Spark Ignited Natural Gas Engine Technology

Transcription

1 Spark Ignited Natural Gas Engine Technology Clean Fleets Technology Conference Sugar Land, TX, June 2014 Jorge Gonzalez Regional Manager

2 Agenda Corporate Overview Natural Gas Technology Evolution Products and Markets Spark Ignited vs. Compression Ignited Engines Efficiency Factors Savings Model Durability 2

3 Cummins Westport Inc. (CWI) A Joint Venture of Westport & Cummins Cummins Inc. 50% 50% Delivered over 35,000 engines. New 10 year Agreement

4 CWI = 6 to 12 litre automotive natural gas engine company, leveraging Cummins processes Product Engineering Manufacturing Sales Warranty Parts & Service CWI Engineering CWI Product Management CWI Segment Leads & Regional Managers CWI Warranty Group CWI Customer Support Cummins Tech Center Cummins VPI Process Cummins Plants Cummins Account Teams & Distributors Cummins Warranty Cummins Distributors 4

5 Alternative Fuel Engines in NA Cummins Westport ISLG (CNG or LNG) Spark ignition, up to 320 HP, 1000 lb-ft torque. Cummins Westport ISX12G (CNG or LNG) Spark ignition, up to 400 HP, 1450 lb-ft torque. Volvo s D13-LNG (Liquefied Natural Gas) Compression ignition, up to 455HP, 1750 lb-ft torque, LNG with 5% diesel pilot ignition. Volvo s D13-DME (Dimethyl Ether) limited production. Compression ignition, up to 460 HP, 1750 lb-ft torque. Conversion systems for dual-fuel systems: DualFlex+ (Detroit Diesel 12 and 14L), EcoDual (ISX on a glider), Clean Energy Fuels (ISX), Landi Renzo (Detroit Diesel S L) Cummins Westport Feb

6 Natural Gas Engine Technology Evolution 1. Stoichiometric First technology used in HD natural gas engines Low NOx with TWC Combustion temperatures limit power density, efficiency and durability 2. Lean Burn Introduced in 90s NOx control is in-cylinder Lean combustion reduces in cylinder temperatures improving power density/efficiency Proven reliability/durability in heavy duty applications Capable of EPA 07 Euro4/5 emissions Percent Maximum Nox Rich Stoichiometric Lean Air / Fuel Ratio 3. Stoichiometric with Cooled EGR Combines & Improves the best attributes of Stoichiometric & Lean Burn combustion TWC for NOx control - Sub-EPA 2010 emissions with passive aftertreatment Cooled EGR in place of air in Lean Burn reduces in cylinder combustion temperatures Improved low end torque and fuel economy EGR Lean Burn Cummins Westport Confidential 6

7 Benefits of Stoichiometric EGR Combustion Increased power density Torque curves are virtually the same as diesel Diesel-like transient response/performance More torque at idle than lean burn (+34%) Increased thermal efficiency 5% fuel economy improvement vs. lean-burn natural gas engines Lower CO2 emissions (GHG benefit) Decreased emissions Meets US EPA 2010 emission standards Lower carbon (greenhouse gas) emissions Quiet - ISL G is 9.9 decibels quieter than ISL9 at Idle/no load. Simple, passive, maintenance-free three way catalyst aftertreatment 7

8 CWI Combustion Technology Spark Ignited Stoichiometric with Cooled EGR Spark Plug Stoichiometric EGR (SEGR) Three Way Catalyst Architecture Three Way Catalyst Spark Ignited Fuel, EGR and air are premixed outside the cylinder Spark plug ignites the mixture Charge Air Cooler EGR Cooler Fuel Air flow controls fuel flow Throttle Air/Fuel ratio controls emissions 8

9 2010 Engines Aftertreatment Comparison SCR Catalyst Particulate Filter 2010 Diesel Heated Urea Tank Urea Dosing Control Unit ECM Cummins TWC Three Way Catalyst 9

10 Three Way Catalyst TWC reduces three harmful emissions: NO X, CO, HC End products are: N 2, CO 2, H 2 O Packaged as part of muffler Simple, passive device O 2 Sensor connects to ECM Consistent performance across all duty cycles Catalyst Inlet NO X CO HC Catalyst Outlet N 2 CO 2 H 2 O ISL G / ISX12 G TWC

11 Cummins Westport Product Line B Gas Plus ISB6.7 G C Gas Plus ISL G ISX12 G ISB5.9 G ISC8.3 G Liter 6.7 Liter 8.3 Liter 8.9 Liter 11.9 Liter hp hp hp hp hp Euro 5, EEV EPA 2013, Euro 6 Euro 3, 4 EPA 2013 EPA 2013 Development started in 2012; 2016 launch Euro 5 by 2014 Euro 5, EEV Up to 37,500 miles/year and 30,000Kg GVW Up to 36,000 Kg GVW 11

12 Key Markets in North America Application Transit and Shuttle Bus Refuse Collection Truck and Tractor School Bus, Street Sweeper, Package Delivery, Market Size ~ 5 K Annual Market ~ 5 K Annual Market ~ 300K Annual Market ~ 35K Annual Market Engine ISL G ISB6.7 G (2015) ISL G ISX12 G (2013) ISL G ISX12 G (2013) ISB6.7 G (2015) ISL G ISB6.7 G (2015) OEM with CWI engine available NABI New Flyer Gillig ElDorado Nova Bus Cab Over Autocar Crane Carrier Peterbilt Mack ALF Freightliner Kenworth Peterbilt Mack Volvo Navistar Blue Bird Thomas Elgin 12

13 CWI North America Engines - Cumulative Over 30,000 CWI engines have been sold in North America through Dec 2013, with 30% in transit and 33% in refuse CWI Confidential

14 Spark Ignited Engines vs. Compression Ignited Engines Nikolaus Otto Rudolph Diesel 14

15 Internal Combustion Efficiency Factors Pumping Efficiency (intake) Pumping Efficiency (exhaust) Combustion Efficiency Compression Ratio Air / Fuel Ratio Mechanical Friction 15

16 Efficiency Factors Comparison Efficiency Factors Natural Gas (SI) Diesel (CI) Advantage Pumping efficiency (intake) Throttled No throttle Diesel Combustion efficiency: Compression Ratio 11/1 18/1 Diesel A/F Ratio 15/1 up to 23/1 Mechanical friction Pumping efficiency (exhaust) 30/1 up to 50/1 Same mechanical hardware 3 way catalyst DPF/SCR Diesel Similar Similar Overall impact: Expect 10-15% less efficiency for spark ignited natural gas engines. 16

17 Cost Savings Comparison Diesel vs. NG Cummins Westport Feb

18 Value Spec Summary Note: ISL G not recommended above 60,000 miles per year Cummins Westport Feb

19 Durability Cummins Westport expects our natural gas engines to have the same durability as their diesel parents. Common design standards Common engineering validation standards Common components Common assembly line 19

20 Summary Stoichiometric EGR technology provides Diesel like performance, ultra-low emissions with simple passive after treatment. Spark ignited natural gas engines provide significant cost savings per mile. Factory-built natural gas engine durability = Diesel 20

21 Considering NG can lead to many questions Do NGVS make sense for me? What about Driver Training? Where do I find fuel? What engine should I buy? What about parts & service for NG engines? Is my shop ready for NG? Cummins Westport Confidential April

22 Cummins Westport Natural Gas Playbook Available only from Cummins, the 5 step Playbook provides information and resources for the key steps involved when implementing natural gas into a fleet. Contact your Cummins or Cummins Westport representative for details. 1 Assess Fleet profile Routes & loads Environment & terrain Current fuel profile NG fuel availability Fuel price expectations Service capability Incentives Regulations & codes Facility requirements Previous experience Business case Risks & mitigation 2 Specify OEM Chassis Engine Transmission & gearing Fuel type & quality Fuelling procedure NG fuel system type, capacity & configuration Safety equipment Warranty package Delivery dates 3 Prepare Confirm fuel availability Confirm service & parts availability Complete facility modifications Obtain permits, licenses & approvals Operations & maintenance training Safety training Fire & emergency response plan Define driver training process Define problem resolution processes 4 Implement Conduct fuel quality test Conduct pilot truck test Confirm fuel economy & range Develop rollout plan Truck delivery & PDI Conduct driver training Conduct fuelling training Test problem resolution processes Infant care support Kick off event 5 Operate & Maintain Conduct daily maintenance & inspections Monitor fuelling procedures Monitor fuel consumption Conduct scheduled maintenance & inspections Conduct scheduled fuel quality inspections Manage & resolve problems 22

23 Great source of information about natural gas engines and vehicles. Features the Natural Gas Academy, a series of instructional videos Designed to provide a general overview of natural gas as a fuel whether it is compressed (CNG) or liquefied (LNG), and how it is used with vehicles. Cummins Westport Feb

24 CWI Contact Information Bill Boyce, Regional Manager - East bill.boyce@cummins.com Office: (330) Cell: (330) Jerry Johnson, Regional Manager-West jerry.j.johnson@cummins.com Cell: (303) Jorge Gonzalez, Regional Manager - Texas and Mexico jorge.gonzalez@cummins.com Cell: (512) Jeff Campbell, Director, Marketing jeff.campbell@cummins.com Office: (604) Cell: (604)