This document from CNGas.RU provides information on converting vehicles to run on compressed natural gas (CNG). It discusses how CNG technology can decrease capital expenses by up to 50% and that converted vehicles can be converted back to diesel and resold. It also outlines the legal requirements for converted and new CNG vehicles in Russia. The document then discusses different engine technologies for CNG vehicles, the process for converting a diesel engine to CNG, and emission standards for CNG vehicles. It also lists equipment used for engine testing and calibration.

1. CNGas.RU

2. Decreases up to 50% of the client’s capital expenses when
CNG technology implementation.
Converted vehicle can be turned back to diesel and sold
out.
No problem with the service disregarding specialized
CNG engines.
New CNG vehicles offering is quite limited in Russia.
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3. Legal platform
for used
vehicles: MIA
order No 1240
Legal platform
for new
vehicles:
Vehicle Design
Safety
Certificate
Certification of
goods and
services
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4. Turbocharged engine
using lean air-fuel mix
Stoichiometric engine,
α=1
• Turbocharging air pressure
control allows to get
acceptable torque at low rpm ;
• Acceptable heat load
• Euro-4 without carbamide, real
perspective to get Euro-5
• High power
• Nox problem
• Engine high heat load
• Low fuel saving
engine using lean air-fuel
mixα=1,4-1,6
• Low Nox evission
• Good fuel saving
• Power losses up to 20%
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5. Fuel system
disassembling
Compression
decreasing
CNG injection
system
installing
Spark ignition
system
installing
Engine
calibration
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6. ECU - 130
MIPS
Al frame
Multipoint
injection
Injectors
and
reducer–
HANA
(S. Korea)
High
pressure
filter
fittings Italy
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8. Euro-5 – close
perspective
Euro-6 - high
hydrocarbon
emission, additional
catalyzer necessary
1 liter diesel fuel = 1,2 nm3 CNG averagely
Euro 4 –
without
problems, withou
t carbamide, with
standard catalyzer
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9. Engine types we familiar with
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10. Dyno is used for checking and calibration of
internal combustion engines up to 700 h.p.
Dyno measures engine parameters under
various working regimes with hydraulic load.
AVL (Austria) equipment for engines
emission parameters control
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12. 1 L diesel = 1 nm3 CNG
Fuel saving
• Compression increasing
• Pre-chamber
combustion
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