I. CNG Bus System Engine - gob.mx · PDF fileItems Q-Diesel Q-CNG Remark ENG SIZE ... ECM Air UEGO Sensor NGTP MAP MAT PTP Check Valve ... It is loacated right beside of a driver

Vitesse Motors, S. de R.L. de C.V.

http://www.hyundaimex.com, [email protected] 01-800-1200-BUSMéxico, D.F.: Calzada Vallejo 638, Col. Industrial Vallejo, Delegación Azcapotzalco, C.P.02630

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I. CNG Bus System _ EngineI. CNG Bus System _ Engine

Items Q-Diesel Q-CNG Remark

ENG SIZE(L×H×W) 1481.9×1041.8×1156.6 1481.9×1014.6×1156.6

WeightDRY (kg) 990 998

WET (kg) 1035 1043

Bore×Stroke(mm) 130×140 130×140

Displacement (cc) 11,149 11,149

Pressure Ratio 17:1 11.5:1

rpmIdle 600 600

HIGH 2420 2450

Fuel System I/P:Bosch PS 3S WOODWARD(USA)CNG KIT

Lean BurnControl

TurboCharger TD08H-28M-18CM² TF08L-24M-18CM² Water Cooling

Q CNG G CNGEngine Room



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Recepticle

FMV

ECM

Air

UEGOSensor

NGTP

MAP

MAT

PTP

Check Valve

Mixer

CNG cylinder

High Lock OffValve

NGTT Heat ExangerThermostat

Brarometer

Intercooler

Air Regulator

Acceleration Pedal

BALL V/V

ICMThrotle Body

Filter

I. CNG Bus System Layout _ Fuel SystemI. CNG Bus System Layout _ Fuel System

PRD

Low Lock OffValve

Pressure Gauge

Gas Regulator Ignition CoilIgniton Plug



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Tank

Heat Exchanger

Regulator

Spark Plug

F/Metering V/V(NGT/NGP)(L/P Lock-off V/V)

Mixer Assembly

H/P Lock-off V/V

NGTP

PTP

MAP/MAT

Gas Relief V/V Line

T/Body Assembly

Air

Barometricsensor

8~10Bar ↓

25~100Bar

40�↓

NGTT

Fuel Thermostat

I. CNG Bus System Layout _ Fuel LineI. CNG Bus System Layout _ Fuel Line



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I. CNG Bus System _ CNG GasI. CNG Bus System _ CNG Gas

1.CNG is less likely to auto-ignite on hot surfaces, since it has a high auto-ignition temperature (540 °C) and a narrow range (5%-14%) of flammabilit y.

2.Less pollution and more efficiency: CNG emits significantly less pollutants such as carbon dioxide (CO2), unburned hydrocarbons (UHC), carbon monoxide (CO), nitrogen oxides (NOx), sulfur oxides (SOx) and particulate matter (PM), compared to petrol.

NOx

CNG Diesel

60 %

CNG Diesel

100 %

Smoke

CNG Diesel

90%

PM



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Type Type1 Type 2 Type 3 Type 4

Cylinder

Composite

Metal

Glass Fiber

Resin Impregnated

Continuous Filament

With Metal Liner

(Hoop-Wrapped)

Carbon Fiber

Resin Impregnated

Continuous Filament

(Full-Wrapped)

Carbon Fiber

Resin Impregnated

Continuous Filament

(Full-Wrapped)

Liner Metal Metal Aluminum Plastic

Weight 94kg 89kg 45kg 39kg

LoadDistribu

100:0(Liner:Composite)

55:45 20:80 0:100

I. CNG Bus System _ CylinderI. CNG Bus System _ Cylinder

TYPE 2

Liner

Composite

Hoop Wrapping

Liner

Primer

Protective

TapeTop Coating

Composite

Type 2 Type 2



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GIF Solenoid ValveExperation Date (15 years life time) PRD(Pressure Relief Divice) Valve

I. CNG Bus System _ Cylinder & Cylinder ValveI. CNG Bus System _ Cylinder & Cylinder Valve

Solenoid Valve (G , Canada)Manual Valve (VTI, German)



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� Side impact bar to secure cylinders from a collision

� Safety distance 210mm sececured from outside of body

� PRD(Pressure Relief Device) installed on the cylinder

valve to protect cylinders from a fire

� Excess flow valve embeded into the cylinder valve to limit

the gas flow in an incident

I. CNG Bus System _ Safety DeviceI. CNG Bus System _ Safety Device



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� High Pressure Lock Off Valve(HPLO)

Prevent high pressure gas flow while an engine is off both on purpose and in an accident.It turns off

after 5 seconds if an engine doesn’t start.

� Low Pressure Lock Off Valve(LPLO)

Prevent low pressure gas flow while an engine is off both on purpose and in an accident.It protects fuel

metering valve(injector assembly) and low pressure lines.

