US 2014/0174696 A1 · Injector Cooling Apparatus and Method

Abstract

A system for cooling a reductant injector in an emissions module is provided. The system includes an emissions module, coupled to an engine exhaust duct, and a cooling system fluidly coupled to the emissions module. The emissions module includes a reductant system and a selective catalytic reduction (SCR) module. The reductant system includes a reductant injector having a cooling passage. The cooling system includes a reservoir tank, a supply pump fluidly coupled to the reservoir tank, and a siphon tank fluidly coupled to the supply pump and the reductant injector cooling passage. The siphon tank is disposed proximate to the reductant injector, and a gravitational elevation of a base of the siphon tank is greater than a gravitational elevation of the reductant injector.

Claims20

Dependent claims

A system for cooling an exhaust fluid injector, comprising:

an emissions module coupled to an engine exhaust duct, the emissions module including:
a reductant system including a reductant injector having a cooling passage, and
a selective catalytic reduction (SCR) module;
and
a cooling system fluidly coupled to the emissions module, the cooling system including:
a reservoir tank,
a supply pump fluidly coupled to the reservoir tank, and
a siphon tank fluidly coupled to the supply pump and the cooling passage of the reductant injector, the siphon tank being disposed proximate to the reductant injector, and a gravitational elevation of a base of the siphon tank being greater than a gravitational elevation of the reductant injector.

5 more elements

Dependencies are inferred from the claim text.

Injector Cooling Apparatus and Method

Life of this patent

Injector Cooling Apparatus and Method

Life of this patent

Abstract

Claims20