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1. 发明专利

JP2000190864A REAR WHEEL STEERING DEVICE 失效
公开(公告)号：JP2000190864A
公开(公告)日：2000-07-11
申请号：JP37054398
申请日：1998-12-25
申请人： HINO MOTORS LTD
发明人： MOMIYAMA FUJIO , ENOMOTO MITSURU
IPC分类号： B62D6/00 , B62D5/07 , B62D7/14 , B62D101/00 , B62D113/00
摘要： PROBLEM TO BE SOLVED: To support most of the body load with two rear axles and to reduce the load applied to front wheels by stopping the steering of rear and front wheels by actuators if the vehicle speed is nearly 0 when a control means controlling the steering of the rear and front wheels by the actuators is provided. SOLUTION: An electronic control device 69 reads the vehicle speed with a vehicle speed sensor and judges whether the vehicle speed is 0 or not. If the vehicle speed is 0, the steering of rear and front wheels is stopped. If the vehicle speed is not 0, i.e., when a vehicle is traveling, the steering angle of front wheels is read by a steering angle sensor 71, and whether the steering angle of the front wheels exists in a dead zone or not is judged. If the steering angle of the front wheels is a deal zone angle, the rear and front wheels are not steered. If the front wheels are steered at an angle exceeding the dead zone, the steering of the rear and front wheels is controlled.

2. 发明专利

JPH11151922A SUSPENSION DEVICE FOR AXLE 失效
公开(公告)号：JPH11151922A
公开(公告)日：1999-06-08
申请号：JP33508297
申请日：1997-11-19
申请人： HINO MOTORS LTD
发明人： MOMIYAMA FUJIO , ENOMOTO MITSURU
IPC分类号： B60G5/04 , B60G11/04
摘要： PROBLEM TO BE SOLVED: To provide a trunnion type suspension device, which reconciles operability, stability and comfortableness, for vehicles with two axles in the rear section. SOLUTION: Projections 23 and 39 are projectedly provided in a rear front axle 11 and rear rear axle 12 respectively, and V-shaped upper rods 26 and 42 are connected to each other through brackets 24 and 40, which are provided in the projections 24 and 39. In this constitution, the roll center of a car body is made eccentric upward.

3. 发明专利

JPH11117784A VEHICULAR POSITION CONTROL DEVICE 失效
公开(公告)号：JPH11117784A
公开(公告)日：1999-04-27
申请号：JP28403897
申请日：1997-10-16
申请人： HINO MOTORS LTD
发明人： KITAZAWA KEIICHI , MOMIYAMA FUJIO , OKUYAMA HIROKAZU , MIYAZAKI KIYOAKI
IPC分类号： B60W10/00 , B60T8/1755 , B60T8/24 , B60W10/04 , B60W10/06 , B60W10/18 , B60W10/184 , F02D29/02 , B60K41/28
摘要： PROBLEM TO BE SOLVED: To control sliding of driving wheels when a road is in a easy-to-slide condition by estimating and calculating a frictional coefficient of a traveling road surface, and controlling engine rotating speed so as to equalize rotating speed of the driving wheels with rotating speed of driven wheels when the value of the frictional coefficient which is estimated and calculated is smaller than a prescribed value. SOLUTION: The frictional coefficient of a traveling road surface is estimated and calculated from a driving operation input data and a vehicular behavior data by a road frictional coefficient estimating device 2, and engine rotating speed is controlled by a control means 3 so as to equalize rotating speed of driving wheels with rotating speed of driven wheels when the value of the frictional coefficient is smaller than a prescribed value. Namely, by the control means 3, a control map is prepared corresponding to an isochronous control mode for rapidly increasing fuel supply rate when rotating speed of an internal combustion engine is reduced, the control mode is converted from a normal control mode into the isochronous control mode when the value of the frictional coefficient is smaller than a prescribed value, and a brake is actuated on the driving wheels when the value of the frictional coefficient is larger than the prescribed value.