I. CNG Bus System Safety DeviceI. CNG Bus System Safety Device

Low Pressure Pressure increases up to cylinder’s

O-ring

Main Plunger

Pilot seat

Solenoid Force

High Pressure

F

CrankingSolenoid Volatage (20~22V)

High Pressure

Engine runningSolenoid Volatage (0V)

High Pressure

HPLO & Plunger

FMV LPLO & Plunger



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� Protective Net

It protects cylinders from attack of

road debris and gravels.


� Ventilation Holes on Side Flaps

They allow qucik ventilation of leakage

and stimulate the wind flow of cylinder

assembly.



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� Recharging Switch

It prevents cranking of engine while

recharging.

� Emergency Switch

It is loacated right beside of a driver

allowing to turn off all CNG system

immediately.



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� Recepticle

It prevents back flow of gas.

� Main Check Valve

It prevents back flow of gas.

Perch

Retaining Ring

Metal

Cored Seal



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� Fuel Filter

It screens foreign materals and some potion of

compressor oil from gas.

� Manual Ball Valve

It prevents whole gas flow right after the cylinder

assembly

Item Maintenance

Oil drain Every 3,000km or necessary

Element replacement

Every 9,000km or when replacing engine oil

Caution: Be sure to consume the gas in fuel line completely before oil drain or replacing fuel filter.Oil outlet

Fuel filter

Close



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Korea CNG Vehicle StatusKorea CNG Vehicle Status

Based on 31May12

Division Type of Vehicle Registration Number

1

Car

Non-Business 4,085

2 Business 1,156

3Van

& Bus

Non-Business 228

4 Business 28,082

5

Truck

Non-Business 1,103

6 Business 3

Total 34,567

�. Korea Safety Management System�. Korea Safety Management System



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USAUSA FranceFrance ItalyItaly

InspectionInspection

MethodMethod

Detailed Visual Inspection

- 3 year cycle

Detailed Visual Inspection

- 3 year cycle(From 2003)

Remove Detailed Inspection

(Hydrostatic, Confidential

Test) – Abolition(from 2003)

Remove

Detailed Inspection

-4 year Cycle

(From 2007)


ItemsItemsCylinder, Gas Facilities and

Fuel System

Inspection FeeInspection Fee -- ��2000 USD2000 USD


AgencyAgencyBus Company

Cetim(Government

Certification Authority)SFBM(Government

Certification Authority_

Recognized StandardRecognized Standard Authorized Inspection AgencyAuthorized Inspection Agency

USA : DOT, CGA, ANSIUSA : DOT, CGA, ANSI DDT Inspection Agency

Europe : ECEEurope : ECE CE Marking Inspection Agency

Japan : Japan : High Pressure Gas Security LawHigh Pressure Gas Security Law High Pressure Gas Security AssociationHigh Pressure Gas Security Association

Australia : ASAustralia : AS Australian Government Certified Inspectors

Inspection System ComparisionInspection System Comparision

Authorized Inspection AgencyAuthorized Inspection Agency

�� 5500 USD5500 USD

Cylinder, Gas Facilities and

Fuel System

Cylinder, Gas Facilities and

Fuel System

�. Safety Management System�. Safety Management System



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Inspection Station Inspection Station

Districts2013 Expected

Inspection

Inspector(Inspectionbus/person)

Inspection Station(22 Locations)

TS FacilityBusiness

TripBooth(Capacity)

Seoul,Gangwon,Gyeonggi Northen

4,36313

(336)Seongsan, Nowon,Gangdong, Wonju

Chuncheon 9(4,000)

Incheon, Gyeonggi Souther

2,0687

(296)Incheon, W-Suwon

Seongnam, Gwangju

6(3,000)

Busan, Ulsan, Gyeongnam

1,2064

(302)Jure, Changwon

(Daweoo:800)Ulsan 4(2,000)

Daegu,Gyeongbuk 7393

(246)Suseong, Pohang - 3(1,500)

Gwangju, Jeonbuk Jeonnam

6054

(151)Gwangju, Jeonju(Hyundai:3,000)

Suncheon, Mokpo,Iksan

6(3,000)

Daejeon,ChungbukChungnam,

4732

(237)Sintanjin ,Cheonan Cheongju 4(2,000)

Total(Eight Districts)

9,45433

(average283)

14Locations

8Locations

32(15,500)

Inspection Facilities

Registration /LocationRegistration /Location

Gangwon(316)

Chungnam (359)

Chungbuk (358)

Daejeon (944)

Gyeongbuk (575)

Daegu (1604)

Ulsan (656)

Busan (1811)

Gyeongnam (1182)

Jeonbuk (681)

Gwangiu (987)

Jeonnam (552)

CNG Bus Registration : 26,824

Seoul (8341)Incheon (2297)Gyeonggi (6,161)

�. Korea Safety Management System�. Korea Safety Management System

Documents

I. CNG Bus System Engine - gob.mx · PDF fileItems Q-Diesel Q-CNG Remark ENG SIZE ... ECM Air UEGO Sensor NGTP MAP MAT PTP Check Valve ... It is loacated right beside of a driver