Air-fuel ratio control apparatus in internal combustion engine

Details Air-fuel ratio control apparatus in internal combustion engine Air-fuel ratio control apparatus in internal combustion engine

1988-04-08

1989-08-08

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Fuel injection system

123440, 204406, 60274, F02M 5100

Patent

active

048542881

ABSTRACT:
An air-fuel ratio control apparatus in an internal combustion engine with air-fuel ratio feedback control means comprises first air-fuel ratio sensor which senses the air-fuel ratio of the air-fuel mixture having a first level of the theoretical air-fuel ratio or leaner than the theoretical air-fuel ratio and second air-fuel ratio sensor which senses the air-fuel ratio of the air-fuel mixture having second level of the air-fuel ratio richer than the first air-fuel ratio. In a region where the amount of NO.sub.x generated is small, the first air-fuel feed back control is performed based on the detection by the first air-fuel ratio sensor, while in a region where the amount of NO.sub.x generated is large, the second air-fuel feedback control is performed based on the detection by the second air-fuel ratio sensor, whereby the amount of NO.sub.x is reduced without using an EGR control system.

REFERENCES:
patent: 4615319 (1986-10-01), Tomisawa
patent: 4655188 (1987-04-01), Tomisawa et al.
patent: 4707984 (1987-11-01), Katsuno et al.
patent: 4729359 (1988-03-01), Tomisawa et al.
patent: 4745741 (1988-05-01), Masui et al.
patent: 4747265 (1988-05-01), Nagai et al.
patent: 4750328 (1988-06-01), Sawada
patent: 4763627 (1988-08-01), Tomisawa
patent: 4766870 (1988-08-01), Nakajima et al.
patent: 4773376 (1988-09-01), Uchikawa et al.

Affiliated with

Also associated with

Rating

Air-fuel ratio control apparatus in internal combustion engine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Air-fuel ratio control apparatus in internal combustion engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Air-fuel ratio control apparatus in internal combustion engine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-898347