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Automobile, engine, crank connecting rod mechanism and connecting rod assembly thereof

A connecting rod assembly and engine technology, applied in the fields of automobiles, crank connecting rod mechanisms and their connecting rod assemblies, and engines, can solve the problem that the compression ratio of the engine cannot be too large, etc.

Active Publication Date: 2018-03-06
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the engine is under full load conditions, the compression ratio of the engine cannot be too large due to the limitations of the strength of the components in the engine and the knocking of the gasoline engine.

Method used

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  • Automobile, engine, crank connecting rod mechanism and connecting rod assembly thereof
  • Automobile, engine, crank connecting rod mechanism and connecting rod assembly thereof
  • Automobile, engine, crank connecting rod mechanism and connecting rod assembly thereof

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0104] An automobile engine includes a crank linkage, which includes an engine crankshaft and a connecting rod assembly.

[0105] refer to figure 1, The connecting rod assembly includes: a connecting rod 1 , an eccentric sleeve 2 with an eccentric hole 20 and a hydraulic driver 3 with an output shaft 30 . The connecting rod 1 has a connecting rod small end 10 and a connecting rod large end 11. The connecting rod small end 10 is used to extend into the piston in the engine cylinder and connects the piston (not shown in the figure), and the connecting rod large end 11 is used to cover the engine. The connecting rod journal of the crankshaft is connected to the engine crankshaft.

[0106] combine figure 2 , The connecting rod big end 11 has a connecting rod big end hole 13 . The small head 10 of the connecting rod is provided with an eccentric sleeve installation hole 12 to accommodate the eccentric sleeve 2 . The inner circle 21 of the eccentric sleeve 2 is not concentric w...

no. 2 example

[0180] Compared with the first embodiment, the second embodiment differs in that:

[0181] refer to Figure 20 with Figure 21 , the first part 10a' of the connecting rod 1' is provided with an external threaded part 103 and the second part 10b' is provided with an internal threaded part 104. Rotor cavity 50 (combined with Figure 22 ) is located in the second part 10b' and communicates axially with the internal threaded part 104. After assembly, the external threaded part 103 can seal the rotor cavity 50 to prevent the hydraulic oil in the rotor cavity 50 from flowing out from the internal threaded part 104. The external thread portion 103 is provided with an output shaft receiving hole 105, and the output shaft 30' of the hydraulic driver (not shown in the figure) (combined with Figure 23 ) can pass between the output shaft receiving hole 105 and the outer circular surface of the eccentric sleeve (not shown in the figure) for worm gear transmission.

[0182] refer to ...

no. 3 example

[0191] Compared with the first embodiment and the second embodiment, the difference of the third embodiment is:

[0192] refer to Figure 24 with Figure 25 , The connecting rod 6 is integrally formed, and the connecting rod 6 is provided with a connecting rod cavity 60, and a hydraulic driver (not shown in the figure) can be arranged in the connecting rod cavity 60, and the connecting rod cavity 60 can be used as a rotor cavity. The connecting rod cavity 60 has an assembly inlet 62 located on the inner circular surface 61 of the big head, and a big head cover 63 is arranged in the assembly inlet 62, and the big head cover 63 plays a role of isolating and sealing the driving chambers of the hydraulic driver.

[0193] The big head cover part 63 has an end face 630 for facing the crankshaft of the engine. The end face 630 is an arc surface, which may have the same radius as the inner circular face 61 of the big head, and the two may be flush with each other.

[0194] to combin...

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Abstract

The invention relates to an automobile, an engine, a crank connecting rod mechanism and a connecting rod assembly thereof. The connecting rod assembly comprises a connecting rod, an eccentric sleeve with an eccentric hole, and a hydraulic driver with an output shaft, wherein the connecting rod is provided with a connecting rod small head and a connecting rod big head; the connecting rod big head is provided with a connecting rod big head hole; the connecting rod small head is provided with an eccentric sleeve mounting hole capable of accommodating the eccentric sleeve; the hydraulic driver isarranged on the connecting rod; the output shaft is in transmission connection with the eccentric sleeve; under the action of hydraulic pressure, the output shaft can do rotational motion around the central axis of the output shaft and drives the eccentric sleeve through transmission connection to do rotational motion around the central axis of an excircle so as to change the distance between theeccentric hole and the connecting rod big head hole. According to the technical scheme, the connecting rod assembly can realize changeable compression ratio of an engine.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an automobile, an engine, a crank connecting rod mechanism and a connecting rod assembly thereof. Background technique [0002] The car engine includes a crank-link mechanism. The function of the crank-link mechanism is to convert the reciprocating motion of the piston into the rotational motion of the engine crankshaft, and at the same time convert the force acting on the piston into the torque output by the engine crankshaft to drive the car wheels. turn. According to the theoretical formula η=1-1 / CR of the thermal efficiency of the engine with the crank connecting rod mechanism (K-1) (η is the thermal efficiency, CR is the compression ratio, and K is the adiabatic index), and a larger compression ratio of the engine can obtain a larger thermal efficiency. However, when the engine is under full load conditions, the compression ratio of the engine cannot be too large due t...

Claims

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Application Information

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IPC IPC(8): F16C7/06F16C9/04F16H21/20F02B75/32
CPCF02B75/32F16C7/06F16C9/04F16H21/20
Inventor 王京堂
Owner SAIC MOTOR
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