초록

A fluid-cooled mount for an injector; suitable, for example, for mounting an automotive fuel injector on a combustion exhaust system to inject an NO x reducing fluid into the exhaust system.

대표청구항 ▼

1. A fluid-cooled mount for an injector, the injector having a fluid inlet for receiving a fluid to be dispensed through the injector, a closed body, and a nozzle for dispensing the fluid, the mount comprising:(a) a mounting block for receiving the injector, having an interior and an exterior and:(i

1. A fluid-cooled mount for an injector, the injector having a fluid inlet for receiving a fluid to be dispensed through the injector, a closed body, and a nozzle for dispensing the fluid, the mount comprising:(a) a mounting block for receiving the injector, having an interior and an exterior and:(i) an injector body receiving chamber and an injector nozzle receiving chamber within the interior of the block, continuous with one another at a surface lying in the block, the injector body receiving chamber extending through a first exterior surface of the block and the injector nozzle receiving chamber extending through a second exterior surface of the block,the injector body receiving chamber being configured to receive the body of the injector;the injector nozzle receiving chamber being configured to receive the nozzle of the injector when the body of the injector is received in the injector body receiving chamber;the fluid inlet of the injector lying exterior to the block when the body of the injector is received in the injector body receiving chamber;(ii) a first seal configured to prevent fluid flow between the injector body receiving chamber and the exterior of the block when the injector is received in the block;(iii) a second seal configured to prevent fluid flow between the injector body receiving chamber and the injector nozzle receiving chamber when the injector is received in the block;(iv) a fluid inlet connecting the injector body receiving chamber to the exterior of the block;(v) a fluid outlet connecting the injector body receiving chamber to the exterior of the block; and(b) a manifold connecting the fluid inlet of the block to the fluid inlet of the injector. 2. The mount of claim 1 where the exterior surface of the block is finned. 3. The mount of claim 1 where at least a part of the manifold lies within the block. 4. The mount of claim 1 where the manifold lies entirely outside the block. 5. The mount of claim 1 further comprising:(c) a clamp connected to the block and securing the injector to the block when the injector is received within the block. 6. The mount of claim 1 where the clamp securing the injector to the block is a strap fastened at each end to the block. 7. A fluid-cooled injector comprising the fluid-cooled injector mount of claim 1 having an injector received therein. 8. A fluid-cooled injector system, comprising:(a) the fluid-cooled injector of claim 7;(b) a fluid reservoir for fluid to be dispensed through the injector;(c) an inlet pipe connecting the fluid reservoir to the manifold, the inlet pipe having a pump operatively connected therein to pump fluid from the reservoir to the manifold, and(d) an outlet pipe connecting the outlet to the fluid reservoir;such that, when the system is used, fluid is pumped from the fluid reservoir to the manifold through the inlet pipe, a part of the fluid flowing through the manifold to the fluid inlet of the injector to be dispensed by the injector, and the remainder of the fluid flowing through the inlet, the injector body receiving chamber, and the outlet, and returning through the outlet pipe to the fluid reservoir. 9. A combustion exhaust purification system comprising:(a) an exhaust pipe having one end connected to a combustion exhaust source;(b) a NO x reducing catalyst positioned in the exhaust pipe;(c) the fluid-cooled injector system of claim 8 having the fluid-cooled injector mounted on the exhaust pipe between the combustion exhaust source and the NO x reducing catalyst, where the fluid is a NO x reducing fluid. 10. The combustion exhaust purification system of claim 9 further comprising a heat shield between the exhaust pipe and the fluid-cooled injector.