CNG DIESEL GAS
Clean Fuel Solutions

The Energy
of Tomorrow.

CNG conversion systems, diesel kits, gas cylinders and industrial bundle solutions — sourced directly from certified manufacturers.

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CNG
Direct & Sequential Injection
4
Cylinder Types Available
4
Bundle Configurations
300K
Cylinders/Year
CNG Vehicle Kits

Direct Injection
& Sequential Systems.

Complete CNG conversion kits for 4 and 6 cylinder petrol engines. All kits include the full system with all required components.

CNG System
Direct Injection Kit
CNG direct injection conversion system designed for 4 and 6 cylinder petrol engines in passenger cars. Certified to ECE R110, ISO 9001 and BV standards.
Engine Type4 & 6 Cylinder Petrol
Gas TypeCNG
ApplicationPassenger Cars
CertificationECE R110 · ISO 9001 · BV
Flow FluctuationLess than 5%
Kit Components
01
Injector Rail
Model JY08 · ECE R110 · 2/3/4 Cyl.
02
Switch
CNG/Petrol changeover switch
03
Filter
Gas filter unit
04
Regulator / Reducer
Model JY02 · Max 22 MPa · ≥42 m³/h
05
ECU
Model N18 · OBD available · -40°C to +120°C
06
Filling Valve
High-pressure CNG filling valve
07
High Pressure Pipeline
Connecting pipework
08
Gas Cylinder
CNG cylinder — 35 L / 65 L / 120 L
09
Cylinder Valve
High-pressure cylinder valve
CNG System
Sequential Injection Kit
CNG sequential injection conversion system for 4 and 6 cylinder petrol engines. Optimized individual cylinder fuel delivery for stable and efficient engine performance.
Engine Type4 & 6 Cylinder Petrol
Gas TypeCNG
ApplicationPassenger Cars
CertificationECE R110 · ISO 9001 · BV
Injection TypeSequential per cylinder
Kit Components
01
Injector Rail
Model JY08 · Sequential · ECE R110
02
Switch
CNG/Petrol changeover switch
03
Filter
Gas filter unit
04
Regulator / Reducer
Model JY02 · Patent design · GDI compatible
05
ECU — Sequential
N18 · Sequential 4 cyl. output · 48 pin
06
Filling Valve
High-pressure CNG filling valve
07
High Pressure Pipeline
Connecting pipework
08
Gas Cylinder
CNG cylinder — 35 L / 65 L / 120 L
09
Cylinder Valve
High-pressure cylinder valve
Diesel Conversion

Diesel CNG
Conversion Kits.

CNG conversion kits for 4 and 6 cylinder diesel engines. Includes ECU, reducer and injector rail.

4 Cylinder 6 Cylinder Commercial Vehicles CNG
Diesel ECU Kit
Diesel ECU system with ACT Diesel App for calibration and diagnostics. Includes timing control for optimal gas injection on diesel engines.
GDI ECU Kit
Specialized ECU for GDI (Gasoline Direct Injection) engines. 32-bit chip, OBD function, timing advancer, short-circuit and overheat protection.
Injector Rail + Reducer
Model JY08 injector rail and JY02 reducer included. High-precision CNC machined components for reliable heavy-duty operation.
Lower Emissions.
Cleaner Fuel.
Same Distance.
Our CNG conversion systems and certified gas cylinders are designed for reliability across passenger cars and commercial vehicles.
Certifications
ECE R110
ISO 9001 · BV · DOT
Cylinder Types
Type 1–4
Steel to full carbon fiber
Production
300,000
Cylinders / Year
Gas Cylinders

Every Type.
Every Application.

CNG cylinders available in 35 L, 65 L and 120 L — suitable for passenger cars and commercial vehicles. Four construction types from seamless steel to full carbon fiber composite.

Type 1
Seamless Steel Cylinder
34CrMo4 · Convex bottom · 200 bar
▾
35 L65 L120 L Ø 219 mmØ 232 mmØ 279 mm Ø 325 mmØ 356 mmØ 406 mm
Working Pressure
200 bar
Material
34CrMo4 Steel
Bottom Shape
Convex
ECE R110 · ISO 11439 · DOT-3AA
Type 2
Steel + Glass Fiber Wrap
30CrMo · Lightweight hoop-wrapped · 200 bar
▾
Ø 325 mmØ 356 mm Ø 406 mmØ 426 mm 60–260 L
Working Pressure
200 bar
Material
30CrMo + Glass Fiber
Advantage
Lighter than Type 1
ECE R110 · ISO 11439
Type 3
Steel Liner + Carbon Fiber Wrap
30CrMo + Carbon Fiber · Significantly lighter
▾
Ø 366 mm: 35 L, 75 L Ø 424 mm: 50 L, 100 L Ø 430 mm: 120–260 L
Working Pressure
200 bar
Material
Steel + Carbon Fiber
Wall Thickness
3.5–3.6 mm
Q/LD 0001-2024
Type 4
HDPE + Full Carbon Fiber
Maximum weight reduction · Composite liner
▾
Ø 365 mm: 66 L Ø 452 mm: 115 L Ø 907 mm: 1080 L
Working Pressure
200 bar
Material
HDPE + Carbon Fiber
Advantage
Lightest option
ECE R110 · ISO 11439
H₂
Hydrogen Cylinders (Type 4)
35 MPa & 70 MPa · HDPE + Carbon Fiber
▾
35 MPa: 60–450 L 70 MPa: 60–422 L
Pressure Options
35 MPa · 70 MPa
Material
HDPE + Carbon Fiber
Application
Fuel cell vehicles
Type 4 Certified
LPG
LPG Composite Cylinders
HDPE + Glass Fiber · EN 12245 / ISO 11119-3
▾
12.5 L18.2 L 24.5 L26.2 L 27.4 L30.5 L34.5 L
Working Pressure
20 bar
Material
HDPE + Glass Fiber
Features
Visible liquid level
EN 12245 · ISO 11119-3
Industrial & Supply

CNG Cylinder Bundles.

High-capacity gas storage bundle assemblies for industrial and supply station use. All cylinders Ø 406 mm · 200 L per cylinder · 200 bar working pressure.

12
Cylinders
12 × 200 L
2,400 L
200 bar working pressure
16
Cylinders
16 × 200 L
3,200 L
200 bar working pressure
24
Cylinders
24 × 200 L
4,800 L
200 bar working pressure
28
Cylinders
28 × 200 L
5,600 L
200 bar working pressure
Lower Emissions.
Cleaner Fuel.
Same Distance.
Our CNG conversion systems and certified gas cylinders are built for reliability across passenger cars and commercial vehicles.
Certifications
ECE R110
ISO 9001 · BV · DOT
Cylinder Types
Type 1–4
Steel to full carbon fiber
Production
300,000
Cylinders / Year
Contact

Let's Talk
About Your
Project.

Whether it's a vehicle conversion, industrial gas supply or a large-volume order — we are happy to advise you and provide a tailored quote.

J. Seto
Chief Executive Officer
+49 172 8891304
j.seto@sis-cleanenergy.com
S. Seto
Directing Manager
+49 172 6926260
s.seto@sis-cleanenergy.com