Deflector piston two-stroke engine

Details Deflector piston two-stroke engine Deflector piston two-stroke engine

1984-11-21

1986-11-18

Feinberg, Craig R.

Internal-combustion engines

Two-cycle

Whirl through piston-controlled ports

123661, 123307, F02B 7502, F02F 324

Patent

active

046229299

ABSTRACT:
A deflector piston two stroke internal combustion engine has a piston (10) reciprocable in a cylinder and sealed thereto by means of piston rings (P2), the cylinder having communicating with it a scavenge part SC2) and an exhaust part (E2). The piston crown has an upper first planar surface lying at right angles to the piston cylinder axis and a lower parallel planar surface, these two surfaces being connected by a deflector edge (D). The upper planar surface co-operates, at or near top-dead-center with a complementary planar surface on the interior (underside as shown) of the cylinder head with which it has a minimum clearance C2. The approach of these surfaces as top-dead-center is approached generates a "squish" that is a jet of fuel/air mixture in the direction of arrow (S2) towards the spark plug which improves combustion.

REFERENCES:
patent: 2736306 (1956-02-01), McDuffie
patent: 2782777 (1957-02-01), Jasper
patent: 4236490 (1980-12-01), Correll
Morrell et al, "Oliver's New 1800 Tractor Engine", SAE Journal, vol. 69, No. 10, Oct. 1961.

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