4. 发明专利

JPH11115721A ESTIMATION DEVICE OF ROAD SURFACE FRICTION COEFFICIENT 失效
公开(公告)号：JPH11115721A
公开(公告)日：1999-04-27
申请号：JP28398597
申请日：1997-10-16
申请人： HINO MOTORS LTD
发明人： TSUMAGARI ICHIRO , MOMIYAMA FUJIO , KITAZAWA KEIICHI , OKUYAMA HIROKAZU , MIYAZAKI KIYOAKI
IPC分类号： G01N19/02 , B60R16/02 , B60T8/172 , B60T8/1761 , B60T8/58
摘要： PROBLEM TO BE SOLVED: To estimatingly compute road surface friction coefficient in the wide range of steering angle accurately and effectively by computing it utilizing acceleration in the longitudinal direction when the steering angle is smaller than a fixed value, and computing it utilizing acceleration in the lateral direction when the steering angle is larger than the fixed value. SOLUTION: This road surface friction coefficient estimation device 1 is provided with a means for measuring acceleration in the longitudinal direction of a vehicle, acceleration in the lateral direction, vehicle speed, and the yaw rate of the vehicle as electric signals. Further it is provided with a means for estimatingly computing the road surface friction coefficient utilizing output of the measuring means and a means for taking in the steering angle of the vehicle as an electric signal. The means for estimatingly computing the road surface friction coefficient adopts a computing means utilizing acceleration in the longitudinal direction when the steering angle is smaller than a fixed value, and a computing means utilizing acceleration in the lateral direction when it is larger than the fixed value. The road surface friction coefficient can be estimatingly computed in the wide range of the steering angle accurately and effectively, particularly the estimation accuracy in the range of small steering angle generating no acceleration in the lateral direction of the vehicle is improved.

5. 发明专利

JPH11115720A ESTIMATION DEVICE OF ROAD SURFACE FRICTION COEFFICIENT 失效
公开(公告)号：JPH11115720A
公开(公告)日：1999-04-27
申请号：JP28217297
申请日：1997-10-15
申请人： HINO MOTORS LTD
发明人： MIYAZAKI KIYOAKI , KITAZAWA KEIICHI , TSUMAGARI ICHIRO , MOMIYAMA FUJIO , OKUYAMA HIROKAZU
IPC分类号： G01N19/02 , B60R16/02 , B60T8/172 , B60T8/1761 , B60T8/58
摘要： PROBLEM TO BE SOLVED: To estimatingly compute friction coefficient of a road surface during running even if a vehicle is not in the driving condition or the braking condition by computing the road surface friction coefficient of front wheels by a specific expression out of the angle of side slip of a vehicle computed by a specific expression, lateral force of front wheels, and the angle of side slip of the front wheels. SOLUTION: The accleration (g) in the lateral direction of a vehicle, the vehicle speed, and the yaw rate ω are measured, and the angle of side slip βis computed by an expression dβ/dt=(g/V)-ω. The lateral force generated in the front wheel is computed out of inertia moment I around the gravity center axis of the vehicle, the lateral force Ff of the front wheel, the distance from the gravity center to a front axle or a rear axle Lf, Lr, the lateral force Fr of the rear wheel, and the mass (m) of the vehicle by a formula Ff=(I (dω/ dt)+mgLr)/2(Lf+Lr). The net angle of side slip of the front wheel at steering with a steering angle δis computed by an expression βF=β+(Lf/V)ω-δ. The road surface friction coefficient μ is computed by an expression μ=Ff/(Kf.βf) where the constant of cornering power is set as Kf.

6. 发明专利

JPH1159385A VEHICLE ATTITUDE CONTROL DEVICE 失效
公开(公告)号：JPH1159385A
公开(公告)日：1999-03-02
申请号：JP22674597
申请日：1997-08-22
申请人： HINO MOTORS LTD
发明人： OKUYAMA HIROKAZU , MOMIYAMA FUJIO , KITAZAWA KEIICHI , MIYAZAKI KIYOAKI
IPC分类号： B60T8/58 , B60T8/172 , B60T8/1755 , B60T8/1763
摘要： PROBLEM TO BE SOLVED: To control proper attitude according to a road surface even while a vehicle is traveling on a slippery road surface, without adding hardware such as new sensors. SOLUTION: When the value of the friction coefficient (μ) of a road surface on which a vehicle travels is great, the output of each sensor showing the behavior of the vehicle is weighted and selected; when the value of the friction coefficient (μ) is small, a numerical value held in a numerical value model and showing the physical characteristic of the vehicle is weighted and selected, and operations are performed based on the numerical value to correct the inputs of driving operations and the inputs of disturbance to the safety side.

7. 发明专利

JPH1159366A DRIVING FORCE AND BRAKING FORCE CONTROL DEVICE 失效
公开(公告)号：JPH1159366A
公开(公告)日：1999-03-02
申请号：JP22681897
申请日：1997-08-22
申请人： HINO MOTORS LTD
发明人： MIYAZAKI KIYOAKI , KITAZAWA KEIICHI , TSUMAGARI ICHIRO , MOMIYAMA FUJIO , OKUYAMA HIROKAZU
IPC分类号： B60W10/04 , B60T8/172 , B60T8/1755 , B60T8/176 , B60T8/1761 , B60T8/24 , B60T8/58 , B60W10/06 , B60W10/18 , B60W10/184 , F02D29/02 , F02D41/04 , B60K41/20
摘要： PROBLEM TO BE SOLVED: To stabilize the running condition of a vehicle by anticipating the slip limit of a wheel through operations, and controlling according to the slip limit a braking force or driving force applied to the wheel. SOLUTION: A road surface friction coefficient μ generated on a wheel and a lateral force Fy generated on its axle are estimated through operations, and when the vertical load of the wheel is W, a maximum longitudinal force, Fxmax, is computed from the estimated road surface friction coefficient μand the lateral force Fy by using Fxmax=√[(μ/W) -(Fy) ] The driving force or braking force applied to the wheel is controlled according to the maximum longitudinal force Fxmax. Thus, hazardous conditions that may lead to the rolling of the vehicle can be prevented.

