Title:
λセンサの内部抵抗の決定装置および方法
Document Type and Number:
Japanese Patent JP4242935
Kind Code:
B2
Abstract:
The invention is directed to an arrangement for determining the internal resistance of a lambda probe having a positive pole and an internal resistance. A computer includes at least one computer port having a switchable state, a signal input and fixed pregiven values. A supply voltage source having a positive pole and a measurement resistor are also provided. The positive pole of the supply voltage source is connected to the positive pole of the lambda probe via the computer port and the measurement resistor. An analog/digital converter is connected forward of the signal input and the positive pole of the lambda probe is connected directly to the analog/digital converter for applying variable values to the signal input via the analog/digital converter. The computer is adapted to compute the internal resistance of the lambda probe from the variable values applied to the signal input and the fixed pregiven values. A method of determining the internal resistance of a lambda probe is also disclosed.
Inventors:
Aberhard Schneiber
Erich Jungginger
Rota Ruff
Erich Jungginger
Rota Ruff
Application Number:
JP23568997A
Publication Date:
March 25, 2009
Filing Date:
September 01, 1997
Export Citation:
Assignee:
ROBERT BOSCH GMBH
International Classes:
G01N27/409; F02D41/14; G01N27/406; G01R27/02
Domestic Patent References:
| JP8043347A | ||||
| JP55003734U | ||||
| JP3503935A | ||||
| JP2504674A |
Foreign References:
| WO1995024643A1 |
Attorney, Agent or Firm:
Kazuo Shamoto
Shosuke Imai
Tadashi Masui
Tadahiko Kurita
Yasushi Kobayashi
Hideo Tanaka
Otsuka Sumie
Shosuke Imai
Tadashi Masui
Tadahiko Kurita
Yasushi Kobayashi
Hideo Tanaka
Otsuka Sumie