Intake air parameter estimating device for internal...

Details Intake air parameter estimating device for internal... Intake air parameter estimating device for internal...

2006-11-21

2006-11-21

Dolinar, Andrew M. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C073S115060

Reexamination Certificate

active

07139655

ABSTRACT:
An intake parameter estimating device is provided for estimating a tuning frequency of an internal combustion engine, which in turn can be used to estimate an intake air pressure of the internal combustion engine. The intake parameter estimating device basically has a fundamental frequency calculating section, an engine rotational speed detecting section and a tuning frequency calculating section. The fundamental frequency calculating section calculates a fundamental frequency of a pressure wave inside an air intake pipe based on a shape of the air intake pipe and speed of sound. The engine rotational speed detecting section detects an engine rotational speed. The tuning frequency calculating section calculates a tuning frequency of the pressure wave inside the air intake pipe based on the fundamental frequency and the engine rotational speed. The tuning frequency can then be used to estimate the intake air pressure of the internal combustion engine.

REFERENCES:
patent: 10-153465 (1998-06-01), None

Affiliated with

Also associated with

Rating

Intake air parameter estimating device for internal... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Intake air parameter estimating device for internal..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intake air parameter estimating device for internal... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3643784