Controller for turbocharger system for internal combustion engines

Abstract

Abstract The invention is concerned with an improvement in a turbocharger system for an internal combustion engine having an exhaust manifold and an intake manifold adjacent to the engine. The turbocharger system includes a turbine communicating with the exhaust manifold and driven by gases therefrom. The turbine drives a compressor and has an output which communicates with the intake manifold. A fuel burner chamber forms a part of the turbocharger system, said fuel burner chamber having an input for receiving compressed air, an output through which expanded gases pass and a spark igniter. The turbocharger system further includes means communicating the output of the compressor to the input of the fuel burner chamber, means communicating the output of the fuel burner chamber into and through the exhaust manifold, means for supplying a variable quantity of fuel from a fuel reservoir to said burner chamber and means responsive to intake manifold pressure to vary the quantity of fuel delivered to the burner. The improvement of the invention comprises means for preventing supply of said variable quantity of fuel to said burner unless said fuel is at a fuel pressure above the pressure in said burner and means responsive to said fuel being at least equal to a selectively set minimum fuel pressure value for activating said spark igniter in said burner chamber. The improvement preferably includes means responsive to intake manifold pressure for selectively shunting fuel from said fuel supplying means to said reservoir only until said intake manifold pressure is at least equal to a selectively set minimum value. Also preferably part of the improvement are means responsive to temperature of said burner chamber for deactivating said spark igniter when said temperature is at least equal to a selectively set minimum value.

Inventors

• 👤 Arthur A. Zuhn

Bibliographic Details