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Operation method and system of reciprocating I.C. engine

An internal combustion engine, fuel technology, applied in engine operation, internal combustion piston engine, charging system, etc., can solve the problems of reduced output, unsuccessful spontaneous combustion, etc.

Inactive Publication Date: 2003-12-24
MITSUBISHI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mixing of water dissolved in fuel may lead to unsuccessful auto-ignition and reduced output

Method used

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  • Operation method and system of reciprocating I.C. engine
  • Operation method and system of reciprocating I.C. engine
  • Operation method and system of reciprocating I.C. engine

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Embodiment Construction

[0074] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it should be noted that unless otherwise specified, the dimensions, materials and relative positions of the components in the embodiments are to be interpreted as illustrative only and do not limit the scope of the present invention.

[0075] Fig. 1 (A), (B) shows an example of the structure surrounding the combustion chamber of a reciprocating internal combustion engine, especially a 4-stroke cycle diesel engine, according to an embodiment of the present invention. The engine 1 comprises a cylinder 10 with a cylinder liner 11 and a cylinder head 12, a piston 14 equipped with a piston ring 13 and a connecting rod 15 which transmits the reciprocating force of the piston 14 to the load through a crankshaft not shown in the drawings. An injection nozzle 16 is fitted in the central portion of the cylinder head 12, and an intake valve 17 for ...

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Abstract

The present invention provide a feedback combined system of a reciprocating internal combustion engine, in which, in order to increase output and thermal efficiency by increasing fuel supply without increasing the maximum combustion temperature than the conventional level and concurrently reduce emissions such as NOx, a heat exchanger is provided downstream the exhaust turbine connected to the exhaust collector, sub-critical water of pressure of between 18MPa and 22.1 MPa(critical pressure) and temperature of between 250 DEG C and 580 DEG C or super-critical water is generated by the heat exchange of water supplied to the heat exchanger with the exhaust gas, said sub- or super-critical water is injected into the cylinder in the range of 90 DEG before the top dead center and 30 DEG after the top dead center and fuel is injected so that the air excess ratio at the maximum output is 1 SIMILAR 2.5 and the maximum combustion temperature is 1600 SIMILAR 2000 DEG C.

Description

technical field [0001] The present invention relates to a method of operating an internal combustion engine and a system thereof to increase output, improve efficiency, and improve efficiency by injecting sub- or super-critical water into the cylinders of the internal combustion engine with increased fuel injection quantities and suppression of maximum combustion temperatures at conventional levels Reduce exhaust emissions. Background technique [0002] Medium / large reciprocating internal combustion engines, due to their high cost-efficiency, are widely introduced into the market for propulsion of boats, general industrial, commercial purposes, etc. However, user demands for cost-efficiency and eco-friendliness have become increasingly intensified, and further reductions in cost per unit output power, fuel consumption, and harmful emissions have become urgent. The cost reduction (compactness and high power) by increasing the power of the internal combustion engine has becom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B37/00F02B3/06F02B41/10F02B47/02F02D19/00F02D19/12F02D23/00F02D41/40F02M21/02F02M25/022
CPCF02D41/402Y02T10/123Y02T10/163Y02T10/144F02M21/0206Y02T10/16F02B41/10F02B47/02F02B3/06F02D41/401Y02T10/44F02D2041/389F02M21/0215F02B2275/14F02M21/0275F02M25/03F02B37/001F02M25/0227F02M25/038Y02T10/12Y02T10/40F02D19/12
Inventor 三桥真人伊藤邦宪柚木晃弘石田裕幸嶋田隆文
Owner MITSUBISHI HEAVY IND LTD