Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1975-11-24
1977-07-19
Croyle, Carlton R.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
123139AC, 417387, F04B 3502, F02M 6100
Patent
active
040361950
ABSTRACT:
A combination pump-injector device directly mountable upon the cylinder heads in an internal combustion engine. The device includes a housing with a spring biased cam operated constant stroke reciprocating piston therein and an unrestrained free-floating plunger means mounted between the piston and an injector valve which communicate directly with the engine cylinder. A quantity fuel metering device transfers a predetermined amount of fuel to a chamber communicating between the free-floating plunger and the injector valve and tends to move the free-floating plunger toward the reciprocating piston. A secondary fluid supply communicates with and fills a second chamber disposed between the piston and the free-floating plunger and counteracts the tendency for the free-floating plunger to move toward the piston. The secondary fluid chamber includes first and second fluid escape and entry ports which determine the beginning and termination of an injection cycle. Upon movement of the piston toward the plunger, injection begins when the reciprocating piston covers said first port and the plunger means is forced, under the influence of the fluid trapped within the secondary fluid chamber, toward the injector valve which valve will open when a certain predetermined injection pressure is reached. When the second secondary fluid chamber port is uncovered by the free-floating plunger, injection will abruptly terminate. The device also includes means for utilizing the secondary fluid as a lubricant between the moving parts and the housing.
REFERENCES:
patent: 2424943 (1947-07-01), Nicolls
patent: 2734531 (1956-02-01), Bizak
patent: 3029737 (1962-04-01), Bessiere
patent: 3782864 (1974-01-01), Perr
patent: 3847510 (1974-11-01), Fenne
Caterpillar Tractor Co.
Croyle Carlton R.
Koczo, Jr. Michael
LandOfFree
Unit fuel injector does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Unit fuel injector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Unit fuel injector will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2288066