Qip Ice 13 Electronic Injection Systems

May 5th, 2015
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In a multi-cylinder engine with a carburetor, it is difficult to obtain a uniform mixture in each cylinder. The various cylinders receive the airgasoline mixture in varying quantities and richness. This problem is called the maldistribution and can be solved by the port injection system by having the same amount of gasoline injected at each intake manifold.

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qip ice 13 electronic injection systemsLecture-13Prepared underQIP-CD Cell ProjectInternal Combustion EnginesUjjwal K Saha, Ph.D.Department of Mechanical EngineeringIndian Institute of Technology Guwahati1Gasoline InjectionIn a multi-cylinder engine with a carburetor, itis difficult to obtain a uniform mixture in eachcylinder. The various cylinders receive the airgasoline mixture in varying quantities and richness. This problem is called the maldistribution and can be solved by the port injection system by having the same amount ofgasoline injected at each intake manifold.?By adopting gasoline injection each cylindercan get the same richness of the air-gasolinemixture and the mal-distribution can beavoided to a great extent.?2Typical pattern of mixture distributionin a multi-cylinder engine3Reasons for Gasoline InjectionTo have uniform distribution of fuel in amulti-cylinder engine? To improve the breathing capacity andhence the volumetric efficiency? To reduce or eliminate detonation? To prevent fuel loss during scavenging incase of two-stroke engines?Types of Injection Systems? Gasoline direct injection (GDI)? Port-Injection(a) Timedand(b) Continuous? Manifold Injection4Groupings? The above fuel injection systems can begrouped under two heads,viz., single-pointand multi-point injection. In the single pointinjection system, one or two injectors aremounted inside the throttle body assembly.Fuel spr

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