Internal-combustion engines – Charge forming device – Heating of combustible mixture
Patent
1982-06-09
1984-01-17
Lazarus, Ronald H.
Internal-combustion engines
Charge forming device
Heating of combustible mixture
123552, 123545, 261142, 219207, F02M 3100
Patent
active
044258992
ABSTRACT:
The present invention proposes an intake heating device of an internal combustion engine. The intake heating device has a hollow heater vessel comprising an inner pipe and an outer pipe between which an enclosed area is defined. For heating the inner pipe, a plurality of PTC elements are disposed in said enclosed area. The protection of the PTC elements from water, oil and the like is accomplished by coupling the inner and outer pipes hermetically and by embedding the lead members for applying voltage to PTC elements integrally in the outer pipe wall when it is being cast. For maintaining the fundamental function of the PTC elements, at least one of the lead members embedded in the pipe wall is formed in a tubular shape along which a through hole can be provided for allowing a certain amount of air to flow into said enclosed area.
REFERENCES:
patent: 1472233 (1923-10-01), Taylor
patent: 4108953 (1978-08-01), Rocco
patent: 4327697 (1982-05-01), Wada
patent: 4361125 (1982-11-01), Igashira
patent: 4362142 (1982-12-01), Igashira
patent: 4377148 (1983-03-01), Ishida
patent: 4390000 (1983-06-01), Igashira
Kato Keigo
Kuroiwa Yoshio
Lazarus Ronald H.
Toyota Jidosha Kogyo Kabushiki Kaisha
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