EP 0005613 A3 19791212 - TEMPERATURE CIRCUIT FOR OXYGEN SENSOR DURING WARM-UP

Title (en)

TEMPERATURE CIRCUIT FOR OXYGEN SENSOR DURING WARM-UP

Publication

EP 0005613 A3 19791212 (EN)

Application

EP 79300803 A 19790510

Priority

US 90590578 A 19780515

Abstract (en)

[origin: EP0005613A2] A composite electronic circuit accurately controls air-fuel ratio in an engine having an electronically regulated fuel supply, such as an electronically regulated fuel injection system. The air-fuel ratio is measured by an oxygen sensor connected to the exhaust manifold. A circuit associated with the oxygen sensor compensates for variations in sensor output produced by temperature change during warm-up. After engine warm-up is completed, the circuit provides a voltage having a value independent of engine temperature.

IPC 1-7

F02D 5/00; F02D 5/02; G05D 11/13

IPC 8 full level

F02D 41/14 (2006.01); F02D 41/34 (2006.01)

CPC (source: EP)

F02D 41/1479 (2013.01)

Citation (search report)

FR 2035177 A1 19701218 - PHILIPS NV
DE 2658613 A1 19770707 - NISSAN MOTOR
FR 2241071 A1 19750314 - BOSCH GMBH ROBERT [DE]
FR 2346563 A1 19771028 - BENDIX CORP [US]
FR 2318315 A1 19770211 - BENDIX CORP [US]
FR 2216016 A1 19740830 - BOSCH GMBH ROBERT [DE]
DE 2649606 A1 19770512 - NISSAN MOTOR
FR 2135996 A5 19721222 - BOSCH GMBH ROBERT [DE]
DE 2333743 A1 19750130 - BOSCH GMBH ROBERT
FR 2163267 A5 19730720 - BENDIX CORP
GB 1426569 A 19760303 - JAC INC

Designated contracting state (EPC)

DE FR GB IT SE

DOCDB simple family (publication)

EP 0005613 A2 19791128; EP 0005613 A3 19791212; JP S54150520 A 19791126

DOCDB simple family (application)

EP 79300803 A 19790510; JP 5960079 A 19790515