Re: Тестирование системы локально-удаленной диагностики
Цитата:
Сообщение от InVinoVeritas
в зависимости от оборотов двигателя и скорости???
Статическую характеристику в виде графиков к примеру за поездку может сохранять?
Если быть точным, то считается вот так:
Calculated LOAD Value (PID 04)
The OBD regulations previously defined CLV as:
(current airflow / peak airflow @sea level) * (BARO @ sea level / BARO) * 100%
Various manufacturers have implemented this calculation in a variety of ways. The following definition, although a little more restrictive, will standardise and improve the accuracy the calculation.
LOAD_PCT = [current airflow] / [(peak airflow at WOT@STP as a function of rpm) * (BARO/29.92) * SQRT(298/(AAT+273))]
Where:
STP = Standard Temperature and Pressure = 25 °C, 29.92 in Hg BARO, SQRT = square root,
WOT = wide open throttle, AAT = Ambient Air Temperature and is in °C
Characteristics of LOAD_PCT are:
Reaches 1.0 at WOT at any altitude, temperature or rpm for both naturally aspirated and boosted engines.
Indicates percent of peak available torque.
Linearly correlated with engine vacuum
Often used to schedule power enrichment.
Compression ignition engines (diesels) shall support this PID using fuel flow in place of airflow for the above calculations.
А если вкратце, то зависит от расхода воздуха и атмосферного давления. В некоторых случаях от оборотов двигателя.
Древовидный вид