Internal-combustion engines – Combustion chamber means having fuel injection only – Injection of fuel onto igniter – deflector – heater – or atomizer
Patent
1998-11-13
2000-11-28
Yuen, Henry C.
Internal-combustion engines
Combustion chamber means having fuel injection only
Injection of fuel onto igniter, deflector, heater, or atomizer
123261, F02B 300, F02B 1900
Patent
active
061521035
ABSTRACT:
A direct fuel injection ignition engine includes combustion chambers with a pent roof type ceiling. Each piston has a top surface with a configuration complementary to the combustion chamber ceiling. A fuel injector is disposed at a peripheral portion of the combustion chamber and injects fuel toward the center portion of the top surface of the piston. A cavity is formed on the top surface of the piston. The cavity has a configuration of an elongated circle with a substantially flat bottom surface. The surrounding side wall of the cavity is substantially upright in relation to the bottom surface. A cavity centerline drawn through the longitudinal axis of the cavity is perpendicular to the injection axis line and offset from the center of the piston toward the injector.
REFERENCES:
patent: 4958604 (1990-09-01), Hashimoto
patent: 5553588 (1996-09-01), Gono et al.
patent: 5709189 (1998-01-01), Monnier
patent: 5711269 (1998-01-01), Oda et al.
Kudo Hidetoshi
Marubara Masashi
Ota Noriyuki
Yamashita Hiroyuki
Abrams Hugh A.
Gimie Mahmoud M.
Mazda Motor Corporation
Yuen Henry C.
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