8. 发明专利

JPH08318721A TANDEM AXLE TRUNNION TYPE REAR SUSPENSION 失效
公开(公告)号：JPH08318721A
公开(公告)日：1996-12-03
申请号：JP14969895
申请日：1995-05-25
申请人： HINO MOTORS LTD
发明人： MOMIYAMA FUJIO , HARADA KOJI
IPC分类号： B60G5/04 , B60G5/053 , B60G11/04 , B60G11/107 , F16F1/18
摘要： PURPOSE: To improve the confortableness of a rear tandem car ay forming the front end part of the longest leaf out of plural leaves in a wave shape and avoiding the slip of the contact point of the leaf on an axle by matching the motion of the front end of the leaf with the motion of a rear front axle decided by a torque rod and dissolving the friction force between the axle and the leaf. CONSTITUTION: A drive wheel 42 and a loose wheel 43 are bounded on a rugged road surface and the rear front axle 40 is elevated around a moment center C1 and the rear rear axle 41 is elevated around the moment center C2 respectively by the bending of their right/left leaf springs 12, 12. At this time, the contact point P1 of the leaf 17, 17 contacted to the rear front axle 40 moves along the locus L'1 around the locus center O1 and does not interfere to the locus L1 of the contact point P1 around the moment center C1 of the rear front axle 40. Namely, the slip of the contact point P1 of the leaf 17, 17 is avoided on the rear front axle 40 and the friction force generated on the contact part of the rear front axle 40 with the leaf 17, 17 is dissolved.

9. 发明专利

JPH08105731A WHEEL-ALIGNMENT MEASURING APPARATUS 失效
公开(公告)号：JPH08105731A
公开(公告)日：1996-04-23
申请号：JP26436794
申请日：1994-10-05
申请人： HINO MOTORS LTD
发明人： SASAKI TAKASHI , MOMIYAMA FUJIO
IPC分类号： G01B11/275 , G01M17/007
摘要： PURPOSE: To obtain a wheel-alignment measuring apparatus in which an air supply device or the like is not required and by which a wheel alignment can be measured with high accuracy by a simple installation by using a laser displacement meter which is not affected by a change in the temperature of the open air. CONSTITUTION: A belt 6 is stretched between a pulley 3 which is installed at a coupling shaft 2 and a pulley 5 for a motor 4, one pair of rollers 1a, 1b are turned and driven, and one pair of wheels 7a, 7b are turned. Then, distances L7, L8 are measured by center laser displacement meters 8e, 8g, and a transverse displacement movement amount is measured. Distances L1, L3 are measured by front laser displacement meters 8a, 8c, distances L2, L4 are measured by rear laser displacement meters 8b, 8d, the correction value of the transverse displacement movement amount portion of the distances L7, L8 which have been measured by the center laser displacement meters 8e, 8g is operated by an arithmetic device 11, a toe-in is found, and a toe value is confirmed by a display device 12. The distances L7, L8 are measured by the center laser displacement meters 8e, 8g, distances L5, L6 are measured by upper laser displacement meters 8f, 8h, the distances are operated by the arithmetic device 11, a camber is found, and a camber value is confirmed by the display device 12.

10. 发明专利

JPH07172126A REAR SUSPENSION TO BE USED FOR AUTOMOBILE 失效
公开(公告)号：JPH07172126A
公开(公告)日：1995-07-11
申请号：JP34618293
申请日：1993-12-22
申请人： HINO MOTORS LTD
发明人： MOMIYAMA FUJIO
IPC分类号： B60G9/04 , B60G11/04 , B60G11/10
摘要： PURPOSE:To easily improve traveling stability and steering stability when an automobile using a wheel shaft type axle turns or receives disturbance in straight traveling. CONSTITUTION:A pair of shackles 11, 11 are supported to a frame in front of rear axles 43, 43 so as to be oscillated back and forth. And, a pair of rear leaf springs 12, 12 connect their front ends 21, 21 to the shackles 11, 11 by pins 15, 15 through rubber bushes 17, 17, and their rear ends 22, 22 are connected to the frame by pin joints 13, 13 or ball joints in rear of the rear axles 43, 43, thereby the rear axles 43, 43 are supported to the frame.

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