Electronic pressure reducer or regulator unit for feeding...

F - Mech Eng,Light,Heat,Weapons – 02 – M

Patent

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F02M 21/02 (2006.01) F02D 19/02 (2006.01)

Patent

CA 2602598

Provided in a gas-feed system, in particular a system for supplying methane or hydrogen to an internal-combustion engine, is an electronic pressure--reducer or pressure-regulator unit (43), integrated in which are both a pressure-reducing valve (7) for reducing the pressure of the gas coming from the fuel tank (3) to a value suitable for supplying a distribution manifold or rail (2) and a modulating solenoid valve (25) that functions as modulator of the degree of pressure reduction performed by the pressure--reducing valve (7). Likewise made in the body (44) of said unit are passages that provide the communications of said valves (7, 25) with one another and of each of said valves with the inlet (61) and the outlet (55) for the gas in said unit. Furthermore, the unit (43) incorporates an electronic control module (77) for controlling the modulating solenoid valve (25).

Dans la fourniture d'un système d'alimentation en gaz, en particulier un système pour l'alimentation en méthane ou en hydrogène à un moteur à combustion interne, il y a un détendeur de pression électronique ou un régulateur de pression (43), intégré dans lequel se trouvent une vanne de détente de pression (7) pour réduire la pression des gaz provenant du réservoir à carburant (3) à une valeur appropriée pour fournir un collecteur de distribution ou un rail (2) et une électrovanne de modulation (25) qui fonctionne comme un modulateur du degré de réduction de pression effectuée par la vanne de détente de pression (7). De même, dans le corps (44) de ladite unité, il y a des passages qui fournissent les communications desdites vanne et électrovanne (7, 25) entre elles et de chacune d'elles avec l'entrée (61) et la sortie (55) du gaz dans ladite unité. De plus, l'unité (43) intègre un module de commande électronique (77) pour la commande de l'électrovanne de modulation (25).

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