Internal combustion engine and method for controlling such internal combustion engine

An internal combustion engine, fuel technology, applied in engine control, internal combustion piston engine, combustion engine and other directions, can solve problems such as low thermal efficiency

Active Publication Date: 2016-11-30
VOLVO CAR CORP
View PDF8 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The peak thermal efficiency of a spark ignition (SI) engine can be 32% in an automotive applicatio

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Internal combustion engine and method for controlling such internal combustion engine
  • Internal combustion engine and method for controlling such internal combustion engine
  • Internal combustion engine and method for controlling such internal combustion engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] figure 1 There is shown a schematically represented vehicle 10 comprising an internal combustion engine 11 connected in this example to a transmission (not shown) for driving a pair of front wheels. The vehicle 10 includes a first fuel tank 12 connected to an engine 11 via a first fuel supply line 13 . The engine 11 is further connected to the water tank 14 through a water supply pipeline 15 and a water return pipeline 16 . Finally, the engine 11 is connected to a second fuel tank 17 for the reformed fuel produced by the engine 11 , said connection comprising a fuel collection line 18 and a second fuel supply line 19 .

[0053] figure 2 A schematically illustrated internal combustion engine according to the invention is shown, the engine 11 being operable in six-stroke mode. The engine 11 includes at least one cylinder 20 (one shown) with an intake duct 25 and an exhaust duct 32, each cylinder 20 having a reciprocating piston 21 and at least one intake port for intr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The disclosure relates to a method for operating an internal combustion engine in a six-stroke mode, wherein the engine comprises at least one cylinder (20) with a reciprocating piston (21), each cylinder having at least one inlet and outlet valve (22, 23). The method involves performing a first stroke where a gas comprising at least air is induced into a combustion chamber (24) from an intake conduit (25); a second stroke where the gas and injected fuel is compressed; a third stroke where the compressed fuel/gas mixture is expanded following an ignition; a fourth stroke where combusted exhaust gas is expelled through a catalyst body (26) into a first exhaust conduit (27); a fifth stroke where pressurized fuel and pressurized heated water is injected into the combustion chamber (24) to be expanded; and a sixth stroke where steam and gaseous fuel mixture is expelled through the catalyst body (26) into a second exhaust conduit (28).

Description

technical field [0001] The invention relates to an internal combustion engine and a method of operating such an internal combustion engine in six-stroke mode. Background technique [0002] Conventional motor vehicles with internal combustion engines operate on a four-stroke cycle, also known as the Otto cycle. One problem with internal combustion engines is the low thermal efficiency of the Otto cycle. Thermal efficiency is defined as the useful work output by an engine divided by the fuel consumed at its lower heating value. The peak thermal efficiency of a spark ignition (SI) engine may be 32% in automotive applications, but the same engine may only be 15-20% or less thermally efficient at its normal operating point. In the case of 20% thermal efficiency, 80% of the thermal energy in the fuel is discarded as waste heat and cannot be converted into useful work. In conventional engines, whether the engine is air-cooled or liquid-cooled, this heat is lost through the exhau...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F02B75/02F02M25/025F02B47/02
CPCF02B47/02F02B75/021F02M25/025F02B2720/128C01B3/38F02M25/03F02M31/16C01B2203/0233F01K5/00Y02P20/129Y02T10/12F01N5/02F02D41/0025
Inventor F·埃克斯特伦
Owner VOLVO CAR CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap