Combustion pressure data collection system for...

Details Combustion pressure data collection system for... Combustion pressure data collection system for...

2005-07-12

2005-07-12

Mohanty, Bibhu (Department: 3747)

Internal-combustion engines

Engine speed regulator

Open loop condition responsive

C123S052100, C123S406120

Reexamination Certificate

active

06915780

ABSTRACT:
A combustion pressure data collection system for a multi-cylinder engine includes a cylinder pressure sensor, an amplifier unit, and a channel switching unit. The cylinder pressure sensor directly detect a combustion pressure of respective cylinders, the amplifier unit converts a charge signal from the cylinder pressure sensor into voltage signal and have an automatic correction function for automatically correcting a voltage output level so that the level is setted to the same level before and after the cylinder pressure sensor generate a charge, and the amplifier unit of the respective cylinders is connected to the channel switching unit. A channel for actuating to be measured is selected from signals of a plurality of channels supplied from the amplifier units in response to a channel selection signal output from an electronic engine control unit, and combustion pressure data are outputted to the electronic engine control unit from the cylinder of the channel, thereby combustion pressure data can be effectively collected by a simple arrangement without complex processing.

REFERENCES:
patent: 5276625 (1994-01-01), Nakaniwa
patent: 3123798 (2003-10-01), None

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