Heat distribution passage for manifold heater system

Details Heat distribution passage for manifold heater system Heat distribution passage for manifold heater system

1975-04-09

1976-08-31

Myhre, Charles J.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123179H, 123 52M, F02M 3100

Patent

active

039773779

ABSTRACT:
The disclosure illustrates a heat distribution passage for the intake manifold of an internal combustion engine having a burner type manifold air preheater. The preheater is positioned in an elongated intake manifold having spaced inlet ports which carry intake air to the cylinders of the engine. The preheater is adjacent some, but not all, of the inlet ports. The distribution passage extends from a point adjacent the preheater to an outlet at a remote engine intake port opening. When an engine intake valve is opened to pass air into a cylinder, the intake port has a momentary reduction in pressure. This reduction causes heated air to pass from the preheater through the passage and into the intake port where it is mixed with the nonheated intake air. Proper sizing of the tube in relation to the port area assures even distribution of heat between all of the intake ports.

REFERENCES:
patent: 3687122 (1972-08-01), Kamo

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