System for purifying exhaust gas of a spark ignition type four s

Details System for purifying exhaust gas of a spark ignition type four s System for purifying exhaust gas of a spark ignition type four s

1974-05-01

1976-05-04

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

60305, 123 75E, 123 901, 123119A, F02B 7510

Patent

active

039539695

ABSTRACT:
The valve-overlapping period of a spark ignition type, four stroke internal combustion engine extends within the range of 60.degree. to 90.degree. of crank angle with the valve overlapping period being generally equally divided to each side of the piston top dead center so that the pressure differential between the exhaust gas passage of the engine and the fuel and air intake passage causes the exhaust gas to counterflow from the exhaust gas passage to the combustion chamber and into the intake passage of the engine with the suction effect of piston descent being negligible when the piston is in the vicinity of top dead center. Secondary air supplied to the exhaust gas passage of the engine when the pressure in the exhaust gas passage is lower than atmospheric pressure during the valve-overlapping period causes the secondary air and exhaust gas mixture to mix with the fresh air and fuel mixture in the intake passage to preheat the fresh air and fuel mixture and subsequent recombustion within the combustion chamber of the engine together with the fresh mixture of fuel and primary air.

REFERENCES:
patent: 3334618 (1967-08-01), Funiciello
patent: 3413965 (1968-12-01), Gavasso
patent: 3494336 (1970-02-01), Myers
patent: 3507261 (1970-04-01), Myers
patent: 3653212 (1972-04-01), Gast
patent: 3662541 (1972-05-01), Sawada
patent: 3714932 (1973-02-01), Meacham
Taylor, C. F., The Internal Combustion Engine In Theory and Practice, (Vol. 1), MIT--Wiley, N. Y., 1960, pp. 190-191.

Affiliated with

Also associated with

Rating

System for purifying exhaust gas of a spark ignition type four s does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System for purifying exhaust gas of a spark ignition type four s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for purifying exhaust gas of a spark ignition type four s will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-671091