An engine control and input system for a device having a tool driven by an engine, includes an input and control module having one or more inputs and a controller responsive to actuation of the inputs to permit user control of at least one engine operating parameter by user actuation of the inputs. The system may include a touch screen display that displays icons to the user relating to the inputs and the at least one engine operating parameter, and wherein the touch screen display is responsive to the user selecting one of the inputs by touching an associated one of the icons provided by the display. At least one of the inputs may relate to one or more of changing engine speed, starting the engine, causing the engine to drive the tool, turning on a light, actuating a heater or warmer or stopping engine operation.

An engine control and input system for a device having a tool driven by an engine, includes an input and control module having one or more inputs and a controller responsive to actuation of the inputs to permit user control of at least one engine operating parameter by user actuation of the inputs. The system may include a touch screen display that displays icons to the user relating to the inputs and the at least one engine operating parameter, and wherein the touch screen display is responsive to the user selecting one of the inputs by touching an associated one of the icons provided by the display. At least one of the inputs may relate to one or more of changing engine speed, starting the engine, causing the engine to drive the tool, turning on a light, actuating a heater or warmer or stopping engine operation.

Methods and systems are provided for optimizing engine climate control performance and fuel economy in engines configured with start/stop capabilities. Climate control inhibits of start/stop actions are adjusted as a function of operator driving habits and climate control inputs and preferences. The approach enables climate performance to be improved while also allowing for frequent idle-stop operation.

A control device of a general-purpose engine which can continue operation of a working machine even when an operation management unit of the working machine has failed. The control device includes an engine control unit that controls the general-purpose engine based on a command from the operation management unit managing an operating state of the working machine, a communication interface for communicating with an external device; a management program acquisition unit that acquires a management program that is used by the operation management unit to manage the operating state, from the external device through the communication interface and stores the acquired management program in a storage medium, and an operation management substitute unit that manages the operating state of the working machine in place of the operation management unit in accordance with the management program when a failure of operation management unit is detected.

A control device of a general-purpose engine which can continue operation of a working machine even when an operation management unit of the working machine has failed. The control device includes an engine control unit that controls the general-purpose engine based on a command from the operation management unit managing an operating state of the working machine, a communication interface for communicating with an external device; a management program acquisition unit that acquires a management program that is used by the operation management unit to manage the operating state, from the external device through the communication interface and stores the acquired management program in a storage medium, and an operation management substitute unit that manages the operating state of the working machine in place of the operation management unit in accordance with the management program when a failure of operation management unit is detected.

A working machine includes a prime mover, a hydraulic pump to be driven by power of the prime mover to output operation fluid, a hydraulic actuator to be actuated by the operation fluid outputted from the hydraulic pump, a first setting member to accept selection of a set revolving speed of the prime mover, a second setting member to accept selection of a set speed of the hydraulic actuator, a revolving speed controller portion to control operation of the prime mover based on the set revolving speed, and a speed controller portion to control operation of the hydraulic actuator based on the set speed. The speed controller portion being configured to change an operation speed of the hydraulic actuator in accordance with the set revolving speed accepted by the first setting member, the operation speed of the hydraulic actuator corresponding to the set speed accepted by the second setting member.

Provide is a loading vehicle capable of quickly operating an object handling device in the upward direction while traveling forward. A wheel loader 1 comprises an engine 3, an HST pump 41, an HST motor 42, a forward/reverse changeover switch 62, a step-on amount sensor 610, a pressure sensor 73, and a controller 5. In a case where a specific condition for specifying lifting operation of a lift arm 21 during forward traveling of the vehicle body is satisfied, the controller 5 increases maximum rotational speed of the engine to a predetermined value Nmax2 which is greater than maximum engine rotational speed Nmax1 during traveling on the flat ground, and limit maximum vehicle speed to a predetermined value Vmax2 which is smaller than maximum vehicle speed Vmax1 prior to the lifting operation of the lift arm 2.

Provide is a loading vehicle capable of quickly operating an object handling device in the upward direction while traveling forward. A wheel loader 1 comprises an engine 3, an HST pump 41, an HST motor 42, a forward/reverse changeover switch 62, a step-on amount sensor 610, a pressure sensor 73, and a controller 5. In a case where a specific condition for specifying lifting operation of a lift arm 21 during forward traveling of the vehicle body is satisfied, the controller 5 increases maximum rotational speed of the engine to a predetermined value Nmax2 which is greater than maximum engine rotational speed Nmax1 during traveling on the flat ground, and limit maximum vehicle speed to a predetermined value Vmax2 which is smaller than maximum vehicle speed Vmax1 prior to the lifting operation of the lift arm 2.

A power transmission control device includes a first rotation shaft, a first power source to adjust rotation speed of the first rotation shaft, a second rotation shaft interlocked with an axle, a first switching mechanism to connect/disconnect switching between the first and second rotation shafts, a third rotation shaft, a second power source to adjust rotation speed of the third rotation shaft, and a second switching mechanism to connect/disconnect switching between the third rotation shaft and the second rotation shaft. At least one switching mechanism of the first switching mechanism and the second switching mechanism is a dog clutch type, and reliably and stably performs the connection switching thereof. A control stores information on a rotation phase of the first/third rotation shafts. At least one of the first/second switching mechanisms is held in a connected state, and the rotation phase is adjusted based on stored information at the connection switching.

An abnormality diagnostic method is provided for a driving force control system in which an automatic transmission is interposed between an engine and a drive wheel, and a target driving force that is transmitted to the drive wheel is calculated based on a driver's output request. The automatic transmission and the engine are controlled based on the target driving force. The abnormality diagnostic method includes calculating a target engine torque based on the target driving force, detecting an actual engine torque of the engine, and detecting an intake temperature of the engine. Upon determining the automatic transmission has been operating normally, abnormality diagnostic method determines an abnormality of the driving force control system exists that is caused by the engine upon determining a difference between the target engine torque and the actual engine torque has exceeded a predetermined threshold value.