VEHICULAR HEAT MANAGEMENT SYSTEM

摘要

A vehicular heat management system is described and includes: a heater configured to carry out heating of a heat medium and stop the heating, and a heat exchanger configured to carry out heat exchange between lubricant oil for lubricating a speed change apparatus and the heat medium. A heat medium circulator is provided that is configured to switch the heat medium circulation state between a first circulation state where the heat medium circulates through the heater and the heat exchanger, and a second circulation state where the heat medium circulates through the heater and a heater core. An electronic control unit is also provided. When a pre-operation warm-up request to warm up the speed change apparatus and a pre-operation heating request to heat a vehicle cabin are both issued, the electronic control unit causes the heat medium circulator to switch the circulation state such that a warm-up of the speed change apparatus is carried out before heating of a vehicle cabin.

主权项

1. A vehicular heat management system comprising:
a speed change apparatus lubricated with lubricant oil; an air-conditioner including a heater core, the air-conditioner configured to heat a vehicle cabin of a vehicle by using the heater core as a heat source; a heater configured to carry out heating of a heat medium and to stop said heating; a heat exchanger configured to carry out heat exchange between the lubricant oil and the heat medium; a heat medium circulator configured to switch a circulation state of the heat medium between a first circulation state where the heat medium is circulated through the heater and the heat exchanger, and a second circulation state where the heat medium is circulated through the heater and the heater core; and an electronic control unit configured to: i) warm up the speed change apparatus by heating the lubricant oil in response to a pre-operation warm-up request, before an operation of the vehicle; ii) heat the vehicle cabin in response to a pre-operation heating request, before the operation of the vehicle; and iii) execute a first operation and a second operation after there are both the pre-operation warm-up request and the pre-operation heating request are issued,
the first operation being an operation in which the lubricant oil is heated to a prescribed oil temperature by the heat exchanger in the first circulation state while the heat medium is heated by the heater, andthe second operation being an operation in which the circulation state is switched from the first circulation state to the second circulation state after the lubricant oil reaches the prescribed oil temperature, and heating of the heat medium by the heater is stopped until a vehicle cabin temperature of the vehicle cabin reaches a prescribed cabin temperature.