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Split-cycle engine with dual spray targeting fuel injection

A fuel injector, engine technology, applied in combustion engines, low pressure fuel injection, fuel injection devices, etc., can solve problems such as poor fuel delivery

Inactive Publication Date: 2011-06-22
SKADERI GRUP LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, various parameters of the fuel injector 28 and injection holes used are critical to ensuring proper delivery of fuel to the expanding cylinder, wherein variations in these parameters may result in less than optimal fuel delivery

Method used

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  • Split-cycle engine with dual spray targeting fuel injection
  • Split-cycle engine with dual spray targeting fuel injection
  • Split-cycle engine with dual spray targeting fuel injection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0058] refer to figure 2 and image 3, for clarity, the helical passage 38 (herein referred to as the helical passage) is the connecting passage (port) that in a conventional engine would normally connect the inlet manifold to the intake valve of the cylinder head. The downstream portion of the helical passage 38 includes a generally rectilinear extension 39 integrally connected to a helical end 40 provided on an intake valve 41 . The intake valve 41 includes a valve stem 42 and a valve head 43, wherein the valve head 43 opens toward a cylinder (not shown). The flow area in the helical end 40 is arranged in a funnel 44 descending in the circumferential direction around a valve stem 42 which is supported in a bore 46 in the end 40 . The funnel 44 spirals at least one-third of a turn around the valve stem 42, and preferably between one-half and three-quarters of a turn, so that incoming air must revolve around the valve stem 42 before entering the cylinder. The height of the ...

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PUM

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Abstract

An engine includes a rotatable crankshaft and an expansion piston slidably received within an expansion cylinder and operatively connected to the crankshaft. A crossover passage including walls connects a source of high pressure gas to the expansion cylinder. A crossover expansion (XovrE) valve is operable to control fluid communication between the crossover passage and the expansion cylinder. The XovrE valve includes a valve head and a valve stem extending from the valve head. A fuel injector operable to inject fuel into the crossover passage includes a plurality of spray holes disposed in a nozzle end and aimed at an at least one target at which fuel emitting from the spray holes is directed to form at least one spray pattern. The at least one target is located above a seated position of the XovrE valve head and between the walls of the crossover passage and the XovrE valve stem.

Description

technical field [0001] The present invention relates to internal combustion engines. More precisely, the present invention relates to a split cycle engine having fuel injectors that produce a dual spray pattern. Background technique [0002] For clarity, the term "conventional engine" is used in this application to denote an engine in which all four strokes of the well-known Otto cycle (i.e., intake stroke, compression stroke, expansion stroke, and exhaust stroke) are included in each cycle of the engine. An internal combustion engine in a piston / cylinder combination. Each stroke requires half a revolution of the crankshaft (180 degrees crank angle (CA)), and two full revolutions of the crankshaft (720 degrees CA) to complete a full Otto cycle in each cylinder of a conventional engine. [0003] Furthermore, for the sake of clarity, the term "split-cycle engine" as applied to engines disclosed in the prior art and referred to in this application is defined as follows: [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B75/20
CPCF02B31/082F02B2023/108Y02T10/146F02F1/4228F02B31/02F02B2023/103F02M61/1806F02B33/22F02M69/044F02B33/44F02F1/4235F02B3/02Y02T10/12F02B31/085F02B31/042F02B75/20F02M61/18F02M61/14
Inventor 福特·菲利普斯
Owner SKADERI GRUP LLC
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