Dynamic pressure limitation with safety valve

Details Dynamic pressure limitation with safety valve Dynamic pressure limitation with safety valve

1986-07-16

1988-06-14

Argenbright, Tony M.

Internal-combustion engines

Engine speed regulator

Responsive to deceleration mode

188273, F02D 906

Patent

active

047504595

ABSTRACT:
A dynamic pressure-limiting device in an engine exhaust brake, wherein the edge surface of a butterfly disc valve in its closed position is bypassed at one point by a poppet valve bore in which is slidably arranged a poppet valve head which is resiliently urged into the closed position by a spring to provide a safety valve which responds with greater reliability when the upper dynamic pressure limit is exceeded, the response being matched to the amount the limit is exceeded, includes a narrow gap between the butterfly valve disc in its closed position and the poppet valve head in its closed position, and the characteristic of the spring rises at a ratio of spring force (N) to spring deflection (mm) of 1.5-2.5:1. Allowance is made in determining the spring characteristic for the suction effect of the flowing gas on the poppet valve head.

REFERENCES:
patent: 2895571 (1959-07-01), Hanebeck
patent: 4111166 (1978-09-01), Alstrin et al.
patent: 4682674 (1987-07-01), Schmidt

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