Honda patent new variable valve timing

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Honda patent new variable valve timing
Honda

Honda patent new variable valve timing

Honda patent new variable valve timing

Honda patent new variable valve timing

Honda patent new variable valve timing

12th pictures

Honda patent new variable valve timing
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Honda has patented a new variable valve control.

Honda patent new variable valve timing
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The new variable valve control in the engine of the upcoming Fireblade could celebrate its first use.

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The hydraulic control elements are located on the left side of the cylinder head.

Honda patent new variable valve timing
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The system relies on four-valve technology and rocker arms for valve actuation.

Honda patent new variable valve timing
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For each valve there are two cam profiles on the camshaft – one sharp and one tame.

Honda patent new variable valve timing
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To switch between the cam profiles, the camshafts are shifted axially.

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For this purpose, alternately hydraulically controlled pins in the rocker arm shaft engage in grooves on the camshaft.

Honda patent new variable valve timing
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Electromagnetic valves control the switching pulse.

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Details of the control hydraulics.

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Details of the control hydraulics.

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The system seems to be extremely space-saving.

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There is variable control on the inlet and outlet side.

motorcycles

Honda patent new variable valve timing

Honda patent on new variable valve timing
The Japanese counter the BMW ShiftCam

Motorcycle manufacturer Honda has patented a new variable valve control. Obviously, the Japanese want to compete against the BMW ShiftCam system. The first use could be in the new Fireblade.


Uli Baumann,
Uli Baumann

09/01/2019

A new variable valve control was patented for the Japanese motorcycle manufacturer in the USA under the patent number US 2019/0003352 A1. The patent was published on January 3, 2019. In the struggle for more and more performance with increasingly severe emission values, variable valve control seems to be a good way to go. With the new S 1000 RR with ShiftCam technology, BMW has now shown what is possible with this in a super sports car. With its variable valve control, which is also used in the new BMW Boxer, the new 1,000cc four-cylinder produces 207 hp and 113 Nm in compliance with all currently applicable limit values. The speed limit is 14,600 rpm.

Rocker arms instead of bucket tappets

The current Honda Fireblade has 192 hp and 114 Nm torque – respectable values ​​and enough power for every road driver. But the competition offers more on paper and on the slopes. Here Honda now seems to be following the specifications of the competitors.


Honda patent new variable valve timing


Honda

The next Fireblade could produce up to 220 hp.

The now patented valve control, which is also associated with a Fireblade on the patent drawings, shows a system similar to BMW ShiftCam technology. The four-valve engine relies on fixed-speed rocker arms for valve actuation – so far, bucket tappets have been installed in the Fireblade. In addition, there are two cam profiles for each valve on the inlet and outlet side – one sharp and one tame. On the one hand, this enables low emissions and high torque to be achieved at low speeds; at higher speeds, the valves can be opened wider and longer, which brings more power.

To switch between the cam profiles, the camshafts are shifted in the axial direction with a system controlled by oil pressure and electromagnetic valves. The hollow-drilled rocker arm axles operate two pins that alternately engage in grooves in the camshaft. The control modules for this are located on the left in the cylinder head. What works with the new valve control remains to be seen. In some media there is speculation about a new Fireblade with up to 220 hp.

Honda patent new variable valve timing

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Honda patent new variable valve timing

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