High-pressure pressure sensor with separation structure
A separation structure, high pressure technology, applied in the direction of measuring fluid pressure, measuring fluid pressure through electromagnetic components, instruments, etc., can solve the problems of high assembly complexity, high product cost, complex parts structure, etc., to achieve convenient assembly and low cost. , the effect of simple structure
Pending Publication Date: 2020-06-26
南京容宇仪器仪表有限公司
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Problems solved by technology
[0003] The currently used high-pressure pressure sensor usually integrates the pressure measurement port and the installation shell into one body, the structure of the parts is complicated, the assembly complexity is high, and the product cost is high
However, each OEM has different requirements for the size of the installation interface of the product, which leads to a large number of pressure measurement port forms, which cannot produce scale effect, and the cost of parts remains high.
Method used
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Embodiment Construction
[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.
[0019] see figure 1 , a high-pressure pressure sensor with a separate structure, comprising a pressure measuring port (1), an installation housing (2), a signal processing circuit board (3), an electrical connector (4) and an elastic electrical contact piece (5). It is characterized in that the pressure measuring port (1) and the installation shell (2) are separate structures and connected by welding (6).
[0020] The welding (6) is electron beam welding, laser welding, argon arc welding and other welding methods.
[0021] The mounting housing (2) has a tool interface (7) for assembly.
[0022] The tool interface (7) is a threaded interface or a hexagonal surface i...
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The invention discloses a high-pressure pressure sensor with a separation structure. The high-pressure pressure sensor can be used for a diesel engine high-pressure common rail system and a gasoline engine in-cylinder direct injection system. The sensor comprises a pressure measuring port, an installation shell, a signal processing circuit board, an electric connector and an elastic electric contact piece. The pressure measuring port and the mounting shell are of a separated structure and are connected through welding. The pressure measuring port is used for monitoring fuel pressure; the mounting shell is matched with the matching interface and is provided with a tool interface for assembling; the signal processing circuit board is arranged in the sensor cavity, electrically connected withthe pressure measuring port and used for converting a sensed pressure signal into an electric signal; the electric connector is connected with the signal processing circuit board through the elasticelectric contact piece and transmits electric signals to a control system. The high-pressure pressure sensor has the characteristics that the structure is simple, the working pressure can reach 280MPa, the assembly is convenient, and the cost is low.
Description
technical field [0001] The invention relates to the technical field of sensitive components, in particular to a pressure sensor for a high-pressure common rail system of a diesel engine and an in-cylinder direct injection system of a gasoline engine. Background technique [0002] In order to meet the increasingly stringent requirements for engine emission and fuel economy, diesel engines use high-pressure common rail technology, and gasoline engines use in-cylinder direct injection technology to obtain very high fuel pressure in all engine speed ranges to ensure repeated mist of fuel in the cylinder , and then fully burn, improve fuel economy, reduce smoke and NOX emissions. [0003] The currently used high-pressure pressure sensor usually integrates the pressure measurement port and the installation shell, and the structure of the parts is complicated, the assembly complexity is high, and the product cost is high. However, each OEM has different requirements for the size o...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G01L9/00
CPCG01L9/0026
Inventor 周志明
Owner 南京容宇仪器仪表有限公司