发明名称 |
METHOD AND SYSTEM FOR CONTROLLING BRAKE PRESSURE UNDER LOW MU BRAKING SURFACE CONDITIONS IN A VEHICULAR ABS |
摘要 |
Method and system for reducing the brake pressure rise rate under low Mu braking surface conditions by utilizing a vehicle reference speed and a fixed bleed rate to determine if the wheels are being over-braked. When over-braking occurs, the pressure rise rate is restricted by not allowing an ABS valve (10) to go into an Apply state (approximately 100 psi/sec.), regardless of wheel acceleration levels. A Ramp state is used in place of the Apply state and the pressure rise is therefore limited to approximately 30 psi/sec. to improve wheel control. The Ramp duty cycle is also modified to provide the smallest pressure steps possible with the current valve hardware.
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申请公布号 |
CA2094956(C) |
申请公布日期 |
1999.04.06 |
申请号 |
CA19932094956 |
申请日期 |
1993.04.27 |
申请人 |
EATON CORPORATION |
发明人 |
YOUNGBLOOD, RICHARD JOSEPH |
分类号 |
B60T8/66;B60T8/172;B60T8/1763;B60T8/64;(IPC1-7):B60T8/50 |
主分类号 |
B60T8/66 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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