Method for controlling an oxygen concentration detection apparatus with a heater element

Patent · Tue Jan 26 00:00:00 EST 1988

OSTI ID:5331218

Mieno, T; Nakajima, T; Okada, Y; Oono, N

A method for controlling an oxygen concentration detection apparatus of an internal combustion engine is described having an exhaust gas passage, which apparatus includes an oxygen concentration sensing element provided in the exhaust gas passage and producing an output signal representing an oxygen concentration in an exhaust gas of the engine and a heater element connected to the oxygen concentration sensing element and operative to heat the oxygen concentration sensing element when a heater current is supplied thereto. The method comprises: a detection step for detecting a temperature of the engine immediately before a start of a supply of the heater current; an a control step for controlling a magnitude of the heater current from the start of the supply of the heater current, for a time period which is determined correspondingly to the temperature of the engine detected by the detection step, to be lower than a magnitude of the heater current after an elapse of the time period.

• Assignee: Honda Giken Kogyo Kabushiki Kaisha, Tokyo
• Patent Number(s): US 4721088
• OSTI ID: 5331218
• Resource Relation: Patent File Date: Filed date 1 Dec 1986
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
FUEL SYSTEMS
MONITORS
OXYGEN ENRICHMENT
DETECTION
EXHAUST GASES
HEATERS
INTERNAL COMBUSTION ENGINES
MONITORING
OXYGEN
TEMPERATURE MEASUREMENT
ELEMENTS
ENGINES
ENRICHMENT
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
MEASURING INSTRUMENTS
NONMETALS
WASTES
330100* - Internal Combustion Engines