# US 2013/0152908 A1 · Diesel-gasoline dual fuel powered combustion engine system provided with spark-assisted fouling free egr system

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- Number: US 2013/0152908 A1
- Document ID: US20130152908A1
- Status: Published application
- Kind: A1
- Application number: 13/713,640
- Filed: 2012-12-13
- Published: 2013-06-20
- Earliest claimed: 2011-12-16
- Assignees: Hyundai Motor Company
- Inventors: Dae CHOI; Hyunsung JUNG; Minyoung KI; Hyeungwoo LEE
- Web page: https://patentgrep.com/patent/US20130152908A1

## CPC

- F02M 26/50: Arrangements or methods for preventing or reducing deposits, corrosion or wear caused by impurities (arrangement or layout of EGR passages with means for cleaning or treating the recirculated gases F02M26/35; protection of EGR valves from damage F02M26/74)
- F02B 47/08: the substances including exhaust gas
- F02B 69/02: for different fuel types, other than engines indifferent to fuel consumed, e.g. convertible from light to heavy fuel
- F02D 19/0649: {Liquid fuels having different boiling temperatures, volatilities, densities, viscosities, cetane or octane numbers}
- F02D 41/0065: {Specific aspects of external EGR control (constructional details of EGR system F02M26/00)}
- F02D 41/008: {Controlling each cylinder individually}
- F02D 41/3047: {said means being a secondary injection of fuel}
- F02M 26/30: Connections of coolers to other devices, e.g. to valves, heaters, compressors or filters; Coolers characterised by their location on the engine
- F02M 26/43: in which exhaust from only one cylinder or only a group of cylinders is directed to the intake of the engine
- F02D 41/0025: {Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures}
- F02M 26/05: High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
- Y02T 10/12: Improving ICE efficiencies
- Y02T 10/30: Use of alternative fuels, e.g. biofuels
- Y02T 10/40: Engine management systems
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
- F02D: CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K31/00; conjoint control of vehicle sub-units of different type or different function, road vehicle drive control systems for purposes other than the control of a single sub-unit B60W)
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A diesel-gasoline dual fuel powered combustion engine system is provided with spark-assisted fouling free EGR system in which gasoline and air are homogeneously combined and supplied to cylinders and then a diesel fuel is injected and combusted together. The system may include: a plurality of cylinders each having a fuel injector; and an exhaust line through which flows an exhaust gas discharged as a fuel from each cylinder is combusted; wherein gasoline fuel combustion type is adapted to one or more cylinder of the plurality of the cylinders, and diesel-gasoline fuel pre-mixed combustion type is adapted to the other cylinders.

## Claims

### Claim 1

A diesel-gasoline dual fuel powered combustion engine system provided with spark-assisted fouling free EGR system in which gasoline and air are homogeneously combined and supplied to cylinders and then a diesel fuel is injected and combusted together, comprising:
a plurality of cylinders each having a fuel injector; and
an exhaust line through which flows an exhaust gas discharged as a fuel from each cylinder is combusted;
wherein gasoline fuel combustion is adapted to one or more of the plurality of the cylinders, and diesel-gasoline fuel pre-mixed combustion type is adapted to the other cylinders.

### Claim 2 (depends on 1)

The diesel-gasoline dual fuel powered combustion engine system provided with spark-assisted fouling free EGR system of claim 1, wherein an ignition plug is not installed at the plurality of cylinders.

### Claim 3 (depends on 2)

The diesel-gasoline dual fuel powered combustion engine system provided with spark-assisted fouling free EGR system of claim 2, wherein the cylinder in which is installed an ignition plug is configured to combust gasoline, and the other cylinders are configured to combust a mixture of gasoline and diesel fuels.

### Claim 4 (depends on 3)

The diesel-gasoline dual fuel powered combustion engine system provided with spark-assisted fouling free EGR system of claim 3, wherein only the exhaust gas from the cylinder in which the ignition plug is installed flows through an EGR line.

### Claim 5 (depends on 4)

The diesel-gasoline dual fuel powered combustion engine system provided with spark-assisted fouling free EGR system of claim 4, wherein a bypass valve is installed at the intermediate portion of the EGR line, and the bypass valve is configured to selectively discharge the exhaust gas from the cylinder in which the ignition plug is installed to either the side of a turbine or a post-process apparatus.