Abstract: A signal forwarding system includes: a plurality of signal forwarding devices forming a plurality of communication routes between a slave station and a master station; and a route control device that determines a communication route, wherein the route control device includes at least: a communication route calculation unit that calculates a communication route in response to a route switching request; and a forward destination setting instruction unit that outputs forward destination setting information based on the communication route, the signal forwarding devices include at least: a forward destination setting instruction acquisition unit that acquires the forward destination setting information; a forward destination set unit that changes a forward destination based on the forward destination setting information; and a forward unit that outputs input traffic based on the forward destination, and any of the route control device and the signal forwarding devices includes: a traffic monitor unit; a non-signa

Abstract: An intake system distributes air into cylinders of an internal combustion engine, which are divided into two groups. The cylinders in each group are arranged in the same row so that adjoining cylinders in each row do not fire one after another. An intake passage is formed with an upstream passage and two separate downstream passages, extending from the upstream passage, which are connected to the two groups of cylinders. The upstream passage is divided by a partition wall into two separate upstream passages in communication with the two separate downstream passages, respectively. A throttle valve is disposed adjacent to the intake passage so as to extend a path of each separate upstream passage when the throttle valve is in its full throttle position.

Abstract: An intake system delivers air into cylinders of an internal combustion engine which are divided into two groups. The cylinders in each group are arranged in one and the same row so that adjoining cylinders in each row do not fire one after another. The intake system has conflux chambers for the cylinder rows, connected to the cylinders by intake passages, and also interconnected to each other by a communication passage having a valve. First and second resonant passages are each connected at one end to the respective conflux chambers and are joined together to communicate with each other at another end, opposite to the one end, in a location at which a throttle body is located. The first resonant passage has a connection point with one conflux chamber closer to an interconnection between both the conflux chambers than a connection point in a lengthwise direction of the second resonant passage with another conflux chamber.

Abstract: A structure for mounting an air cleaner in an engine compartment. The air cleaner is supported on an engine and a transmission having different vibration frequencies. Therefore, the frequency of an applied vibration force does not coincide with the natural frequency of the air cleaner, with the result that resonance of the air cleaner is prevented and reliability of the air cleaner is improved.

Abstract: An intake system for a V-type engine having a plurality of cylinders disposed in each of left and right cylinder banks has a central surge tank which is disposed above the space between the left and right cylinder banks and communicates with the atmosphere through a common intake passage, and left and right surge tanks which are respectively disposed above the left and right cylinder banks. Communicating passages connect the central surge tank with the left and right surge tanks, and discrete intake passages communicate the left and right surge tanks with the cylinders. At least one of the communicating passages on each side of the central surge tank is disposed between the discrete intake passages on the side of the central surge tank.