High-pressure common-rail electronic control oil injector
A technology of electronically controlled fuel injection and high-pressure common rail, which is applied in the direction of machines/engines, fuel injection devices, special fuel injection devices, etc., to achieve good effects of energy saving, emission reduction, and engine noise reduction
Active Publication Date: 2011-10-12
北油电控燃油喷射系统(天津)有限公司
View PDF5 Cites 9 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0008] The purpose of the present invention is to disclose a high-pressure common rail electronically controlled fuel injector to solve the technical problem of improving the injection stability of small fuel volume
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 Construction
[0027] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0028] Such as Figure 1-9 As shown, a high pressure common rail electronically controlled fuel injector is disclosed. The high pressure common rail electronically controlled fuel injector is driven by a solenoid valve 12. The oil needle 18 is connected to a control plunger 17, and the control plunger 17 is sleeved with a control valve Sleeve 16, the force of the oil needle spring 13 causes the oil needle 18 to be mounted on the sealing seat surface 28 of the needle valve body, the lower part of the oil needle 18 is clamped in the needle valve body 6, and the needle valve body 6 and the oil needle 18 are matched The tapered surfaces all form a certain inclination angle with the vertical direction. For the convenience of description, the outer contact surfaces of the oil needle 18 and the needle valve body 6 are named the first tapered surface ...
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 discloses a high-pressure common-rail electronic control oil injector, which comprises a high-pressure oil inlet end, a control plunger, an oil needle, a needle valve body sealing seat surface and an injection hole, wherein the high-pressure oil inlet end is connected with a common-rail pipe by an oil pipe; an accommodating cavity is formed between the control plunger and the needlevalve body sealing seat surface; the lower part of the oil needle is sandwiched between an oil needle spring and the needle valve body sealing seat surface; the accommodating cavity is communicated with a control cavity by a fuel channel and an oil inlet small hole; the control cavity is communicated with a transition cavity of a control valve by an oil outlet small hole; the transition cavity isconnected with an oil return pipe of the oil injector; an electromagnetic valve spring pushes a ball valve into the oil outlet small hole in the seat surface by an armature; an electromagnetic valve coil is arranged above the armature; a needle valve body is arranged on the lower part of the high-pressure common-rail electronic control oil injector; the lower part of the oil needle is clamped on the needle valve body; and external contact surfaces of the needle valve body and the oil needle are inclined relative to a vertical direction. The high-pressure common-rail electronic control oil injector can stably control oil injection with small quantity and achieve excellent effects of saving energy, reducing emission and reducing an engine noise.
Description
Technical field [0001] The invention relates to a high-pressure common rail fuel injection system, in particular to a high-pressure common rail electronically controlled fuel injector. Background technique [0002] Nowadays, the automotive industry has higher and higher requirements for emissions, economy and reliability. In order to improve the performance of diesel engines, high-pressure, refined and dexterous fuel injection are the inevitable development direction of fuel injection systems. The high pressure common rail fuel injection system is the main development direction of the diesel engine fuel injection system today, and the high pressure common rail electronically controlled injector is the core and key component of the high pressure common rail fuel injection system, which determines the response speed of the high pressure common rail fuel injection system. Many key parameters such as fuel injection rate and reliability. [0003] The existing high pressure common rail ...
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): F02M51/06F02M47/00F02M61/10
CPCF02M47/027F02M45/12F02M55/008F02M61/12F02M61/205F02M63/0056F02M2200/28
Inventor 尤利李春燕
Owner 北油电控燃油喷射系统(天津)有限公司