Fuel injection control in supercharged engine

Patent 4641619 Issued on February 10, 1987. Estimated Expiration Date:

August 27, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Method of and system for power generation by supercharged internal combustion engine
Patent #: 4404805
Issued on: 09/20/1983
Inventor: Curtil

Fuel intake system for supercharged engine
Patent #: 4498429
Issued on: 02/12/1985
Inventor: Satow , et al.

Abnormality detecting apparatus for means for sensing operating parameters of an internal combustion engine Patent #: 4541386
Issued on: 09/17/1985
Inventor: Kishi , et al.

Inventors

Assignee

Mazda Motor Corporation

Application

No. 06/769704 filed on 08/27/1985

US Classes:

123/479, Backup systems, fail-safe, failure indicator60/277Having sensor or indicator of malfunction, unsafeness, or disarray of treater (e.g., fusible link, etc.)

Examiners

Primary: Cox, Ronald B.

Attorney, Agent or Firm

Burns, Doane, Swecker & Mathis

International Classes

F01N 3/22 (20060101)
F01N 3/30 (20060101)
F02B 37/16 (20060101)
F02B 37/12 (20060101)
F02B 33/44 (20060101)

Foreign Application Priority Data

1984-08-30 JP

Abstract

A fuel injection control system in an automobile engine comprising an intake system for the supply of air towards the engine and including an air flow sensor, an exhaust system for the discharge of exhaust gases, a supercharger in the intake system for compressing the air flowing towards the engine, and a secondary air supply passage extending between the intake and exhaust systems for the introducing of a portion of the compressed air into the exhaust system and including a secondary air flow sensor. During a normal operating condition, fuel is injected into the engine in a quantity dependent on the difference between the air flow detected by the air flow sensor and the secondary air flow detected by the secondary air flow sensor, but in the event of trouble occurring in the secondary air flow sensor, the fuel is injected in a quantity dependent on the air flow detected by the air flow sensor.