HCCI Diesel Engine Design, HCNG Engine Development India, Euro 4 Engine Emission Standards, Euro 6 Emission Solution, Vehicle Emissions Regulations, Euro 4, Euro 5, Euro 6

ARAI has increasing focus on R&D business. A large expansion plan is on anvil to bring up the institute’s competency & infrastructure to meet immediate and future state-of-art design and Testing challenges. Few of the ongoing projects are

	Study of HCNG (H2+CNG) blends & Develop a 6-cylinder Engine Compliant to Euro-5 Norms
	Development of a HCCI Diesel engine to meet EURO-4 and EURO-5 emission Norms
	Design & development of a high specific power 3-cylinder diesel engine with Euro-4 & Euro-5 targets
	Development of Dual Fuel CNG-Diesel engine complying Euro-4 emission norms

6-cyl HCNG engine development Key features

	Injection system
	Lean-burn & Stoichiometric combustion
	engine optimization on 5 %, 10 %, 15 %, 20% and 30% (Hydrogen + CNG) blends
	Emission Targets : Euro 5 with 40 % margin

HCCI – ADVANCED COMBUSTION CONCEPT

Homogeneous Charge compressed ignition combustion concept is being extensively researched for next generation engines to meet Ultralow Nox and PM emissions and better fuel economy, all Simultaneously. Major advantages being close to DI engine performance and multifuel operation

4-cyl HCCI diesel engine for Euro-4 & Euro-5

	Development of HCCI combustion engine
	power & efficiency performance comparable to base diesel combustion
	Stage 1 : EURO-4 emission solution with low loading after-treatment devices
	Stage 2 : Euro-5 compliance
	Closed Loop Control
	Hybrid combustion strategy

High Performance 3 Cylinder Engine (EURO IV / V)

	Small light commercial vehicles
	Utility vehicles
	Small Passenger cars
	Downsized engine suitable for Hybrid vehicles

GOALS	Phase 1	Phase 2
No. of Cylinders	3	3
Total Displacement, ltr	1.5	1.5
Engine Power, kW	75 @ 4000 RPM	115 @ 4200 RPM
Power Density, kW / ltr	50	75
BMEP, bar (Rated / max.)	15 / 19.5	21 / 25
Max. Torque (Nm)	235 @2000 rpm	310 @2000 rpm
Torque Back-up	~ 30%	~ 20%
Injection Press.	>1600 bar	>1800 bar
Minimum BSFC, g/kWh	< 195	< 190
Rated BSFC, g/kWh	< 235	< 235
Combustion pressure	170 bar max.	200 bar max.
Sound Power	<100 dBA	<100dBA
Emission Compliance	Euro 4 & Euro 5	Euro 5

MAJOR DESIGN FEATURES

	4 Valves/cylinder with central piezoelectric valve operated injector
	CRDI (> 1600 bar- Stage-1 & >1800 bar-Stage-2) with multiphase injection
	Optimized cooling jackets with internal EGR passage
	OHC valve train for controlled dynamics & NVH
	CGI cylinder head and Cylinder block
	Fully balanced primary & secondary couples with sputtered bearings
	Low friction d esign with fractured & tapered Con Rod
	Variable flow turbocharger, 2 stage Turbo charging
	Flexible- flow water & oil pumps
	Energy Management Systems such as map controlled thermostat, Electric DC Motor EGR with cooling strategy, etc.
	Multi-layer head gasket for better seal & bore deformation control
	After treatment devices for PM like metallic / SiC CDPF & NOx like HC-SCR
	Optimized engine mounts & damping system
	NVH – 4 cylinder engine comfort
	Design can be extended for 2, 4 & 6 cylinder configuration
	Dry Engine Weight < 125 kg