8, and the center of the output shaft portion 4 (the center of the axial center of the crankshaft 6.7) is An output shaft 20 is pivotally supported, and a driven gear 21 is fixed to this output shaft 20.
Drive gears 22 and 23 meshing with the driven gear 21 are fixed to the crankshaft 6 and the intermediate shaft 19, respectively. Also,
At the end of the engine case 8, the vicinity of the flywheel portion 5 is expanded outward so as to be connected to the gear case, and a flywheel 24 is installed in the frontage of the end of the engine case 8. This flywheel 24 is fixed to the output shaft 20, and a gear shaft 25 connected to the transmission is connected to the center of the flywheel 24. The end of the crankshaft 6 is exposed outside the engine case 8, and a pulley 2G is fixed to the end of the crankshaft 6. This pulley 26 is connected to an alternator (not shown) by a V-belt 5-. It drives cooling fans and other auxiliary equipment.

Next, the operation of this embodiment will be explained.

First, when the first engine 1 is started by a starter (not shown), the crankshaft 6 is rotated by the well-known cycle of the piston 12, and the driving gear 22 and the driven gear 2 are rotated.
1. The output shaft 20, flywheel 24, etc. are driven, and the pulley 26 is also rotated at the same time. The idling state is maintained by the operation of the first engine 1, and the output torque of the first engine 1 is outputted for light loads. Then, as the crankshaft 6 rotates, the pulley 2
6 is driven, auxiliary equipment such as an oil pump and a cooling water pump are driven, and lubricating oil is supplied to the first and second engines 1.
．． The cooling water is supplied to the rotating parts of the second engine 2, and also flows through a water jacket (not shown) to warm up the second engine 2, which has not been started.

When the required torque increases, the clutch 1G operates to directly connect the drive member 11 and the driven member 18. Therefore, the output torque of the first engine 1 is transmitted to the crankshaft 1-7 via the crankshaft 6, driven gear 22, drive gear 21, drive gear 23, intermediate shaft 19, and clutch 16, and Start 2. After this second engine 2 starts, the output torque of the second engine 2 is reversely transmitted to the clutch 16, intermediate shaft 19,
It is transmitted to the output horn shaft 20 via the driving gear 23 and the driven gear 21, and the sum of the output torque of the first engine 1 and the output torque of the second engine 2 is transmitted to the output shaft 20. Therefore, the output torque can be increased in accordance with the increase in the required torque.

Since the present invention is configured as described above, a plurality of power sources can be housed together, and the volume can be reduced by the arrangement thereof, and the internal combustion engine can be made lighter and the amount of materials used can be reduced.

[Brief explanation of drawings]

FIG. 1 is a skeleton diagram of an embodiment of the present invention, and FIG. 2 is a horizontal sectional view. 1...First engine, 2...Second engine, 1
2゜13...Piston, 16...Clutch, 20.
...Output shaft. Patent applicant: Fuji Heavy Industries Co., Ltd. Agent: Patent attorney: Makoto Kobashi Ukiyo Patent attorney: Susumu Murai Figure 1 Figure 2

Claims (3)

[Claims] (1) A plurality of crank shirts 1 to 1 are separated in parallel to form a plurality of power sources within an integrally structured engine case,
An internal combustion engine having multiple power sources, characterized in that at least one power source is connected to an output shaft, and other power sources and the output shaft are connected via a clutch housed in an engine case. (2) A plurality of crankshafts 1~ are installed in parallel with their axes close to each other in an integrated engine case, and the piston connected to one crankshaft is connected to the other crankshaft. a plurality of power sources, at least one of which is connected to the output shaft, and the other power sources are connected to the output shaft via a clutch. An internal combustion engine with multiple power sources. (3) Multiple crankshafts are installed in the integrated engine case to house multiple power sources, and a clutch that selectively connects each power source is housed in the empty space of this engine case. An internal combustion engine with multiple motion sources characterized by housing various auxiliary machines in the engine.