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Engine start control system

A technology of engine starting and control system, which is applied in the direction of engine control, automatic control of electric engine control, engine starting, etc. It can solve the problems such as difficult to achieve engine assistance, and achieve the effect of realizing fuel economy and prolonging driving time

Active Publication Date: 2016-12-21
SUZUKI MOTOR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the engine start control system described in Patent Document 1, the rotational drive of the engine by the starter generator stops at the start of the engine, making it difficult to assist the engine.

Method used

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Examples

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Embodiment Construction

[0029] Hereinafter, an engine start control system according to the present embodiment will be described with reference to the drawings. In addition, the engine startup control system of this embodiment is not limited to the following structure, It can change suitably. The engine start control system can be applied to any vehicle, and can be applied to, for example, an automatic two-wheel vehicle, a walk-behind automatic three-wheel vehicle, or an automatic four-wheel vehicle.

[0030] First, refer to figure 1 , the schematic structure of a general engine will be described. figure 1 It is a schematic diagram of the engine of this embodiment. like figure 1 As shown, the engine 1 is, for example, a direct-acting DOHC (Double Over Head Camshaft: double overhead camshaft) engine. The engine 1 includes a crankshaft 10 , a cylinder block 11 , a cylinder head 12 , and the like in a crankcase (not shown). Inside the cylinder 11, the piston 13 is housed so as to be able to recipro...

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PUM

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Abstract

The invention provides an engine start control system and a vehicle, which can assist in driving an engine and improving fuel economy. The internal combustion engine start control system (3) includes: an electric motor (20) configured to rotate a crankshaft (10); an electric motor control unit (24) configured to control an output of the electric motor; and an ECU (2) configured to perform a fuel injection control. The electric motor includes a first circuit mode and a second circuit mode whose output torques are different from each other. The electric motor control unit is configured to drive the electric motor by using the first circuit mode until a motor speed reaches a first rotational speed and to drive the electric motor by switching from the first circuit mode to the second circuit mode until the motor rotational speed reaches a second rotational speed which is higher than the first rotational speed when the engine speed exceeds the first rotational speed. The ECU is configured to start the fuel injection control when the engine speed is equal to or higher than a third rotational speed which is higher than the first rotational speed and lower than the second rotational speed.

Description

technical field [0001] The present invention relates to an engine start control system of a vehicle and a vehicle, and more particularly relates to an engine start control system and a vehicle that use an electric motor to assist the start of an engine. Background technique [0002] Conventionally, an engine start control system has been proposed that starts an engine using a starter generator that functions as an electric motor driving the engine and generates electricity using the power of the engine (for example, refer to Patent Document 1). In the engine start control system described in Patent Document 1, the engine is driven to a rotation speed required for engine start by using the driving force of the starter generator. Then, when the rotational speed of the engine increases to a predetermined rotational speed, fuel injection is started to start the engine. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: (Japanese) Unexamined Pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02N11/04F02N11/08F02P5/145F02D43/00
CPCF02N11/04F02N11/08F02P5/045F02P5/145F02N2200/022F02N2300/104F02N11/0814F02D41/00
Inventor 刑部铁也
Owner SUZUKI MOTOR CORP
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