Fuel economy apparatus

Claim 1

An apparatus for treating combustion gases in a motor vehicle having a motor assembly including a crankcase, intake manifold, and suction intake, a fuel tank formed to include an upper part, an exhaust pipe, a regulating device disposed before the intake manifold, and gas return pipe means for coupling each of the fuel tank, crankcase, and exhaust pipe to the regulating device in fluid communication and characterized by said regulating device including a unit providing a chamber divided by a diaphragm into two sub-chambers, of which one is a vacuum sub-chamber connected by means of a connector pipe, to the suction intake of the motor, a thermostat being inserted in the connector pipe, the same sub-chamber having a compression spring lodged against said diaphragm; a stem projecting from the other side of the diaphragm having a stopper head placed in an operative relation in a mixing chamber situated in the unit, the mixing chamber having an opening to the environment, and an intermediate partition; the mixing chamber including additional openings by way of individual regulators to the upper part of the fuel tank, the crankcase of the motor, and the exhaust pipe, respectively; an outlet on the other side of the intermediate partition in the mixing chamber including a regulator for circulating recovered and mixed gas to a pipe connecting with a preheating chamber adjacent at the intake manifold of the motor, the mixing chamber being permanently joined to a gas collector chamber by means of a passage controlled by a regulator; and acceleration valve means for allowing the gas to circulate at a speed required by the motor so that the vacuum-actuated diaphragm, the regulator, and the acceleration valve means cooperate in response to predetermined operating conditions of the motor during a momentary reduction in speed to deliver a continuous flow of recovered and mixed gas to the intake manifold for recombustion resulting in improved fuel economy.

Claim 2

An apparatus for treating combustion gases in a motor vehicle having a motor assembly including a crankcase, intake manifold, and suction intake, a fuel tank formed to include an upper part, an exhaust pipe, a regulating device disposed before the intake manifold, and gas return pipe means for coupling each of the fuel tank, crankcase, and exhaust pipe to the regulating device in fluid communication and characterized by said regulating device including a unit providing a chamber divided by a diaphragm into two sub-chambers, of which one is a vacuum sub-chamber connected by means of a connector pipe, to the suction intake of the motor, a thermostat being inserted in the connector pipe, the same sub-chamber having a compression spring lodged against said diaphragm; a stem projecting from the other side of the diaphragm having a stopper head placed in an operative relation in a mixing chamber situated in the unit, the mixing chamber having an opening to the environment, and an intermediate partition; the mixing chamber including additional openings by way of individual regulators to the upper part of the fuel tank, the crankcase of the motor, and the exhaust pipe, respectively; an outlet on the other side of the intermediate partition in the mixing chamber including a regulator for circulating recovered and mixed gas to a pipe connecting with a preheating chamber adjacent at the intake manifold of the motor, the mixing chamber being permanently joined to a gas collector chamber by means of a passage controlled by a regulator; and acceleration valve means for allowing the gas to circulate at a speed required by the motor so that the vacuum-actuated diaphragm, the regulator, and the acceleration valve means cooperate in response to predetermined operating conditions of the motor during a momentary reduction in speed to deliver a continuous flow of recovered and mixed gas to the intake manifold for recombustion resulting in improved fuel economy.