Despite manufacturing and launching of the Livewire electric bike and entering an additional performance aspect with the 145-hp, water-cooled revolutionary Max engine, The Harley-Davidson’s future is still firmly entrenched in its traditional air-cooled, Cam Unblock V Twins – and the firm is developing a new engine that can fit these plain boxes. So, Harley-Davidson is Developing V-Twin Engine with Variable Valve Timing.
New patent applications from the firm show that it is developing a brand new air-cooled, Pusrod V2 twin that combines old-school display with state-of-the-art technology, including variable valve timing.
Design elements are familiar Harley area. It is a twin-cam engine twin-cam with a camshaft for each cylinder. They are driven by intermediate camshaft gears which reduce their speed to half of the crankshaft. It is here that the time of the variable valve an original.
Pushrod engine design makes VVT easier to implement. The same VVT actuator (or “variable”) is built into the intermediate gear, allowing the output side that is confused with the camp shot to move a few degrees concerning the input side that communicates with the crankshaft gear. It happens. In contrast, the variable inlet and exhaust valve will require four variants in a DOHCV twin over time, one for each camshaft, and they will Pushrod in the cylinder head where they will reduce the unwanted bulk and weight.
The position of the VVT system on intermediate gear is not a new idea. The Indian has also filed a patent for the Air Cool V Twin in similar order and is not seeking IP rights on the VVT element of the Harley engine. Instead, it hopes to patent a compact new balancer centered on the crankshaft and driven by camp shot intermediate gear through the chain and sprocket. The ratio of the spectrum doubles the speed of the equilibrium – so it rotates at the same camp shot as the crankshaft. Allows vibration to be offset.
Although the new engine clings to Harley’s traditional 45-degree, air-cooled V-Twin layout, its preloads are a break from the usual. We’re used to seeing the Harley V twins’ right-hand pushrod tubes, but the new design has pushrod on both sides of the engine. The front cylinder has its inlet valve on the left and the exhaust on the right, while the rear cylinder has its inlet valve on the right and the exhaust on the left. The head has four-valve designs, each pushrod operating a rocker that on two valves.
Although many have suggested that future emissions laws, especially in Europe, will make air-cooled, push-valve engines a thing of the history, the reality is far-reaching. Euro emission rules are stricter on high-end drivers. Older, slower twins who don’t need high revs can get clean emissions. For example, the BMW R18 launched Will stay with us for a long time.
Since Harley’s large-capacity Milwaukee Eight is still a new design and has with future mission rules in mind, there is an excellent chance the new patent will replace the age-old separatist V-Twin, which Hasn’t changed since the middle. concerning1980s. As a small, high-renewal engine, it’s possible to enjoy the VVT as much as possible with the more giant twins, resulting in cleaner emissions and lower end talk.
