Development Of Intake Manifold Pressure Sensor In The Gas Vehicle

Manifold pressure sensor as the gas vehicle gas and air pressure detecting unit is based on ECU, the most important of the pressure ratio to determine the optimal air, is one of the most important link of the automobile can eventually realizethe energy saving and emission reduction.This paper is titled as "develop ment of gas intake manifold pressure sensor, from the structure and production ma nifold pressure sensor calibration algorithm and difficulties,system, process and the final experiment research on the manifold pressure sensor are discussed, to determine the content of the paper.The main work of this paper includes:⑴The structure of the back pressure manifold pressure sensor, the key is back pressurefunction modules, and analyzed its production methods and difficul ties;⑵Based on the manifold pressure sensor hardware scheme, operation mode of compensationcircuit travel analysis, selection, and takes it as the core, to establ ish a complete set of digitalcalibration system;⑶After the design is completed, according to the analysis of each step of the productionprocess, to sort out a set of complete and can realize large-scale production process, to ensure that the product is fully meet the design requireme nts, meet the requirements of gas vehicle;⑷Through a series of experiments, the test set in accordance with theprocess of production ofback pressure manifold pressure sensor, through the quantitative calculation and analysis, to verify whether the manifold pressure senso r technology and process plan designed to achieve the objectives set, require the use of the gas production of automobile products.The back pressure of the manifold pressure sensor prototype has now inXinhui Kangyuinstrumentation measurement and Control Engineering Limited company put into trial production for more than a year, basically reached the expected goal, can basically meet themanifold pressure gas vehicle detection nee ds.