Engine control parameter adjustment method

A technology of control parameters and adjustment methods, applied in engine control, machine/engine, electrical control, etc., can solve the problems of inability to obtain high-precision target data, difficulty in meeting precision requirements, high manufacturing costs, etc., and achieve low hardware requirements , achieve the effect of low cost and high precision
CN102108906AInactive Publication Date: 2011-06-29LIANCHUANG AUTOMOBILE ELECTRONICS
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
LIANCHUANG AUTOMOBILE ELECTRONICS
Publication Date
2011-06-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an engine control parameter adjustment method, which comprises the following steps of: detecting vehicle tail gas oxygen content by using a wide-band oxygen sensor, and outputting an analog voltage signal; correspondingly compensating tail gas oxygen content sampling voltage obtained by sampling the analog voltage signal according to the change of reference level, and converting into a compensated current scalar; converting a plurality of compensated current scalars obtained according to a plurality of continuous tail gas oxygen content sampling voltages into corresponding current true values; looking up a table to obtain air excess coefficients corresponding to the current true values; and analyzing and evaluating by using a vehicle tail gas oxygen content analyzer according to the air excess coefficients to obtain target data for adjusting engine control parameters, and providing the target data to an engine control unit to adjust the engine control parameters. Through the engine control parameter adjustment method, the engine control parameters can be accurately adjusted, the amount of computation is small, the hardware requirement is low and the cost islow.
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Description

technical field

[0001] The invention relates to automobile technology, in particular to a method for adjusting engine control parameters. Background technique

[0002] The widespread use of automobiles has led to more and more serious environmental pollution. For this reason, countries around the world have formulated strict emission standards to reduce harmful gas emissions. At the same time, a large amount of energy is wasted by low-efficiency engines, especially in today's increasingly tense oil resources, which has become an urgent problem to be solved. How to make cars reduce pollution and improve fuel efficiency has become the focus of the automotive industry. All major automakers have devoted great efforts to research and development to achieve the above-mentioned goals.

[0003] One of the characteristics of oxygen ions is that it is easy to move at high temperature. The wide-area oxygen sensor based on this characteristic is usually sintered into a tube with zirco...

Claims

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