US 2024/0384692 A1 · ENGINE CONTROL DEVICE AND ENGINE DEVICE

Abstract

Provided is an engine control device and an engine device that enable stable self-travelling of the engine in a limp home mode. The engine control device includes a revolution speed detection unit that detects revolution speed of the engine, and an arithmetic unit that calculates an opening of a throttle valve opened by an electronic throttle mechanism, and an injection amount of fuel injected by injectors. In an operation of the engine in the limp home mode, in a case where the revolution speed of the engine detected by the revolution speed detection unit exceeds a predetermined limiting value, the arithmetic unit performs an operation to suppress injection of the fuel to be injected by the injectors.

Claims10

Dependent claims

An engine control device to control an engine equipped with an electronic throttle mechanism and a fuel injection mechanism, comprising:

a revolution speed detection unit that detects revolution speed of the engine;
and
an arithmetic unit that calculates an opening of a throttle valve opened by the electronic throttle mechanism, and an injection amount of fuel injected by the fuel injection mechanism, wherein
in an operation of the engine in a limp home mode, in a case where the revolution speed of the engine detected by the revolution speed detection unit exceeds a predetermined limiting value, the arithmetic unit performs an operation to suppress injection of the fuel to be injected by the fuel injection mechanism.

1 more element

An engine device, comprising an engine control device to control an electronic throttle mechanism and a fuel injection mechanism, and a driving mechanism that is driven by output of an engine, wherein

the driving mechanism includes
a clutch that is installed in a subsequent stage of the engine, and
a transmission unit that is installed in a subsequent stage of the clutch and includes a driving gear to transmit output of the engine, wherein
the engine control device includes
a revolution speed detection unit that detects revolution speed of the engine, and
an arithmetic unit that calculates an opening of a throttle value opened by the electronic throttle mechanism, and an injection amount of fuel injected by the fuel injection mechanism, wherein
in an operation of the engine in a limp home mode, in a case where the revolution speed of the engine detected by the revolution speed detection unit exceeds a predetermined limiting value, the arithmetic unit performs an operation to suppress injection of the fuel to be injected by the fuel injection mechanism.

4 more elements

Dependencies are inferred from the claim text.

Engine control device and engine device

Life of this patent

Engine control device and engine device

Life of this patent

Abstract

Claims10