Abstract: An information collection system includes: a vehicle registration information acquisition unit configured to access a vehicle registration DB, and acquire vehicle registration information including an identification code and a vehicle model of the vehicles; a communication control unit configured to communicate with the vehicles; a required number setting unit configured to set a number of the vehicles required when acquiring vehicle use information of the vehicles of a specified vehicle model based on a predetermined information acquisition condition; an information acquisition target vehicle extraction unit configured to extract the required number of the vehicles from the vehicles of the specified vehicle model registered in the vehicle registration DB; and a vehicle use information acquisition unit configured to transmit vehicle use information transmission request information requesting transmission of the vehicle use information to the vehicles extracted by the information acquisition target vehicle ext

Abstract: A second management device coupled to a device includes: a local communication IF communicating with the device; a second storage storing a device list in which the device that the local communication IF can communicate with is registered; and a second device management unit acquiring device information from the device registered in the device list. The second device management unit generates the device list and causes the second storage to store the device list, when the second management device shifts from a first state to a second state.

Abstract: An internal combustion engine 1 at a standstill of a vehicle after cold starting can switch its combustion mode to a homogenous combustion mode or a stratified combustion mode. An operation range of the stratified combustion at the standstill of the vehicle after cold starting is expanded relative to an operation range of the homogenous combustion at the standstill of the vehicle after cold starting as an inclination of the vehicle decreases. With this technique, the operation range of the stratified combustion can be expanded while assuring an intake air negative pressure required for achieving the brake performance, so that HC reduction at the standstill of the vehicle after cold starting is obtained.

Abstract: An internal combustion engine 1 at a standstill of a vehicle after cold starting can switch its combustion mode to a homogenous combustion mode or a stratified combustion mode. An operation range of the stratified combustion at the standstill of the vehicle after cold starting is expanded relative to an operation range of the homogenous combustion at the standstill of the vehicle after cold starting as an inclination of the vehicle decreases. With this technique, the operation range of the stratified combustion can be expanded while assuring an intake air negative pressure required for achieving the brake performance, so that HC reduction at the standstill of the vehicle after cold starting is obtained.