Injection of water on a BMW M4 Safety Car and serial soon?

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BMW developing water injection! This is very good news for all supporters of the technology water injection in engines defended on econologie.com since 2003 (!!), such as on the subject about theinjection of steam in an engine!

BMW has indeed developed an integrated water intake air injection system of an engine turbocharged gasoline. This system reduces the fuel consumption of the engine 8% while increasing performance and reducing emissions. Ultimately, it is conceivable that such a system can be integrated with a range extender electric vehicle, similar to the GM Volt or Vtrux Via Motors.

This innovation, hoping it will spread over the entire BMW range, should nail the beaks of critics of injecting water into combustion engines (and there is not a bit!) ...

Then yes water injection in engines work and yes it is good and yes we know why... And no it was not operated for reasons ... mmmm ... dark?

Yet it was already known that injection of water, under certain conditions, is beneficial for more than a century !! See the work of the engineer Clerget (Among others)! Thank you # BMW and too bad for other manufacturers ... but they should do so quickly!

Learn more and technical debate on water injection by BMW

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1 comment on "Injection of water on a BMW M4 Safety Car and serial soon?"

  1. Contrary to the English version of Mr. Clerget's patent application, I do not think that the maximum temperature in the cylinder of a gasoline engine is sufficient to dissociate the oxygen from the hydrogen.
    Moreover, this operation would be of no energy interest since it would be necessary to provide as much energy for this dissociation as it would be recovered by the combustion.
    On the other hand, at an equal temperature, especially if it is relatively low but above 300 ° C, the dilation of the water vapor is much greater than that of the air. This results in greater pressure on the piston all other things being equal and therefore a better yield.
    Diesel engines emit micro-particles of soot because they are regulated so that the combustion is incomplete because then the temperature is too low to form very toxic nitrogen compounds. But this carbon released into the particle filter is wasted, wasted fuel.
    The efficiency would be better if the combustion was complete but a water injection by cooling the cylinder temperature prevents the formation of nitrogen oxides while increasing the pressure on the piston free of charge.
    This system could be used on aircraft reactors. But the weight of the water to be carried away would make the operation less interesting.
    Since the evaporation of the water is particularly calorie-consuming, it would be preferable for the water injected to be as warm as possible: given the pressure prevailing in the cylinder, it could be more than 100 ° C, preheated by the engine itself (special high-pressure radiator).
    It is of course necessary to use completely demineralised water.
    When a diesel engine is cold-started, as the walls of the cylinder are used to cool the gases below the nitrogen oxide formation temperature, it is not necessary to inject water.

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