Electronic dual fuel injection system
First Claim
1. An electronic dual-fuel injection system for an internal combustion engine having a cylinder block including driving cylinders, said system comprising:
- intake manifold means operatively connected to said driving cylinders to feed fuel mixtures thereto;
an air supply assembly having a shuttle-valve body including a tubular output section connected to said manifold means for feeding air thereto;
a high grade fuel supply assembly, including an injector mounted on said output section of said air supply assembly for feeding high grade fuel to said manifold means, anda low grade fuel supply assembly including a plurality of injectors, each of said injectors being mounted on said manifold means for feeding low grade fuel to one of said driving cylinders.
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Abstract
There is disclosed an electronic dual-fuel injection system for an internal combustion engine having a cylinder block with driving cylinders. The system has an intake manifold which is connected to the driving cylinders to feed fuel mixtures to the cylinders and an air supply assembly including a shuttle-valve body connected to the manifold for feeding air into it. A high grade fuel supply assembly, which includes an injector mounted on the output section of the air supply assembly, serves for feeding high grade fuel to the manifold. A similar but low grade fuel assembly, which includes a plurality of injectors each of which is mounted on the manifold, serves for feeding low grade fuel to one of the driving cylinders. The injection system also includes a computer, connected to the two fuel supply assemblies, and temperature sensors connected to the computer and to the cylinder block to measure its temperature. The computer is programmed first to cause actuation of the high grade fuel injector for starting and warming the engine up to a predetermined temperature as measured by the temperature sensor and corresponding to the combustion temperature of the low grade fuel. It is also programmed to cause actuation of the low grade fuel injectors to supply low grade fuel to the cylinders after the combustion temperature has been reached and, thereafter, cut-off the high grade fuel supply system.
28 Citations
8 Claims
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1. An electronic dual-fuel injection system for an internal combustion engine having a cylinder block including driving cylinders, said system comprising:
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intake manifold means operatively connected to said driving cylinders to feed fuel mixtures thereto; an air supply assembly having a shuttle-valve body including a tubular output section connected to said manifold means for feeding air thereto; a high grade fuel supply assembly, including an injector mounted on said output section of said air supply assembly for feeding high grade fuel to said manifold means, and a low grade fuel supply assembly including a plurality of injectors, each of said injectors being mounted on said manifold means for feeding low grade fuel to one of said driving cylinders. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification