Naturally aspirated and turbo engines from MAN Engines
Focus on electricity or heat production: Best possible efficiency through application-optimised gas engines
Advantages of MAN naturally aspirated engines
MAN naturally aspirated engines are the perfect choice when the primary aim is to generate heat. Due to a combustion air ratio of λ=1, naturally aspirated engines generate about three to six percent more thermal energy output than turbocharged engines. Since naturally aspirated engines do without cost-intensive components such as turbochargers and mixture coolers, their purchase price is significantly lower than that of turbocharged engines. The reduction of maintenance-intensive assemblies and lower mechanical and thermal stress also increase maintenance intervals and reduce costs. A particular advantage of MAN naturally aspirated engines is their use with a cost-effective three-way catalytic converter. This allows nitrogen oxides (NOx) and carbon monoxide (CO) to be reduced to values as low as < 100 mg/Nm3.
Naturally aspirated engines from MAN Engines are always the best choice when there is primarily a high demand for heat or when emissions are to be reduced to a low level cheaply and reliably.
MAN Engines offers naturally aspirated engines in the power range from 34 kW to 300 kW for markets with mains frequencies in 50 Hz and 60 Hz for operation with natural gas. In the 300 kW range, MAN Engines is making a clear statement through its sole position in the market!
Advantages of MAN turbo engines
MAN turbo engines are supercharged gas engines with lean combustion. These turbocharged lean-burn engines deliver more electrical power through turbocharging, which also enables higher mechanical efficiencies. But even under adverse conditions and at high altitudes, combined heat and power units (CHPs) and gensets with turbo engines from MAN Engines have proven their performance and reliability many times. If solutions for exhaust gas aftertreatment are necessary, MAN relies on its tried and tested SCR system for turbo engines, which has also proven itself many times in numerous mobile applications.
MAN Engines turbocharged engines focus on the production of electricity and the additional generation of heat. Furthermore, they are used in applications with higher power requirements than naturally aspirated engines.
MAN Engines turbocharged engines are available in the power range 68 kW to 580 kW with 1,500 rpm and 1,800 rpm. These are operated with natural gas or with CO2 neutral special gases, e.g. biogas from agricultural biogas plants or sewage gas from municipal sewage treatment plants.
Comparison of MAN naturally aspirated engine with MAN turbocharged engine
Application example for naturally aspirated engine with focus on heat utilisation
A naturally aspirated engine is used to heat an assembly hall with paint shop on the MAN factory premises in Nuremberg.
The MAN E3262 E302 has an output of 275 kWmech at 1500/min (50 Hz) and generates about 1.25 million kWh of electricity per year.
With 275 kWmech, the MAN Engines naturally aspirated V12 engine has a unique selling point in terms of rated mechanical power.
Due to its small dimensions, the engine is predestined for use in a natural gas compact module.
Application example for turbocharged engine with focus on power generation
Biogas plants are a classic application for turbocharged engines from MAN Engines.
The MAN E3262 LE202 turbocharged engine was specially developed for bio and special gas applications.
In continuous operation, the MAN engine runs for over 8,600 hours a year.
View into the upper container with an SCR catalytic converter for each of the two cylinder banks of the V-engine. Generous space conditions facilitate service work.
