Mounting arrangement for vehicle engines
AssigneeBTR PLC a British Company
InventorsAnthony Best, Kenneth V. Hunt, Raymond Hoole
Life of this patent
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Abstract
A vehicle engine mounting arrangement wherein a pair of interconnected fluid-tight chambers containing gas are employed, one arranged between the engine and the body and the other arranged between the body and the suspension system. The two chambers are each deformable under load and changes of pressure which are communicated between the chambers act on the respective chambers so that dynamic forces exerted on the body via one chamber tend to be counteracted by corresponding oppositely directed forces exerted on the body via the other chamber, hence reducing shake.
Claims18
A mounting arrangement for a vehicle engine of the kind comprising means for mounting the engine of a vehicle to a body of the vehicle, which mounting means comprises a first fluid-tight chamber of variable volume which contains gas and which is arranged between the engine and the body so that weight of the engine tends to reduce a volume of the chamber,
- means for supporting the body on a suspension system of the vehicle, which supporting means includes a second fluid-tight chamber of variable volume which contains gas and is arranged so that a load of the body on the suspension system tends to reduce the volume of the second chamber, the means for mounting the engine being physically separated from the means for supporting the body, conduit means interconnecting the first and second fluid-tight chambers with one another so that relative movement between the engine and body and between the body and the suspension system alters pressure of gas within the respective chambers and the change in gas pressure in one chamber is communicated to the other of the chambers whereby dynamic forces exerted on the body via the second chamber tend to be counteracted by corresponding oppositely directed forces exerted on the body via the first chamber.
A mounting arrangement for a vehicle engine of the kind comprising means for mounting the engine of a vehicle to a body of the vehicle, which mounting means comprises a first gas-tight chamber of variable volume which contains gas and which is arranged between the engine and the body so that weight of the engine tends to reduce a volume of the chamber,
- means for supporting the body on a suspension system for the vehicle, which supporting means includes a second gas-tight chamber of variable volume, which chamber contains gas and is arranged so that a load of the body on the suspension system tends to reduce the volume of the second chamber,
- a gas conduit means between the first and second chambers, connected so that relative movement bewteen the engine and body and between the body and suspension system alters pressure of the gas in the respective chambers, which change in gas pressure in one chamber is communicated to the other of the chamber, the arrangement acting to tend to bring into phase vibrational movements of the body and engine, effective pressurized areas as herein defined of the mounting means and supporting means being approximately equal and a natural frequency of vibration of the body on the supporting means without the second chamber being approximately equal to the natural requency of vibration of the engine on the effective gas spring as herein defined.
Dependencies are inferred from the claim text.