Variable-compression ratio system of engine and control method of variable-compression ratio system
A control method and engine technology, applied in the direction of engine control, machine/engine, mechanical equipment, etc., can solve problems such as immutability
Inactive Publication Date: 2015-04-22
张素英
View PDF12 Cites 10 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the current engine compression ratio is not variable, so research and development of variable compression ratio systems and control methods will become a new energy-saving and emission-reduction technology for future engines
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0075] Since the composition of the eccentric pin assembly of the present invention is various, the present embodiment will be based on figure 1 Based on the eccentric pin assembly composed of non-eccentric pin and eccentric sleeve shown, the variable compression system described is described in detail
[0076] Figure 28 It is an exploded view of the parts state of a variable compression ratio system, in which the eccentric pin assembly connecting the small head hole of the connecting rod body and the piston is composed of figure 1 The shown non-eccentric pin 10 and eccentric sleeve 30 are composed, and the system also includes piston 40, circlip 50, connecting rod body 60, positioning sleeve 70, return spring 80, lock pin 90, connecting rod bush 100, crankshaft 110, main Bearing bush 120, solenoid valve 130, connecting rod cover 140.
[0077] refer to Figure 30 to combine figure 1 , Figure 10 , Figure 11 , Figure 22 , the middle section of the outer circular surfa...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a variable-compression ratio system of an engine and a control method. An eccentric pin assembly in locked connection with a connecting rod body small end hole is arranged between the connecting rod body small end hole and a pin hole of a piston; when oil supply of lubricating oil is controlled by solenoid valves to be interrupted for pressure reduction, connection between the eccentric pin assembly and the connecting rod body small end hole is unlocked; the eccentric pin assembly is rotated under the actions of a connecting rod body and the piston, so that the eccentric position of the eccentric pin assembly is changed; when oil supply of the lubricating oil is controlled by the solenoid valves to be recovered, connection between the eccentric pin assembly and the connecting rod body small end hole is locked again, so that the working length of the connecting rod body is changed, change of a piston top position when the piston compresses the top dead center is realized, accordingly the volume of a combustor when the piston compresses the top dead center is changed, and the goal of changing the variable compression ratio of the engine is achieved.
Description
technical field [0001] The invention relates to the field of engines, in particular to the fields of variable compression ratio systems and control methods for engines. Background technique [0002] As the regulations on energy saving and emission reduction of automobiles become more and more stringent, various automobile companies and research institutes have carried out various technical researches on energy saving and emission reduction in the field of engines. According to the working principle of the engine, different compression ratios are used for different engine loads, which can reduce engine fuel consumption and reduce emissions. However, the current engine compression ratio is not variable, so research and development of variable compression ratio systems and control methods will become a new energy-saving and emission-reduction technology for future engines. Contents of the invention [0003] The purpose of the invention is to realize the two-stage variable co...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): F02D15/04
Inventor 张素英
Owner 张素英