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Piston combustion engine with variable bent axle radius

A technology for an internal combustion engine and a crankshaft is applied in the field of piston internal combustion engines with variable crankshaft radius, and can solve the problems of low effective thermal efficiency of the internal combustion engine and the like

Active Publication Date: 2013-07-24
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Corresponding to the technical bottleneck that causes the effective thermal efficiency of the internal combustion engine to be low

Method used

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  • Piston combustion engine with variable bent axle radius
  • Piston combustion engine with variable bent axle radius
  • Piston combustion engine with variable bent axle radius

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] A crankshaft radius variable piston internal combustion engine, which includes a cylinder block 3, a piston 5, a connecting rod 6, and a crankshaft; the crankshaft used is installed and used in conjunction with the piston 5, and the piston 5 is arranged in the cylinder block 3 and along the Its inner wall slides; it is important to emphasize that:

[0066] The crankshaft used by the variable crankshaft radius piston internal combustion engine meets the following requirements: the crankshaft includes a crankshaft horizontal rod A20, a crankshaft horizontal rod B9, and a restraining groove plate 14 at the end of the crankshaft horizontal rod; wherein:

[0067] The crankshaft horizontal rod A20 basically coincides with the rotation axis of the crankshaft external support, and the crankshaft horizontal rod B9 is parallel to the rotation axis of the crankshaft external support;

[0068] The crankshaft horizontal rod end constraining groove plates 14 are arranged in pairs, an...

Embodiment 2

[0089] The content of this embodiment is basically the same as that of Embodiment 1, and the differences that need to be emphasized are:

[0090] 1) Most of the paths of the restraining grooves 11 at the end of the crankshaft horizontal rod in the crankshaft of the crankshaft radius variable piston internal combustion engine are arranged along a circle with the same radius;

[0091] The remaining small part of the path is two parts separated by discontinuity in the whole path, and the distance between it and the crankshaft external support rotation axis is 60-140% of the radius of the aforementioned equal-radius circle track; The sum of the corresponding central angle ranges occupied by the circle path part in the circumferential direction is 80°, as shown in the attached image 3 .

[0092] 2) The specific shape of the non-equal-radius circle part of the constraint groove 11 at the end of the crankshaft horizontal rod is a combination of the following two types:

[0093] On...

Embodiment 3

[0100] The content of this embodiment is basically the same as that of Embodiment 1, and the differences that need to be emphasized are:

[0101] In the crankshaft of the crankshaft radius-variable piston internal combustion engine, most of the paths of the restraining grooves 11 at the end of the crankshaft horizontal rod are arranged along a circle with the same radius;

[0102] The remaining small part of the path is a continuous part in the whole path, and the distance between the center of the non-equal-radius path and the equal-radius path is 95% to 135% of the radius of the equal-radius circle track; The radius part is connected smoothly; the corresponding central angle range occupied by this part in the circumferential direction is 85°;

[0103] The non-equal radius path is a drop-shaped protrusion protruding away from the rotation center; as attached Figure 4 : The restraining groove 11 at the end of the crankshaft horizontal bar with an angle of 0° to 85° in the ra...

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Abstract

A piston combustion engine with variable bent axle radius comprises an air cylinder body (3), a piston (5) and a connecting rod (6). A bent axle comprises a bent axle horizontal rod A (20), a bent axle horizontal rod B (9), and a bent axle horizontal rod end part restraint groove plate (14); a B end part (10) of the bent axle horizontal rod slides in the bent axle horizontal rod end part restraint groove plate (14); and the bent axle horizontal rod A (20) and the bent axle horizontal rod (B) are connected together by a connecting member with variable length. The piston combustion engine with the variable bent axle radius breaks through the technical bottleneck in the prior art fundamentally, and improves the effective thermal efficiency obviously.

Description

technical field [0001] The invention relates to the technical field related to internal combustion engine crankshafts, and in particular provides a piston internal combustion engine with variable crankshaft radius. Background technique [0002] In view of the current piston internal combustion engine power stroke when the top dead center pressure is the highest, the crankshaft moment arm is zero, so-called "dead point", of course the work must be out of the question. Corresponds to the technical bottleneck that causes the effective thermal efficiency of the internal combustion engine to be low. Taking the current gasoline internal combustion engine as an example, the maximum pressure on the piston is usually 50P 0 , efficiency improvement is inevitable. [0003] It is desired to obtain a piston internal combustion engine with better technical effect. Contents of the invention [0004] The object of the invention is to provide a crankshaft radius variable piston internal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B75/32F16C3/06
Inventor 柴俭
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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