Abstract: Particular embodiments may provide a piston for a prechamber-type gas engine and a prechamber-type gas engine taking into consideration the shape of the piston top surface portion so that the region where flame propagation due to torch jet is delayed, a piston for a prechamber-type gas engine where torch jet formed by combustion a prechamber fuel in a precombustion chamber is injected to a main combustion chamber through a plurality of injection holes, may include a piston top surface portion comprising a land portion formed in a first region extending between axis line directions of adjacent injection holes, and the first region is positioned at a higher position than a second region extending across the axis line direction. The land portion may be formed on a cavity formed in the piston top surface portion.

Abstract: A wheel loader includes an engine, an engine compartment, an injection device, a top plate and a first guide member. The injection device is disposed in the engine compartment. The top plate has a ventilation part. The ventilation part is disposed in a position horizontally away from the injection device. The first guide member has a guide body. The guide body is disposed along the top plate to direct air existing over the injection device to the ventilation part.

Abstract: It is an object of the present invention to improve estimation accuracy of an air excess ratio within a fuel spray and quickly cause the air excess ratio to approximate to a target value when the engine load factor rises. An internal combustion engine control apparatus includes a parameter acquiring section to acquire an air intake parameter and a fuel parameter, a first estimation section to estimate an in-fuel-spray air excess ratio using the air intake parameter and fuel parameter, and a pressure calculation section to calculate, if the in-fuel-spray air excess ratio is less than a target in-fuel-spray air excess ratio, a necessary fuel injection pressure to match the in-fuel-spray air excess ratio with the target in-fuel-spray air excess ratio, in which if the necessary fuel injection pressure is equal to or less than a maximum injection pressure, fuel injection is to be performed at the necessary fuel injection pressure.

Abstract: A vehicle body cover of a work vehicle is provided with an outside ventilation cover part and an inside ventilation cover part. The outside ventilation cover part has outside ventilation holes that communicate with an external space. The outside ventilation cover part is disposed in an inclined manner with respect to the vertical direction. The inside ventilation cover part is disposed to face the outside ventilation holes on the inside of the outside ventilation cover part. The inside ventilation cover part has a rain gutter part and a ventilation part. The rain gutter part is configured to receive water entering from the outside ventilation holes. The ventilation part has inside ventilation holes that communicate with a space on the inside of the inside ventilation cover part. The ventilation part is disposed above the rain gutter part.

Abstract: Particular embodiments may provide a piston for a prechamber-type gas engine and a prechamber-type gas engine taking into consideration the shape of the piston top surface portion so that the region where flame propagation due to torch jet is delayed, a piston for a prechamber-type gas engine where torch jet formed by combustion a prechamber fuel in a precombustion chamber is injected to a main combustion chamber through a plurality of injection holes, may include a piston top surface portion comprising a land portion formed in a first region extending between axis line directions of adjacent injection holes, and the first region is positioned at a higher position than a second region extending across the axis line direction. The land portion may be formed on a cavity formed in the piston top surface portion.

Abstract: A vehicle body cover of a work vehicle is provided with an outside ventilation cover part and an inside ventilation cover part. The outside ventilation cover part has outside ventilation holes that communicate with an external space. The outside ventilation cover part is disposed in an inclined manner with respect to the vertical direction. The inside ventilation cover part is disposed to face the outside ventilation holes on the inside of the outside ventilation cover part. The inside ventilation cover part has a rain gutter part and a ventilation part. The rain gutter part is configured to receive water entering from the outside ventilation holes. The ventilation part has inside ventilation holes that communicate with a space on the inside of the inside ventilation cover part. The ventilation part is disposed above the rain gutter part.

Abstract: A wheel loader includes an engine, an engine compartment, an injection device, a top plate and a first guide member. The injection device is disposed in the engine compartment. The top plate has a ventilation part. The ventilation part is disposed in a position horizontally away from the injection device. The first guide member has a guide body. The guide body is disposed along the top plate to direct air existing over the injection device to the ventilation part.

