US5226500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automotive power unit mounting system
Assignee: Nissan Motor Co Ltd
•
Filing: 1992-11-09
•
Granted: 1993-07-13
•
Expires: 2012-11-09
Abstract
Abstract A vibration sensor is disposed at an evaluation point on the vehicle floor proximate the driver's seat. This sensor, in combination with one disposed on a electrically controllable engine mount, is used to determine the magnitude and orientation of a vector of vibration which reaches the evaluation point and which combines with other vibrational vectors in a manner which results in the generation of vibration at the evaluation point. A mount control signal is controlled in a manner which modifies the vibration vector and attenuates the vibration at the evaluation point.
Inventors
- 👤 Kazuhiro Doi
- 👤 Hirofumi Aoki
- 👤 Shigeki Sato
- 👤 Yoshiharu Nakaji
- 👤 Tsutomu Hamabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:43
CPC Classifications
F; F16; F16F; F16F13/00; F16F13/04; F16F13/26; F16F13/30; B; B60; B60K; B60K5/00; B60K5/12; B60K5/1283
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
156 words
A power unit mounting system for a vehicle having a chassis comprising: a power unit; a plurality of mounts supporting the power unit at a plurality of suspension points on a chassis and including a first electrically controllable mount disposed at a first of the plurality of suspension points and responsive to a first electric control signal applied thereto; a first vibration sensor for sensing vibration at a first predetermined vibration evaluation point on the chassis remote from the suspension points where vibration occurs due to the operation of the power unit; and control signal generating means for vector analysis of magnitude and phase of vibrations applied to the first vibration sensor from the power unit and for generating the first control signal for the first mount in response to the vector analysis to attenuate a resultant vector comprising a vector sum of vibrations applied to the first vibration sensor from the plurality of suspension points.
Claim 2
Dependent Claim
156 words
A power unit mounting system for a vehicle having a chassis comprising: a power unit; a plurality of mounts supporting the power unit at a plurality of suspension points on a chassis and including a first electrically controllable mount disposed at a first of the plurality of suspension points and responsive to a first electric control signal applied thereto; a first vibration sensor for sensing vibration at a first predetermined vibration evaluation point on the chassis remote from the suspension points where vibration occurs due to the operation of the power unit; and control signal generating means for vector analysis of magnitude and phase of vibrations applied to the first vibration sensor from the power unit and for generating the first control signal for the first mount in response to the vector analysis to attenuate a resultant vector comprising a vector sum of vibrations applied to the first vibration sensor from the plurality of suspension points.
Claim 3
Dependent Claim
59 words
A vehicle as claimed in claim 1 further comprising: a second vibration sensor for sensing the vibration at a second predetermined vibration evaluation point on said chassis said second evaluation point being distal from the plurality of suspension points and spaced from the first evaluation point, said second vibration sensor being operatively connected with said control signal generating means.
Claim 4
Dependent Claim
44 words
A vehicle as claimed in claim 2 wherein said control signal generating means includes means for generating an evaluation function based on the input from said first vibration sensor and for weighting the evaluation function based on the output of said second vibration sensor.
Claim 5
Dependent Claim
48 words
A vehicle as claimed in claim 1 further comprising a second electrically controllable mount which is disposed at a second of the plurality of suspension points and which supports said power unit on said chassis, said second mount being responsive to a second electric control signal applied thereto.
Claim 6
Dependent Claim
52 words
A vehicle as claimed in claim 4 wherein said control signal generating means includes means for discriminating which of said first and second mounts is associated with a highest contribution to the vibration sensed at said first evaluation point and for selectively controlling the selected one of said first and second mounts.
Claim 7
Dependent Claim
51 words
A power unit mounting system as claimed in claim 1 comprising a second vibration sensor mounted on the electrically controllable mount for sensing vibration of the electrically controllable mount, wherein the control signal generating means performs the vector analysis in response to vibrations sensed by the first and second vibration sensors.
