Vehicle, having an internal combustion engine which comprises a flexible drive

Patent metadata

Field	Value
Publication number	US-9841095-B2
Application number	US-201514934681-A
Country	US
Kind code	B2
Filing date	Nov 6, 2015
Priority date	May 7, 2013
Publication date	Dec 12, 2017
Grant date	Dec 12, 2017

Abstract

A vehicle having an internal combustion engine mounted in the vehicle such that a crankshaft of the internal combustion engine runs in a longitudinal direction of the vehicle is provided with a flexible drive is provided that comprises a wheel, in particular a pulley, which is arranged such as to rotate about a longitudinal axis of the vehicle and which is arranged in front of the internal combustion engine when viewed in the direction of travel of the vehicle. The wheel has at least one weakened section which allows or facilitates a compression of the wheel in the longitudinal direction of the vehicle upon a head-on collision. In addition, the wheel may be arranged to cooperate with a recess in the front of the engine to permit further displacement of the wheel toward the engine during a collision.

First claim

What is claimed is:

1. A vehicle, comprising:
an internal combustion engine having a crankshaft extending in a longitudinal direction of the vehicle,
a flexible drive having a wheel arranged to rotate about a longitudinal axis of the vehicle at a front end of the internal combustion engine,
wherein
the wheel has at least one weakened section arranged to facilitate a compression of the wheel in the longitudinal direction of the vehicle in a frontal collision of the vehicle, and
the at least one weakened section is a plurality of weakened sections spaced apart in a circumferential direction of the wheel.

2. The vehicle as claimed in claim 1 , wherein the wheel is a laser-sintered component.

3. The vehicle as claimed in claim 1 , wherein the plurality of weakened sections are formed by slots.

4. The vehicle as claimed in claim 3 , wherein the slots have a length in the longitudinal direction of the vehicle which is greater than a width of the slots in the circumferential direction of the wheel.

5. The vehicle as claimed in claim 1 , wherein the wheel is secured on a flywheel of the internal combustion engine.

6. The vehicle as claimed in claim 5 , wherein the flywheel has a circular depression configured to receive at least one of a circumferential and a lateral surface segment of the wheel in the frontal collision of the vehicle.

7. The vehicle as claimed in claim 1 , further comprising:
a splitting element configured to split at least one of a circumferential and a lateral surface segment of the wheel in the longitudinal direction of the vehicle at at least one point on the at least one circumferential and lateral surface segment in a frontal collision.

8. The vehicle as claimed in claim 7 , wherein the splitting element includes a shank portion extending concentrically with respect to an axis of rotation of the wheel and at least one cutting-edge element configured to penetrate into the at least one circumferential and lateral surface segment of the wheel in a frontal collision provided on an underside of a head portion of the splitting element facing the wheel.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Hoiss Franz
• Zimmermann Markus

Classifications

• F02B67/06

  driven by means of chains, belts, or like endless members · CPC title

• B22F5/08

  of toothed articles, e.g. gear wheels; of cam discs · CPC title

• B60R21/00

  Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks (safety belts or body harnesses in vehicles B60R22/00; seats constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats, B60N2/42; energy-absorbing arrangements for hand wheels for steering vehicles B62D1/11; energy-absorbing arrangements for vehicle steering columns B62D1/19) · CPC title

• F16H55/36 Primary

  Pulleys (with features essential for adjustment F16H55/52) · CPC title

• B22F3/1055

  Operations & Transport · mapped topic