Abstract: It is an object of the present invention to improve estimation accuracy of an air excess ratio within a fuel spray and quickly cause the air excess ratio to approximate to a target value when the engine load factor rises. An internal combustion engine control apparatus includes a parameter acquiring section to acquire an air intake parameter and a fuel parameter, a first estimation section to estimate an in-fuel-spray air excess ratio using the air intake parameter and fuel parameter, and a pressure calculation section to calculate, if the in-fuel-spray air excess ratio is less than a target in-fuel-spray air excess ratio, a necessary fuel injection pressure to match the in-fuel-spray air excess ratio with the target in-fuel-spray air excess ratio, in which if the necessary fuel injection pressure is equal to or less than a maximum injection pressure, fuel injection is to be performed at the necessary fuel injection pressure.

Abstract: The contents of a small image displayed on the back side can be made easy to understand. A layout managing portion outputs display area information indicating display areas of respective small images displayed on the small image list, and arrangement information of respective small images displayed on the small image list. An image zooming portion produces a zoom image by zooming in or out an image of a main area of an original image extracted by a main area extracting portion in response to an area of the display area being output from the layout managing portion produces the small images displayed on the small image list by expanding or contracting the produced zoom image. An image layout designing portion produces the small image list by arranging respective generated small images at predetermined locations of the small image list, based on arrangement information output from the layout managing portion.

Abstract: The contents of a small image displayed on the back side can be made easy to understand. A layout managing portion 14 outputs display area information indicating display areas of respective small images displayed on the small image list, and arrangement information of respective small images displayed on the small image list. An image zooming portion 13 produces a zoom image by zooming in or out an image of a main area of an original image extracted by a main area extracting portion in response to an area of the display area being output from the layout managing portion 14, and produces the small images displayed on the small image list by expanding or contracting the produced zoom image. An image layout designing portion 16 produces the small image list by arranging respective generated small images at predetermined locations of the small image list, based on arrangement information output from the layout managing portion 14.

Abstract: An airbag system includes at least an airbag and a gas supply device. The airbag is mounted to an upper part of a sidewall of a vehicle and has a function of protecting an occupant by inflating downwardly into an occupant protection region between the occupant and the sidewall of the vehicle in a car accident such as a side crash or rolling sideways. The gas supply device having a gas generating function supplies inflation gas to the airbag. The airbag has a folded portion and an extending portion. The folded portion is folded in a predetermined folded shape in advance. The extending portion extends downwardly along the folded portion so as to cover a side of the folded portion from an interior side of the vehicle when the airbag is mounted to the vehicle.

Abstract: An airbag apparatus includes an airbag to be deployed and inflated in a passenger protection area between a vehicle passenger and a vehicle side wall portion in case of vehicle accident. The airbag has a head chamber for protecting a head of a vehicle passenger and a chest chamber for protecting a chest portion of the passenger. A gas supply device is provided for simultaneously supplying gas to the head chamber and the chest chamber. A pressure adjusting device adjusts an internal pressure of the head chamber to a level higher than an internal pressure of the chest chamber at the time of deployment and inflation of the airbag.

Abstract: An airbag apparatus includes an airbag to be deployed and inflated in a passenger protection area between a vehicle passenger and a vehicle side wall portion in case of vehicle accident. The airbag has a head chamber for protecting a head of a vehicle passenger and a chest chamber for protecting a chest portion of the passenger. A gas supply device is provided for simultaneously supplying gas to the head chamber and the chest chamber. A pressure adjusting device adjusts an internal pressure of the head chamber to a level higher than an internal pressure of the chest chamber at the time of deployment and inflation of the airbag.

Abstract: In order to provide an airbag apparatus which can ensure protection of head and chest regions of a vehicle passenger in case of vehicle accident, the airbag apparatus includes head and chest chambers. The thickness of the head chamber in a deployed and inflated airbag in the lateral direction becomes larger than the thickness of the chest chamber in the lateral direction.

Abstract: An airbag system includes at least an airbag and a gas supply device. The airbag is mounted to an upper part of a sidewall of a vehicle and has a function of protecting an occupant by inflating downwardly into an occupant protection region between the occupant and the sidewall of the vehicle in a car accident such as a side crash or rolling sideways. The gas supply device having a gas generating function supplies inflation gas to the airbag. The airbag has a folded portion and an extending portion. The folded portion is folded in a predetermined folded shape in advance. The extending portion extends downwardly along the folded portion so as to cover a side of the folded portion from an interior side of the vehicle when the airbag is mounted to the vehicle.