Internal combustion engine negative pressure sensor

Abstract

Navigate pressure sensor of internal-combustion engine uses electromagnetic element to measure its admission pressure. Set a diaphragm 5 between main body 1 and end cap 12. Inner space of 1 is divided into a negative pressure chamber B1 and a stable pressure chamber C1 by a spring base 2, which has a damped pore 17. B2 connects with blow hole A1. A spring with gather elasticity is set between 2 and 5. The other side of 5 has a magnet 15, to which sets a Hall element 14 in 12. The invention has merits of sensitive reaction, high action precision, extensive measuring range, high working stability, small capacity, low cost and convenient equipment. It can reflect workload change of internal-combustion engine exactly and can be applied to determine admission pressure and workload of various internal-combustion engines.

Description

Technical field

[0001] The invention relates to a negative pressure sensor which uses an electromagnetic element to measure the gas pressure of an internal combustion engine. In particular, an internal combustion engine negative pressure sensor capable of measuring the working load of the internal combustion engine. Background technique

[0002] There are many devices for measuring negative pressure at present, such as the negative pressure sensor used for gasoline engines on cars, but its price is more expensive. Currently, the sensors used to measure the load of gasoline engines on motorcycles are mainly potentiometer-type throttle sensors. There are mainly two types of linear potentiometers and rotary potentiometers, which are linked together with the throttle. Although the price is not high, installation and adjustment are troublesome.

[0003] Chinese patent announcement number: CN 2709962Y, date of announcement: July 13, 2005, name of invention: "Negative pressure sen...

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