US 2014/0137702 A1 · VEHICLE CONTROL SYSTEM

Abstract

A vehicle control system (100) includes a rotary electric machine unit (40), a PCU (14) including an inverter circuit, and a controller (18). The rotary electric machine unit (40) includes a casing defining an interior space and containing a rotary electric machine and a lubricating cooling fluid disposed therein and a cover, and a breather (70) which is connected to the interior space via an on-off valve (58). The on-off valve (58) is normally in an open state. The controller (18) outputs a valve-closing signal to the on-off valve (58) when a single phase short circuit fault occurs in the inverter circuit which drives the rotary electric machine. A mechanical mechanism can also be used to place the on-off valve (58) into a closed state.

Claims6

Dependent claims

A vehicle control system, comprising:

a rotary electric machine which is mounted in a vehicle and contains a lubricating cooling fluid therein;
a breather which is provided on a casing for the rotary electric machine, the breather preventing leakage of the lubricating cooling fluid and allowing gas communication with the outside;
an on-off valve which is provided in a connection portion connecting the casing for the rotary electric machine with the breather, the on-off valve normally being in an open state;
and
a valve-closing unit which places the on-off valve into a closed state mechanically or based on an electrical signal satisfying a predetermined condition associated with the generation of white smoke due to overheating of the lubricating cooling fluid.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/087,636Filed 22 Nov 2013

Priority

25 Jul 2012

Published

22 May 2014

Term ends

Not estimatedThe source records don’t support an estimate.

Classification34 codes

B60W 10/10
Conjoint control of vehicle sub-units of different type or different function: including control of change-speed gearings
B60L 3/003
Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train: relating to inverters
B60L 3/0038
Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train: relating to sensors
B60L 3/0061
Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train: relating to electrical machines

Vehicle control system

Life of this patent

Vehicle control system

Life of this patent

Abstract

Claims6