Control apparatus for four-wheel drive vehicle

A power transmission device for a four-wheel drive vehicle that includes a power source,

• the power transmission device comprising:
• a first output shaft;
• a second output shaft;
• an input shaft configured to transmit a power of the power source;
• a power distribution mechanism configured to distribute the power between the first output shaft and the second output shaft;
• a rear propeller shaft connected to the first output shaft;
• a front propeller shaft connected to the second output shaft;
• and
• a casing that houses the input shaft, the first output shaft, the second output shaft and the power distribution mechanism,
• wherein the input shaft, the first output shaft, the second output shaft, the rear propeller shaft and the front propeller shaft have axes that extend in a longitudinal direction of the vehicle,
• wherein the casing includes front-side and rear-side walls that are opposite to each other in the longitudinal direction of the vehicle,
• wherein the casing has an input opening which is provided in the front-side wall of the casing, such that the input shaft extends through the input opening,
• wherein the casing has a first opening which is provided in the rear-side wall of the casing, such that the first output shaft extends through the first opening,
• wherein the casing has a second opening which is provided in the front-side wall of the casing and which is other than the input opening, such that the second output shaft extends through the second opening,
• wherein the power transmission device further comprises a transmission mechanism which is provided in a power transmission path between the power distribution mechanism and the second output shaft such that the power is to be transmitted through a power transmission position between the power distribution mechanism and the transmission mechanism, and
• wherein the transmission mechanism is disposed on an axis parallel to the axes, such that the transmission mechanism extends from the power transmission position toward a front side of the vehicle in the longitudinal direction of the vehicle.