Device for improving diesel engine startup
The integrated heat accumulator in the intake manifold addresses the challenge of maintaining charge air temperature during diesel engine startup in low temperatures, achieving efficient, automated control, and reducing weight and size without design changes.
Patent Information
- Authority / Receiving Office
- RU · RU
- Patent Type
- Patents
- Current Assignee / Owner
- МОНАХОВ ЕВГЕНИЙ ИГОРЕВИЧ
- Filing Date
- 2025-11-07
- Publication Date
- 2026-07-07
AI Technical Summary
Existing diesel engine pre-start preparation systems for weapons and military equipment fail to maintain a consistent charge air temperature during engine startup in low temperatures, are bulky, and lack automated regulation and monitoring.
A heat accumulator integrated into the intake manifold uses a phase-change material that transitions to a liquid state at a lower melting point than the charge air temperature, with a starter to change its phase and release heat, controlled by a solenoid valve and monitored by sensors, maintaining heat for up to 6 hours regardless of compressor wheel speed.
The system maintains consistent charge air temperature during engine startup, reduces weight and size, and enables automated control and monitoring, without significant design modifications.
Smart Images
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Abstract
Description
[0001] The invention relates to heat accumulators intended for use in a system for pre-start thermal preparation of diesel engines of weapons and military equipment (WME), and can be used to reduce the time of pre-start preparation of diesel engines, as well as to increase the efficiency of starting diesel engines of weapons and military equipment of the Ground Forces of the Russian Federation, in particular tanks, in low temperature conditions.
[0002] A piston engine design is known that incorporates a charge air temperature stabilizer containing a phase-change heat-accumulating substance, ensuring a constant air temperature regardless of load. Russian Patent No. RU 52114 U1, F02G 5 / 02, September 26, 2005.
[0003] The disadvantages of this design are: the system operates only when the engine is running, which does not ensure the heating of the fresh air charge during pre-start preparation; the lack of automated regulation of the boost air; significant weight and size characteristics of the temperature stabilizer.
[0004] A device is known that allows for the accumulation of heat while the engine is running through heat exchange between its coolant and a heat-accumulating substance (hereinafter referred to as HAS). RU Patent 2187049 C1, IPC 7 F24H 7 / 00, 10.08.2002.
[0005] However, the specified device has a drawback: it does not provide for maintaining the required coolant temperature over a long period of time when the engine is not running (switched off) in sub-zero temperatures.
[0006] A device is known in which the technical problem is solved by using self-regulating heating elements made of posistor ceramics in a phase-change heat accumulator (hereinafter referred to as PECA) with a self-regulating electric heating device. These elements can operate from an external source or from the vehicle's electrical system when the engine is off. Russian Patent 2506503 C1, F24H 7 / 00, October 24, 2012.
[0007] The disadvantages of this device are: the complexity of the design; the use of additional electrical consumers, which in turn creates an additional load on the batteries when the engine is off; the significant weight and size characteristics of the TAFP.
[0008] The closest technical essence and achievable technical result to the claimed engine is a combined engine with a device for stabilizing the charge air temperature using a heat accumulator. Russian Federation Patent No. RU 54101 U1, F02G 5 / 02, 12 / 12 / 2005.
[0009] The disadvantages of this device include the ability to retain the TAB heat for an extended period. Thus, as the compressor impeller speed decreases, the charge air temperature drops. If it falls below the previously heated TAB temperature, the TAB begins to discharge, heating the charge air. The significant weight and size characteristics of the TAB are due to the presence of a cooling circuit. The ability to control the charge air temperature.
[0010] The technical result of the proposed invention is to ensure the ability to maintain heat in the TAFP for a long time, regardless of the compressor wheel speed, to reduce the weight and size characteristics of the TAFP by integrating it into the intake manifold, as well as automated control of the TAFP and monitoring of the charge air temperature.
[0011] The technical result is achieved by the TAB being designed to transition to a liquid state at a melting point lower than the charge air temperature during engine operation in operating modes, as well as by the presence of a starter capable of changing the phase state of the heat-accumulating substance, releasing heat and warming the intake manifold. The TAB is controlled and monitored from a control panel.
[0012] The invention is illustrated by a drawing showing a device for improving the starting of a diesel engine (Fig. 2). The device is mounted in a standard location without changing the overall design (Fig. 1).
[0013] The proposed invention (Fig. 3) consists of: an intake manifold
[0014] (1), comprising a sealed hollow wall (7) which is secured by welding; a thermal compensator with a cover (6) installed on the outer wall (7) by welding; a heat-accumulating substance (TAB) (8); a solenoid valve (4) installed in the outer wall (7) by a threaded connection; a rod (3); a starter (5); temperature sensors
[0015] (2), transmitting an electrical signal to the control panel (9) (Fig. 4), connected to the on-board network, having an indicator panel of the right (10) and left (11) manifolds for monitoring the temperature of the supercharged air, and a switch (12);
[0016] The diesel engine starting improvement device operates as follows.
[0017] The driver presses a switch on the control panel, thereby activating the solenoid valve. The solenoid valve's rod acts on the actuator. The actuator, in turn, disturbs the equilibrium of the heat-storing substance (HSS), which changes its phase from liquid to solid, releasing heat and simultaneously warming the intake manifolds. The air temperature in the manifolds is monitored on the control panel's display.
[0018] The transition of TAB back to a liquid state will occur during engine operation, since the melting point of TAB is lower than the temperature of the charge air when the engine is operating under operating conditions.
[0019] TAFP, when charged, provides the ability to retain heat for up to 6 hours, depending on the ambient temperature and regardless of the compressor wheel speed.
[0020] It is noted that the use of this device does not require significant design modifications. Therefore, it is proposed to retrofit the proposed device to production weapons and military equipment.
Claims
A device for improving the starting of a diesel engine, comprising an intake manifold, a heat-accumulating substance, a heat compensator with a cover, temperature sensors, characterized in that the wall of the intake manifold is made hollow and filled with a heat-accumulating substance, the intake manifold contains an electromagnetic valve with a rod acting on a starter, which is configured to change the phase state of the heat-accumulating substance with the release of heat and simultaneous heating of the intake manifold, the temperature sensors are configured to transmit an electrical signal to a control panel for monitoring the temperature of the charge air, the electromagnetic valve is connected by an electrical circuit to a switch, which is configured to actuate the electromagnetic valve.