Metering fuel by compressibility

Details Metering fuel by compressibility Metering fuel by compressibility

1976-06-23

1978-03-28

Myhre, Charles J.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123139AS, F02M 4702

Patent

active

040809420

ABSTRACT:
A piston engine timed fuel injection system wherein highly compressed fuel, .g. at 20,000 p.s.i., is temporarily stored in a chamber isolated from the pressure source. A flow valve is opened to permit part of the stored fuel to expand into the combustion space. Spring force closes the valve while the injection pressure is relativey high, e.g. about 3000 p.s.i. Fuel injection pressure at beginning of the injection period may be very high, e.g. 20,000 p.s.i., thereby promoting improved fuel atomization, shorter ignition delay, lower rate of pressure rise in the combustion space, smoother combustion, and lower peak pressure in the combustion chamber. By injecting fuel from an "isolated" chamber it is possible to accurately limit the quantity in accordance with compressibility factors.

REFERENCES:
patent: 1701089 (1929-02-01), von Salis
patent: 2347363 (1944-04-01), Palumbo
patent: 2420550 (1947-05-01), Miller
patent: 3516395 (1970-06-01), Bassot et al.
patent: 3990422 (1976-11-01), Watson et al.

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