EGR venturi diesel injection
First Claim
Patent Images
1. An arrangement for pre-mixing gas flow and fuel in a diesel engine, comprising:
- an air conduit having an inlet for a first gas flow and through which air flows to the engine, said air conduit having a reduced portion;
a valve body arranged to be displaced in a longitudinal direction of the air conduit in order to achieve a variable venturi effect and in this way a variable suction, the valve body creating a mixing zone; and
one or more fuel injectors for injecting fuel in the air conduit, the one or more fuel injectors positioned at or upstream from the valve body and the mixing zone, the injected fuel mixing with the gas flow in the mixing zone;
wherein fuel injected into the air conduit mixes with the gas flow to create a mixture before said mixture flows to the engine for combustion; and
wherein the fuel is diesel fuel.
1 Assignment
0 Petitions
Accused Products
Abstract
An arrangement for mixing a first and a second gas flow, for example, an inlet flow with an exhaust gas return flow in a diesel engine. An air conduit has an inlet for the first flow and an inlet for the second flow, in order to achieve the mixing. A valve body is arranged to be displaced in the longitudinal direction of the air conduit at the inlet for the second flow in order to achieve a variable venturi effect and in this way a variable suction effect and mixture of the mixed flow. One or more fuel injectors inject fuel into the air conduit to pre-mix fuel with the first and second gas flows before reaching the engine cylinders for combustion.
25 Citations
33 Claims
-
1. An arrangement for pre-mixing gas flow and fuel in a diesel engine, comprising:
-
an air conduit having an inlet for a first gas flow and through which air flows to the engine, said air conduit having a reduced portion; a valve body arranged to be displaced in a longitudinal direction of the air conduit in order to achieve a variable venturi effect and in this way a variable suction, the valve body creating a mixing zone; and one or more fuel injectors for injecting fuel in the air conduit, the one or more fuel injectors positioned at or upstream from the valve body and the mixing zone, the injected fuel mixing with the gas flow in the mixing zone; wherein fuel injected into the air conduit mixes with the gas flow to create a mixture before said mixture flows to the engine for combustion; and wherein the fuel is diesel fuel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 32)
-
-
17. An arrangement for pre-mixing gas flow and fuel in a diesel engine, comprising:
-
an air conduit having an inlet for a first gas flow and through which air flows to the engine, said air conduit having a reduced portion; a valve body arranged to be displaced in a longitudinal direction of the air conduit in order to achieve a variable venturi effect and in this way a variable suction, the valve body creating a mixing zone; a supply part having an inlet adjacent to the air conduit for introducing a second gas flow into the air conduit, the supply part positioned at or upstream from the valve body; and one or more fuel injectors for injecting fuel in the air conduit, the one or more fuel injectors positioned at or upstream from the valve body and the mixing zone, the injected fuel mixing with the first and second gas flows in the mixing zone; wherein fuel injected into the air conduit mixes with the gas flows to create a mixture before said mixture flows to the engine for combustion; and wherein the fuel is diesel fuel. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
-
-
25. A method for pre-mixing gas flow and fuel in a diesel engine, comprising the steps of:
-
supplying a first gas flow to an engine through an air conduit having a reduced portion; positioning a valve body in a longitudinal direction within the air conduit in order to achieve a variable venturi effect and in this way a variable suction, the valve body creating a mixing zone; and injecting fuel in the air conduit at a position at or upstream from the valve body and the mixing zone, the injected fuel mixing with the gas flow in the mixing zone; wherein the fuel injected into the air conduit mixes with the gas flow to create a mixture before said mixture flows to the engine for combustion; and wherein the fuel is diesel fuel. - View Dependent Claims (26, 27, 28, 29, 30, 31, 33)
-
Specification