Honda compressor patent: series twin with supercharging

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Honda compressor patent: series twin with supercharging
Honda

Honda compressor patent: series twin with supercharging

Honda compressor patent: series twin with supercharging

Honda compressor patent: series twin with supercharging

Honda compressor patent: series twin with supercharging

5 pictures

Honda compressor patent: series twin with supercharging
Honda

1/5
Honda has combined the Africa Twin’s in-line twin with a supercharger in a patent specification.

Honda compressor patent: series twin with supercharging
Honda

2/5
The twin screw compressor sits above the gearbox and is driven directly by it.

Honda compressor patent: series twin with supercharging
Honda

3/5
It is sucked in in the steering head area, a bypass valve removes excess boost pressure.

Honda compressor patent: series twin with supercharging
Honda

4/5
Honda shows the compressor in connection with a combination of intake manifold and direct injection.

Honda compressor patent: series twin with supercharging
Honda

5/5
Above all, supercharging should deliver more torque over a wide range.

counselor

technology & future

Honda compressor patent: series twin with supercharging

Honda compressor patent
Series twin with charging

The Japanese motorcycle manufacturer Honda is obviously considering engines with supercharging. Now a patent has surfaced showing a series twin with compressor technology.


Uli Baumann

10/13/2020

Turbocharged engines are already widespread in automotive engineering and it is impossible to imagine the current engine landscape without them. In the motorcycle sector, turbo engines had a brief hype in the 1980s, but then disappeared again into oblivion. In studies or small-series models, charging concepts on motorcycles have been seen again and again, but only the compressor on the Kawasaki H2 models has made it into large-scale production.

Twin screw compressor above the gearbox

But even competitor Honda does not seem to have completely sworn off charging. The patent that has now emerged outlines a 1,100 series twin cylinder from the Africa Twin, which is linked to a twin screw compressor. It generates pressure according to the displacement principle with two mutually opposing screw shafts, while the volume between them and the housing decreases. The compressor unit sits behind the cylinders on the gearbox and is mechanically driven from there. The intake air flows through a pipe system from the steering head area to the compressor. A bypass valve is integrated in the pressure pipe to the intake area in order to release excess charge pressure if necessary. The supercharging is linked with a combination of intake manifold and direct injection.


Honda compressor patent: series twin with supercharging


Honda

Constant pressure ratios for a lot of torque

Since the screw compressor runs directly dependent on the engine speed and conveys the same amount of air with every rotation, it is more suitable for accumulating an even amount of torque than generating absolute peak performance. Thanks to the direct drive, there is also no delay in boost pressure build-up – the compressor does not suffer from turbo lag. However, the direct drive eats up engine power.

Honda seems to want to give the in-line twin above all more bang from below and to accept compromises in terms of absolute top performance. A thoroughly tried and tested means to face the stronger competition like BMW R 1250 GS or Ducati Multistrada V4. As with all patents, the same applies here: Protection does not mean implementation. However, the current patent specification is already so detailed that a series implementation is likely.

Conclusion

Actually, it is high time that charging technology, in whatever form, also became established in the motorcycle sector. It would be nice if Honda would follow Kawasaki here.

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