Claim 8
Dependent Claim
19 words
A power unit mounting system as claimed in claim 6 wherein the first and second vibration sensors comprise accelerometers.
Claim 9
Dependent Claim
111 words
A power unit mounting system for a vehicle comprising: a chassis; a seat disposed on the chassis; a power unit; a plurality of power unit mounts supporting the power unit at a plurality of suspension points on the chassis, at least one of the mounts comprising an electrically controllable mount; vibration discrimination means for determining vibration vectors indicating magnitude and phase of vibrations that originate from the power unit mounts and are applied to an evaluation point support by the chassis near the seat; and control means responsive to the vibration discrimination means for controlling the electrically controllable mount based on the vibration vectors to attenuate vibration at the evaluation point.
Claim 10
Dependent Claim
111 words
A power unit mounting system for a vehicle comprising: a chassis; a seat disposed on the chassis; a power unit; a plurality of power unit mounts supporting the power unit at a plurality of suspension points on the chassis, at least one of the mounts comprising an electrically controllable mount; vibration discrimination means for determining vibration vectors indicating magnitude and phase of vibrations that originate from the power unit mounts and are applied to an evaluation point support by the chassis near the seat; and control means responsive to the vibration discrimination means for controlling the electrically controllable mount based on the vibration vectors to attenuate vibration at the evaluation point.
Claim 11
Dependent Claim
134 words
A power unit mounting system for a vehicle comprising: a chassis; a seat disposed on the chassis; a power unit; a plurality of power unit mounts supporting the power unit at a plurality of suspension points on the chassis, at least one of the mounts comprising an electrically controllable mount; a first vibration sensor disposed at an evaluation point on the chassis in a vicinity of the seat; a second vibration sensor mounted on the electrically controllable mount; vector determining means responsive to the first and second vibration sensors for determining a vibration vector indicating magnitude and phase of vibrations at the evaluation point transmitted from the power unit through the electrically controllable mount; and control means for controlling the electrically controllable mount in response to the vibration vector to reduce the vibration vector.
Claim 12
Dependent Claim
134 words
A power unit mounting system for a vehicle comprising: a chassis; a seat disposed on the chassis; a power unit; a plurality of power unit mounts supporting the power unit at a plurality of suspension points on the chassis, at least one of the mounts comprising an electrically controllable mount; a first vibration sensor disposed at an evaluation point on the chassis in a vicinity of the seat; a second vibration sensor mounted on the electrically controllable mount; vector determining means responsive to the first and second vibration sensors for determining a vibration vector indicating magnitude and phase of vibrations at the evaluation point transmitted from the power unit through the electrically controllable mount; and control means for controlling the electrically controllable mount in response to the vibration vector to reduce the vibration vector.
Claim 13
Dependent Claim
31 words
A power unit mounting system as claimed in claim 9 including a floor panel supported by the chassis wherein the first vibration sensor is an accelerometer mounted on the floor panel.
Claim 14
Dependent Claim
19 words
A power unit mounting system as claimed in claim 10 wherein the second vibration sensor comprises a lateral accelerometer.
References Cited (Backward Citations)
GB1020851A
Cited
GB1282568A
Cited
FR2379732A1
Cited
GB2071810A
Cited
GB2061453A
Cited
GB2122052A
Cited
DE3336965A1
Cited
JPS60104828A
Cited
JPS61207212A
Cited
EP0211173A2
Cited
DE3705579A1
Cited
US5060919A
Cited
EP0290181A2
Cited
JPS642944A
Cited
JPS649021A
Cited
JPS6450035A
Cited
DE3836355A1
Cited
GB2216226A
Cited
US4928935A
Cited
US4909489A
Cited
US4919402A
Cited
US5009402A
Cited
US4941649A
Cited
US4971299A
Cited
US5052662A
Cited
FR2642489A1
Cited
US4991826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-12 | 1997-01-11 | 1997-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-12 | 2001-01-11 | 2001-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-12 | 2005-01-11 | 2005-07-13 | $7700.00 | Window Closed / Lapsed |