JPS61190125A - Complete expansion type internal-combustion engine - Google Patents

Abstract

PURPOSE:To improve heat efficiency and reduce fuel consumption by arranging two sets of pistons and crank shafts in opposite positions and operating them so that the rotating ratio of the crank shafts becomes specific value. CONSTITUTION:Two sets of pistons and crank shafts 1, and 3, 2 and 4 are arranged in opposite positions. An intermediate gear 5 connecting together both shafts is provided so that the rotating ratio of the crank shafts 1 and 2 becomes 1:2. The diameter of the piston 4 is larger than that of the piston 2. Intake air flows through a clearance between a cylinder 6 and the piston 3. The air discharged from a low pressure cylinder 22 is cooled by an air cooling machine 23 and sucked into an engine. Thus, heat efficiency is improved and fuel consumption is reduced, and output is increased.

Description

[Detailed description of the invention] The present invention relates to internal combustion engines.

Reciprocating internal combustion engines generally have a mechanism in which the reciprocating motion of one piston is converted into rotational motion by one crankshaft, but the engine of the present invention uses two sets of pistons and crankshafts to convert exhaust gas into Gas expansion can be completed within the cylinder to avoid wasting energy.

-1-IC7- Figure 1 shows this state in an 8-frame diagram.

The crankshafts 1 and 2 are on both sides, the pistons q and 4 are at opposite positions, and the two shafts are connected so that the rotation ratio of the crankshafts 1 and 2 is 1:2. Equipped with intermediate gear 5.

The structure is such that the liquid flows through the gap formed between the tons 3 as shown in (b).

Explaining the operating state starting from (a), (a) shows the end of exhaust gas and the next transition to the suction stroke, and (b) shows that the suction process is in progress. (C) shows the end of the suction stroke and the transition to the compression stroke, and (2) shows the state of the compression process. (e) shows the end of the compression stroke and the gas gathers in the combustion chamber 11 and is ignited by the spark plug 8, and (f) shows the expansion process in which both pistons 3 and 4 retreat. (g) shows the end of the expansion stroke and the transition to the exhaust stroke, and ←) shows the exhaust process. When this exhaust process is completed, the state returns to (a) and the same cycle is repeated.

The feature of this engine is that the cylinder volume when expanded (g) is larger than the cylinder volume during suction shown in (c), and like a conventional reciprocating engine, the suction volume also expands. The remaining expansion force of the combustion gas, which is the source of exhaust gas noise, is absorbed by the cylinder 6, which is impossible with a mechanism that has the same volume.
and 7 can be converted into effective mechanical work.

FIG. 2 shows an embodiment. This diagram shows an electric ignition system, but a diesel natural ignition system is also available.

This engine uses the energy that would otherwise be wasted in the exhaust gas in conventional reciprocating engines to be used for useful work, resulting in higher thermal efficiency. The method shown in FIG. 3 is a method to further increase the increased thermal efficiency.

This converts the piston 3 into a double acting piston and uses the low pressure piston 21 as an air compressor.

The air discharged from the low pressure cylinder 22 is sent to the air cooler 2
3, it is cooled down and sucked into the engine.

In this way, the gas is compressed twice by the compressor and the engine.
The compression ratio is the product of the compression ratios of the compressor and the engine, so if the engine is equipped with an expansion ratio that can accommodate this, the exhaust pressure Not only that, but exhaust heat can also be converted into effective mechanical work.

This is a feature unique to engines with a mechanism in which the suction volume and compression volume are different.

The present invention makes it possible to completely convert energy inside the engine, whereas previously the only way to effectively utilize exhaust energy was to use a separate machine called a turbocharger operated outside the engine. I made it.

This increases energy conversion efficiency, improves thermal efficiency, reduces fuel consumption, and increases output.

[Brief explanation of drawings]

Figure 1 is a diagram explaining the operating principle of the engine. Figure 2 is a cross-sectional view of an engine implementing the principles of the present invention.

Claims (1)

[Claims] 1, 2 sets of pistons and crankshafts, 1 and 3, and 2 and 4
are placed in opposing positions, and the rotation ratio of crankshafts 1 and 2 is 1:2.
An internal combustion engine that operates in such a way that there is a difference between the volume of gas in the cylinder when it is inhaled and the volume when it expands.