Project Gutenberg's Marvel Carbureter and Heat Control, by Anonymous

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Title: Marvel Carbureter and Heat Control
As Used on Series 691 Nash Sixes Booklet S

Author: Anonymous

Release Date: November 20, 2008 [EBook #27298]

Language: English

Character set encoding: ASCII

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MARVEL
CARBURETER
AND
HEAT CONTROL

AS USED ON
SERIES 691 NASH SIXES

BOOKLET
S

MARVEL CARBURETER CO.
FLINT, MICHIGAN
U.S.A.

MODEL "S" CARBURETER

Used on Series 691 Nash Sixes

The carbureter measures the fuel charges for the engine and
automatically mixes them with the proper amount of air to form a highly
combustible gas. The Marvel Model "S" Carbureter is of the automatic air
valve, heat controlled type. Its outstanding advantages are:

1. Simplicity of construction and operation.

2. Quick starting in any weather.

3. Automatically controlled heat application to ensure complete
vaporization of fuels.

4. Economy in fuel consumption.

5. Ease of adjustment to meet varied driving and climatic conditions.

CONSTRUCTION

The construction embodies a main body or mixing chamber and a
conventional float chamber bowl with fuel strainer attached at point of
entrance of fuel to bowl. Within the mixing chamber are two nozzles
which proportion the amount of gasoline used in the mixture. One of
these nozzles, called the "low speed," is regulated by the gasoline
adjustment screw at bottom of carbureter and the other, called the "high
speed," is controlled by the automatic air valve. An air screw is
provided which regulates the pressure of the air valve spring enclosed
therein. Within this screw is also enclosed a plunger connected by a
link to the air valve. The function of this plunger is to provide a
resistance in addition to that of the air valve spring to assist in
acceleration. This arrangement of plunger and air valve screw is termed
the dash pot.

A further control of the high speed jet is provided by the fuel metering
valve operated