Is this patent used? Fat? Take Bob's engine schematic diagram as an example, but the details of the engine are obviously different from the existing Harley-Davidson engine. The new engine design still uses overhead valves, but the push rod runs on the opposite side of each cylinder, which matches the design in another patent issued last August. Both of these patents were originally submitted to the US Patent and Trademark Office in the beginning of October 20th19th, and the Harley-Davidson engineer John Voghs (Johann? Voges) is the only recognized inventor, probably the same engine.
The figure shows the radiator, although the contour of the radiator is uneven and curved at different positions around the cylinder, and there is no oil filter in the front of the engine. It's hard to understand the proportions in these patent illustrations, and you may be looking for a way to replace the old Sportster engine.
The engine balancer unit (# 74) transmits the rotation of the crankshaft to rotate the two camshafts. Each camshaft lifts its own push rod, one for each cylinder. A second balancer unit on the other side of the crankshaft can start a second pair of push rods.
The key of this patent is the engine balance module (# 74 in the figure, shown in the exploded view below). The crankshaft is connected with the gear # 154, which drives the cam gear # 158 to rotate. The cam gear is connected to the smaller second gear # 170, which rotates the chain (# 178). The chain in turn rotates the balancer sprocket, which makes the counterweight (# 86) rotate around the crankshaft in the opposite direction to the rotation of the crank to counteract the reciprocating motion of the piston.
The VVT unit (# 98) controls the phase of the gear # 162 that drives the crankshaft (# 90). A variable valve timing unit (# 98) connected to the cam device adjusts the timing of the cam, thereby affecting the timing of the intake valve and the exhaust valve relative to the crankshaft. Generally speaking, adjusting the intake timing can optimize the power and torque transmission at higher or lower speeds, but Harley may pursue the goal of reducing emissions.
As for Harley-Davidson's existing engines, especially the Sportster series, they will not meet the Euro 5 standard, which means that they will not be sold in Europe before the end of the year. Due to the delay caused by the epidemic, some manufacturers have asked to extend the deadline of Euro 5, which may give Harley a last chance to breathe if the new engine is not ready.
This article comes from car home, the author of the car manufacturer, and does not represent car home's position.