Methods and systems are provided for engaging and disengaging an electromagnetic clutch of a two-speed accessory drive of an engine of a vehicle. In one example, a method comprises, responsive to an electrical demand being higher than a threshold electrical demand, operating an electric machine of the vehicle in a motor mode to reduce a speed of a grounding gear of a planetary gear set of a two-speed accessory drive (TSAD) of the vehicle; and engaging an electromagnetic clutch responsive to the speed of the grounding gear reaching a clutch engagement threshold speed.

In a recoil starter that starts an engine, the recoil starter rotating a drive shaft of the engine using rotation force of a reel through a recoil rope wound around the reel, by the recoil rope being pulled, a ratchet claw is provided on the reel, the ratchet claw pivoting in a radial direction of the reel with rotation of the reel by the recoil rope and then engaging with a pulley provided on the drive shaft, a guide member is provided around a reel shaft, the guide member covering the ratchet claw, the reel shaft being a rotation shaft of the reel, and a rib is provided on the guide member, the rib abutting on the ratchet claw.

An engine including an engine block having a cylinder defining a front of the engine, a blower housing coupled to the engine block and defining a hot half positioned adjacent the front of the engine and a cool half opposite the hot half, and an electric starter system positioned within the blower housing. The electric starting system includes a starter mount assembly coupled to the blower housing, an electric starter motor retained by the starter mount assembly and positioned in the cool half, and a battery mounted to the blower housing and positioned in the cool half. The battery is electrically coupled to the electric starter motor.

An internal combustion engine includes an engine block, a crankshaft configured to rotate about a crankshaft axis, a flywheel coupled to the crankshaft and positioned above the engine block, an outer housing positioned above the engine block and the flywheel, and an electric starting system. The electric starting system includes an electric motor and an energy storage device positioned above the flywheel and below the outer housing. The energy storage device is electrically coupled to the electric motor to power the electric motor. When the electric starting system is configured to rotate the crankshaft to start the engine when the electric starting system is activated.

An internal combustion engine includes an engine block, a crankshaft configured to rotate about a crankshaft axis, a flywheel coupled to the crankshaft and positioned above the engine block, an outer housing positioned above the engine block and the flywheel, and an electric starting system. The electric starting system includes an electric motor and an energy storage device positioned above the flywheel and below the outer housing. The energy storage device is electrically coupled to the electric motor to power the electric motor. When the electric starting system is configured to rotate the crankshaft to start the engine when the electric starting system is activated.

An internal combustion engine of a motor vehicle includes an output shaft and a spring element which can rotate with the output shaft which is to be tensioned as a result of a deactivation of the internal combustion engine by a rotation of the output shaft, where a spring force can be provided by the spring element and where by the spring force the output shaft can be set into rotation in the event of a start following the deactivation. Via a locking device the output shaft is to be secured against a rotation after tensioning the spring element and while the spring element is tensioned. A blocking device can be shifted between a blocking state securing a first part of the spring element, which has a second part non-rotationally connected to the output shaft, against a rotation and a release state releasing the first part for a rotation.

A system for a vehicle includes an electric machine configured to transfer power between an engine and traction battery, an auxiliary battery electrically connected with and isolated from the traction battery, and a controller programmed to, after receiving an engine start request, initiate an engine start using the batteries in response to available traction battery power being below a threshold, and initiate the engine start using the traction battery but not the auxiliary battery otherwise.

The invention discloses a lower pair arc stop-block overrunning clutch comprising an outer rotating element, an inner rotating element, a friction block assembly, a wedge assembly, a first propeller assembly, a first elastic element and a synchronized push-block assembly, wherein a plurality of friction blocks of the friction block assembly are connected end to end and arranged between a first rotating ring and a second rotating ring; an drive element drives the first propeller assembly to press the synchronized push-block assembly to achieve synchronization of the friction block assembly; the first propeller assembly strikes the friction block assembly and is relatively stationary to push the friction block assembly for generating reverse rotation relative to a driven element; the wedge assembly is wedged to generate a radial pressure on the friction block assembly so that the friction block assembly can achieve lower pair arc stop, thereby achieving the transfer of torque.

In a permanently engaged starter system (20), a one-way clutch (40) is located between a starter motor (21) and a starter gear (54) for initiating the start of an internal combustion engine. The clutch (40) can include a starter gear (54), an outer race (56), an inner race (60), a roller cage (42) supporting a plurality of roller disks (46), and at least one spring (52). The roller cage (42) can include an enlarged inertia ring supported adjacent to a radially outwardly located peripheral edge (50) for retarding rotational movement of the roller cage (42) relative to the inner race (60) in response to acceleration of the starter motor (21). The spring (52) biases the roller cage (42) relative to the inner race (60) toward a disengaged clutch position, such that the plurality of roller disks (46) engage the inner race (60) and are spaced from the outer race surface (56).

An electromagnetic switch device for a starter includes a pinion-pushing solenoid for pushing out a pinion toward a ring gear of an engine by a plunger thereof, and a motor-energizing solenoid for energizing the motor. The electromagnetic switch device is configured to detect a magnetic flux change in a magnetic circuit of the motor-energizing solenoid due to displacement or deformation of a core of the motor-energizing solenoid caused when the plunger of the pinion-pushing solenoid abuts against a stopper, to determine a timing to start current supply to the motor-energizing solenoid.