Harley-Davidson has patented a new push-rod distribution system, although it is not as cutting-edge as it sounds


Harley-Davidson is experiencing a profound period of change both historically and technically. The Milwaukee firm born in 1903 had never worried about breaking molds precisely, maintaining a high degree of fidelity with its mechanical postulates.

For some years this has changed and the American firm is looking for the distinction beyond with the inclusion of new models of electric motorcycles such as LiveWire, the emergence of electric bicycles to expand its market or the arrival of new models completely unpublished in its Catalogue. Their combustion engines will also become more advanced..

New ideas in the old way

Harley Davidson Sportster Iron 2018 030

If only a few days ago we saw in the filtering of a patent how Harley-Davidson is trying to catch up with the competition by adding gadgets for the future such as adaptive cruise control, now another patent teaches us more about where the course of The American brand.

In 2018 Harley-Davidson presented a new batch of engines equipped with DOHC distribution, engines with double overhead camshafts that raised a stir among the bitter harlista fans and who will be responsible for equipping the Pan America and Streetfighter. Now precisely these thrusters will be modified if the patent that has been filtered is true.

Harley Davidson Patent

Milwaukee Eight thrusters can evolve with the addition of a new Push-rod distribution scheme whose actuators handle all four valves in pairs, two to two. This new system would allow American propellers to spin lighter at high revolutions, achieving extra power and, at the same time, some loss of character.

For this new distribution, actuators controlled from opposite sides would be used: one end would control the exhaust valves and the other the intake valves. This control in pairs is done by placing a 'bridge' between the two valves which is the one that in turn is moved by the actuator.

Harley Davidson Patent

The system seems simple, but the complication is that both bridges (two for each cylinder) work steadily without losing alignment. To solve this point Harley-Davidson would have fixed with a guide That would keep them in place.

The patent itself states that current engines offer their maximum power at about 4,000 revolutions per minute, but by including this new type of distribution the power would reach about 6,800 or 7,000 revolutions. The red line of the Milwaukee Eight is located at 5,500 revolutions. Less moving parts; greater ability to turn up.

Harley davidson

In addition to the consequent extra power achieved thanks to the higher speed of rotation, these new engines could also be more efficient by not being limited to low speeds, being able to find the necessary power to satisfy their customers while overcoming the Euro5 regulations It will take effect soon.

Now we just need to see what models this engine would be implemented. The family that has the most ballots to receive this engine is the Sportster, a line that needs renewal for some time while the Touring and Softails have been remodeled less.

In any case, Harley-Davidson is changing with new ideas, although those new ideas seem taken from a manual of old ideas.

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