Dual-mass flywheel concept for internal combustion engines
AssigneePer Stensgaard Innovasjon AS
InventorPer Stensgaard
Life of this patent
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Abstract
Dual-mass flywheel concept for internal combustion engines, where the secondary flywheel can be disconnected and reconnected as required, by means of a clutch. The concept is characterized in that it comprises a primary flywheel fixedly mounted on the engine crankshaft, a secondary flywheel which is stored so that it can rotate freely, a clutch connecting the secondary flywheel to the drive shaft (input shaft on the gearbox), an elastic element (springs) which connects the primary flywheel to the drive shaft.
Claims11
A system for automated gear shifting of a manual transmission comprising, an internal combustion engine having an idle speed, a primary flywheel mounted on a crankshaft, a drive shaft elastically coupled to the primary flywheel, a secondary flywheel, and a clutch for connecting the secondary flywheel to the drive shaft, and
- wherein a first electric motor/generator is connected to the primary flywheel and a second electric motor/generator is connected to the secondary flywheel, and
- wherein in response to a speed of the internal combustion engine being in the range of 1.5 to 4 times greater than the idle speed, the secondary flywheel being disengaged from the drive shaft.
A method for automated gear shifting of a manual transmission having an internal combustion engine having an idle engine revolution speed, a primary flywheel mounted on a crankshaft, an elastic member for connecting the primary flywheel to a drive shaft, a second flywheel, a clutch for connecting the secondary flywheel to the drive shaft, a first electric motor connected to the primary flywheel, and a second electric motor connected to the secondary flywheel, the method comprising:
- operating the internal combustion engine with the secondary flywheel engaged to the driveshaft in response to an engine revolution speed being below a specified engine revolution speed, the specified engine revolution speed being in the range of 1.5 to 4.0 times the idle engine revolution speed;
- and
- in response to the engine revolution speed exceeding the specified engine revolution speed, disengaging the secondary flywheel from the driveshaft.
Dependencies are inferred from the claim text.